FITNESS PAGE
revised:2/17/10
email-schutzgymnastics@gmail.com
FOOTBIKING
moved to new page at:
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www.schutzgymnastics.com/FOOTBIKING.htm
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Soon the ice will melt, flowers will bloom, the mountains will all turn green again, and spring will arrive. Back to rollerskiing, paddling, footbiking and all warm weather things
The purpose of this section is to serve as an information resource about some lesser known fitness activities, sports, and methods of fitness training. There is also information pertaining to health, wellness, weight management issues and related research.
Consultation about any of these topics is free, in the interest of helping you pursue an active lifestyle that you can enjoy. Speak to us directly, or email us at: schutzgymnastics@gmail.com
If we provide you with a list of manufacturers, or sellers of equipment, we have no personal or financial interest in doing so, unless stated otherwise. We may review and offer our opinions based on our personal experience. We accept no responsibility for any manufacturer’s claims, inaccuracies or quality of products offered. We do not offer medical advice.
PERSONAL TRAINING CONSULT
: We offer a free consult for personal training. This would include a discussion regarding assessment of your present level of fitness, goals, and suggested guidelines for implementation of a fitness/wellness program.Depending on the interest in a particular facet of training or topic, we may offer a clinic or demo for small or large groups.
CONTENTS: (Scroll down for each article)
I. ACTIVITIES & SPORTS
# 1a Footbiking and Mountain Scootering
# 1b The Footbike from footbikeusa
# 2 Rollerskiing/cross-country skiing/Nordic walking
# 3 Rope Gymnastics (Allunaariaqattaarneq) Inuit Rope Gymnastics, Qajaasaarneq, Greenland Rope Gymnastics
# 4 Stand up Paddling SUP
# 5 Kicksledding
II. OVERVIEW OF FUNDAMENTAL WEIGHT MANAGEMENT CONCEPTS
updated 1/15/10III. DEVELOPING A BASIC PROGRESSIVE RESISTANCE EXERCISE PROGRAM
updated 1/15/10IV. MAINTAINING BONE DENSITY
New 2/5/10V. HEART RATE AND EXERCISE INTENSITY. GENERAL APPLICATIONS FOR ENDURANCE TRAINING. New 3/9/10
RESOURCE ARTICLES/LINKS
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I. ACTIVITIES & SPORTS
#1a FOOTBIKING AND MOUNTAIN SCOOTERING: (main footbike page moved to: www.schutzgymnastics.com/FOOTBIKING.htm
Looking for a variation in aerobic training coupled with fun similar to a downhill snowboard or mountain bike run? Try mountain scootering, or a street version of footbiking.
If you would like to find out more check out the websites below, and check our footbinking page. Email or talk to Bob to find out how you might incorporate footbiking into your personal fitness program.
Some reasons why you might want to consider footbiking:
Cross training on a footbike offers you one of the largest ranges of motions in the hip joint of any land endurance sport. If you are a runner you can still work on endurance while avoiding daily impact from running. Consider it low impact running; train on a footbike while a slower training partner rides a bike; train on a footbike while a faster runner jogs or runs; take the impact out of downhill running after an uphill run, walk, or jog; dog scootering is an adventure sport and a great way let your dog get a fast run; lightweight and low maintenance, no chains or gears.
Check out this link about the international scene: http://www.iksaworld.com/welcome.html
Other links: www.footbikeusa.com , www.mountainscooter.com , www.kickbike.com
#1b THE FOOTBIKE:
from footbikeusa (main footbike page moved to: www.schutzgymnastics.com/FOOTBIKING.htmFootbiking has been a major part of my fitness training for nearly 10 years, mostly off-road. In the spring of 2009, I bought a Footbike Street by footbikeusa and started using it exclusively for on road training.
The Street model has fenders, which keep the road juice off; you know the stuff of animal origin that sprays in your face when riding on wet pavement. The footboard is wide enough for my size 12s, and I haven’t missed a jump switch yet, knock on wood. The weight and size makes it easy for a one arm lift to the high bike rack on my truck, and placed upside down with a little ingenuity, it will fit on any bike rack, and inside many trunks without disassembly.
One great part of the Footbike’s design is that you can swap out most of components with standard available bike parts. Want a full suspension fork? Have you got a second mountain bike? If you are mechanically inclined, just switch the fork to the Footbike.
I also ride the Track, which has a lighter aluminum frame, and is their racing model.
I had been so impressed with the quality of the product and the satisfaction with the experience, that when I was offered opportunity to be a dealer representative for footbikeusa, I gladly accepted.
I am currently on their racing team, and I am a dealer rep for NJ, NY, and Pa.
We have the Track and Street models at the gym for you to try out. Check out our FOOTBIKING page for more detailed information.
#2 ROLLERSKIING/CROSS-COUNTRY SKIING/NORDIC WALKING
These three disciplines are closely related bipedal locomotor families, in that they utilize the arms to in effect make us more quadrupedal.
By using the arm and upper body musculature to assist in propulsion, we bring into use a higher muscular mass which may enable us vary and redistribute the load, more or less, to the upper body or lower body, as we choose. This shifting of the peripheral burden may help us to mentally maintain intensity easier with lower perceived exertion.
Nordic skiing is considered by many to require the highest maximal oxygen uptake of any endurance sport. This does not mean that the VO2max of runners or cyclists is lower; in fact the top VO2 max in all three of these sports is nearly the same. They all have a big engine, the heart. How you connect it to the power train, and the kind of power train, is what is different and what it is designed for or trained for in our case.
Using the upper body, as in Nordic skiing, requires a high degree of what is called cardiovascular conductance. This essentially means the circulatory system has to balance the blood flow from one area of the body to redistribute it to another depending on the muscular requirements needed, and to maintain blood pressure in the system.
Did you ever live in a house with small diameter pipes, where if someone flushes the toilet and runs the washer, the flow of water to your shower is disrupted? Depending on where the water is needed we can partially close some of the faucets. In our body that might be somewhat analogous cardiovascular conductance.
Using all limbs challenges this ability, our heart pump and the necessary adjustments to maintain blood pressure. This ability is trainable.
To find out how you might incorporate this family of fun tools into your fitness program, contact me call/email.
I have ski equipment, rollerskis both on-road and off-road, and poles for you to try out.
You can do online searches for rollerskis, and Nordic skiing/ cross-country skiing. There are a variety of programs using poles. Look into: exerstriding, pole walking, and Nordic walking. Each of these varies their approach slightly.
Locally we have a great opportunity for Nordic skiing on groomed trails at the High Point Cross Country Ski Center. http://xcskihighpoint.com/
#3 ROPE GYMNASTICS: Allunaariaqattaarneq, Inuit rope gymnastics. Qajaasaarneq( means rolling like a kayak) Greenaland Rope Gymnastics
Would you like to include some rope gymnastics into your fitness program, especially if you kayak? We can show you some of the exercises that the Inuit people have developed and used for generations, in preparation for the physical demands of kayaking and a physically demanding way of life. We can provide you with demonstrations of the various techniques, and provide you with resources with detailed information and how to set up your own backyard rope system.
Students in our regular classes have the opportunity to practice these skills, where they refer to it as Qajaasaarneq, which means rolling like a kayak.
You can check out some of the exercises on Dubside.net.
#4 STAND UP PADDLEBOARDING:
Looking for a great core workout? Try stand up paddle boarding. What is it? You may have seen someone paddling on a lake, in the ocean just out past the breakers, or maybe surfing the waves on a surfboard with a paddle.
Stand up paddling (SUP), from its genesis, primarily in Hawaii, has swept across the USA, from the west coast, to the east coast, to become what many consider to be the largest growing water sport.
SUP requires the paddler to use a paddle length about 6-8" over your head and stand astride the board at a spot that allows the board to plane in the water. This is different than the classic front to back surfer’s stance. If you choose to surf with it, once in the wave you will switch to the surfer’s stance, and use the paddle as necessary to help steer and keep the board in the wave.
I believe the greatest growth of the sport is in the direction of flat-water SUP. SUP surfing has a significant extended learning curve, compared to flat-water, if you have never surfed.
If you can stand on one foot and twist left and right a few times and move from a kneeling position, to all fours, to a stand, with a kitchen broom in your hand, I believe in a few minutes you can begin to SUP in flat-water. That is not to say you will be a master. Be ready to get wet, and maybe a few bruises bouncing off the board, but the thrill of balancing on the board, propelling yourself across the water, with a view of so much more than you can see sitting down.
The equipment. It is a bit pricey. You are looking at about $800-$1500 for a board, a cheap paddle, $80-$300+ or so for a state of the art carbon fiber one. There are also a number of inflatables coming on the market, which appear to be great to travel with.
After the initial equipment you are set and ready to go!
The boards and paddles have different designs based on what the performance expectations are. Boards are commonly 10’ to over 14’, and 26" or so to 34" wide. Paddles can have different blade shapes and be straight bladed or have different degrees of bent shafts, different hand grips, and composition materials.
I started surfing nearly 50 years ago, and I still have the same board. It is badly dinged and delaminated. I could never rationalize the purchase of a new one since we only go to the ocean for one week out of the year.
However, after discovering flat-water SUP, and living at a lake, I could use it all the time. I made the jump and purchased a hybrid SUP board. You may give up a little stability in flat-water, for better performance characteristics while surfing.
In the past year, I have spent endless hours surfing, ocean distance paddling, and lake paddling. I have experimented with, and built a variety of different paddles.
If you would like a great core workout in addition to developing arms and shoulders, and great balance, give it a try.
To find out more about the sport, you could start with some of the information in Stand Up Paddle Magazine online. supsurfmag.com, or try your favorite search engine.
If you would like more detailed information, or would like to try SUP contact us.
#5 KICKSLEDDING
A great activity for the whole family. You can do it with your dog, with a harness and tugline setup, with a passenger, or by yourself. Kids love it.
To propel the kicksled, one stands on one runner and kicks down and back between the runners, alternating every few kicks and standing on both runners to glide. You can get a great workout similar to footbiking only on the ice or snow.
You can see or try one out at the gym. Do an online search for kicksled, for images and information. I have a wooden runner kicksled, and an Esla steel runner kicksled, with plastic covers for snow. You can also look for USA distributors such as vermontkicksled.com; yukonkicksled.com; mountainboysleds.com
II. OVERVIEW OF FUNDAMENTAL WEIGHT MANAGEMENT CONCEPTS
(review plan with your health care professional)Nearly half of all Americans are dealing with increasing weight management issues. The information presented here is a general overview of concepts that most people can incorporate into a healthy eating plan. It is not a diet plan. The conditioning recommendations are basic and easy to understand for beginners.
Just as there are many sure fire diets, there are sure fire, one of kind fitness protocols. That is not my belief. With regard to strength training protocols, I like the comment. "We get stronger often in spite of what we do instead of because of what we do."
Take these guidelines and see what makes sense for you.
If you want a place to go next, for strengthening and conditioning information backed by peer reviewed research go to the ACSM American College of Sports Medicine.
My recommendation for a simple eating plan, that I used to suggest to my elementary students, is what I call the "Pick it, Pluck it or Stick it Rainbow Eating Plan." Which essentially infers that a healthier way of eating would be to eat things, with minimal preparation, from a pick it state, from above the ground, to pluck it out of the ground, or stick it with a spear, like a fish, unless you are a vegetarian? And eat something in its natural state from every color of the rainbow.
Getting back to the basic premise, hopefully here is some useful information.
One pound of fat has 3500 kcal (calories) Older estimates used to say you burn one kcal/kg of bodyweight/kilometer walked or run. If you walk slow, or run fast it will overestimate the burn on on the lower end, and underestimate it on the high end. If you become familiar with M.E.T. values (metabolic equivalent values) you can find tables that tell you how many kcal you burn. In either case if you burn 500 kcal a day every day for 7 days that equals 3500kcal or you just lost one pound of fat.
Most effective weight loss tends to be 1-2 pounds a week. Create a deficit of 500 kcal per day, 250 from exercise and 250 from cutting out one bagel a day = 3500 kcal/wk or a loss of 1 pound times 52 weeks = 52 pounds a year.
Increase lean muscle mass, muscle is more metabolically active and burns more calories per pound. Use resistance exercise/weight training/emphasize compound movements utilizing large muscle groups, exercises should include pushing and pulling exercises for each area targeted. Lower body should include correctly done squatting and lunge type movements. Two to three times per week.
Daily aerobic base of brisk walking 30-60 minutes. If you are pressed for time break it into smaller portions during the day. Include some higher intensity efforts mixed in a few times per week.
Integrate more activity into your daily life. Take the stairs two at a time. If you sit for a large portion of the day, get up and do some squats or lunges.
Follow a stretching program daily.
Eat more high fiber foods, containing both soluble and insoluble fiber. However, too much fiber and phytates in certain grains can inhibit absorption of minerals.
Eat fish. Choose deep water fish, low on the food chain to minimize pollutants. Wild Alaskan salmon is a good choice; farm raised may have some issues for concern.
Avoid as much processed food where possible.
Get used to not adding sugar to anything
Try to avoid adding fat to anything. Use extra virgin olive oil for salad dressings and minimal amounts if added in food preparation. Steam where possible and add oil after cooking. You might use some coconut oil from time to time. I know it seems like heresy, because coconut oil is significantly saturated, but it contains medium chain triglycerides, which may behave a little differently. Check it out make your own decision. It is a heat stable oil, compared to most others.
Try not to eat visible fat. Fat has 9 kcal/gram, protein and carbohydrate 4 each.
Minimize foods of animal origin high in naturally occurring saturated fats (cheese, whole milk, cream, etc.
Avoid all trans fats. Maybe not a weight management factor, but definitely health related. These fats in amounts as little as 2-4 grams per day are doing damage to our arteries. Labeling has helped to identify them. But what needs to be understood is that they are formed when oils are hydrogenated or partially hydrogenated. Labeling laws don’t have to list less than .5 grams per serving, so if you eat 2 cookies and that is the serving size, you could be consuming .4 of a gram. What if you eat 4 or 6 a day? Or pick up a little here or there. ANY WHERE YOU SEE PARTIALLY HYDROGENATED ANYTHING. PASS IT UP! Except for naturally occurring small amounts in dairy products it is a man made fat that doesn’t belong in our bodies.
Avoid trigger foods. Those that you have a sensitivity to, are allergic to or a craving for. Select foods with the lowest glycemic load. This is determined by multiplying the glycemic index of a food times the grams of carbohydrate in a portion size.
Plan your meals so that most of your calories come from raw or lightly steamed vegetables. If eating meat, have it as an addition to the meal rather than the center of the meal. If pursuing a vegetarian diet, make sure you are getting the proper combinations of foods to provide you with the necessary amino acids.
Avoid diet and regular soda. Besides health issues, most research that I have looked at indicate that diet sodas do not promote significant weight loss. Regular soda is mostly sugar. Drink water; flavor it if you wish with a squirt of lemon, or other fruit.
Avoid alcohol, mostly on the basis of a decrease in inhibition, which may make it easier to get sidetracked from your eating plan. If you are going to drink those extra calories, why not get them from nutritious food?
Drink plenty of non-chlorinated water. No hard fast rules here. There are all kinds of recommendations from 8 glasses of 8 ounces up to drinking up to ½ your bodyweight in ounces of water per day. Check out the Mayo Clinic recommendation. mayoclinic.com/health/water/NU00283PSYCHOLOGICAL SUPPORT:
Set short term and long term goals.
Avoid eating in high stress situations
Avoid eating while watching TV
Don’t medicate with food.
Plan what you are going to eat ahead of time.
Prioritize time.
Meditation and biofeedback awareness (explore further)
Seek a spiritual connection to life and to others on a daily basis.
Connect with others on a similar wellness path. In today’s world, facebook, twitter, etc.NUTRITIONAL AND IMMUNE SUPPORT
Often times toxic compounds that enter our bodies that haven’t been effectively eliminated are stored in our fat cells. Studies have pointed to DDT in fat cells long after it was no longer being used. As the body begins to lose weight, those fat cells may dump the fat soluble substances into the circulation where the liver must detoxify it. If there is a large amount of weight loss in a short period of time, this may place a significant burden on the liver. Silymarin, an active substance in milk thistle may help the liver in detoxification. Follow recommended dosages.
Multivitamin and mineral supplement.
Vitamin C-a great deal of mixed recommendations. It appears 500-1000 seems to be a safe dosage. Check with your health care professional.
Alpha lipoic acid- may help regenerate antioxidants.
Choose alkali producing foods. Do some research on how to alkalize your diet. A high acid producing diet can leach calcium from bones to try to maintain constant blood ph.
Reduce the amount of omega 6 oils in the diet, raise the levels of omega 3s
The standard American diet is from 10 to 15 or more to 1 ratio of omega 6 to 3 oils. The ratio should be closer to 3 to 1 of omega 6s to omega 3s, if eating a balanced diet.
Eat 3 to 5 servings of fresh fruit daily. Check the glycemic load.
Drink several cups of green tea a day, preferably some decaffeinated. Or use green tea extract containing the EGCG polyphenols. Studies have had mixed results for weight loss but a few have shown some benefit.
A final thought comes to mind. Somewhere in Dan Buettner’s book the Blue Zone, lessons for living longer from the people who’ve lived the longest, is a statement that the Okinowan’s use. I believe it is Hara hachi bu, or something like it, but it means eat until 80% full.III DEVELOPING A BASIC PROGRESSIVE RESISTANCE STRENGTHENING EXERCISE PROGRAM:
Why?
Everyone should be engaged in some type of progressive resistance training program. Here are a few reasons why: if one needs to reduce weight, it produces lean muscle mass which is more metabolically active than fat, hence ,burns more calories; aids in building bone mass; can help maintain muscle mass and function with ageing; perform daily tasks with less perceived effort and improve endurance. Endurance is related to strength. Walking up a long steep hill using only a fraction of your leg strength is less taxing on a body compared to a weaker set of legs using a higher percentage of available muscle for the task. If you lead an active lifestyle, enhanced strength will likely help prevent injury, and improve performance.Overview of information:
I have changed this section to give a general overview of what a progressive resistance program might include. It is not a specific program. It is meant to provide the beginner with fundamental concepts from which you can help design your own program, specific to your needs. If you need help with this contact me. Consultation is free.After you have a general plan, you can go to a website like exrx.net and find video clips of a wide variety of exercises, to see how to perform them correctly.
A little background
: I began weight training in 1957, following many of the methods of the legendary old time strongmen. Adding to that base, I jumped around following, from time to time, whatever was a popular method of training, picking up on what was coming out of Eastern Europe and Russia and anywhere else I could find ideas on how to build strength and power.Over the years I have seen many of these concepts and methods reappear repackaged and relabeled. I do not intend this in a negative way, but simply an observation about how things meld, merge and evolve, usually for the better.
Today, wider access to peer reviewed research helps us rediscover what portions of past practices have validity, and enable us to synthesize more effective training methods.
I am not passionate about any specific program, as being the only way. Based on that premise and my personal experience, I will make some general recommendations.
Understanding Progressive Resistance
: the fundamental concept is that to make a muscle develop, it must be challenged to go beyond its current capability. To do this we provide a manageable resistance that we can perform for a maximum number of repetitions, say 10, that is a set. If we only do one set, and we give 48 hours to rest for the muscle to rebuild and become stronger, over the course of several workouts we will eventually be able to perform, say 15 reps. The next workout we add some resistance, and manage perhaps 8-10 reps, and repeat the process again.It is generally accepted that a certain number of repetitions are better for hypertrophy, endurance, and strength, with more controversy regarding the number of sets, application and type of training methodologies and training for power. Depending on your interest, a place to start would be to look at position stands by the ACSM, The American College of Sports Medicine. For anyone who would like a look at some of the reasons why we may believe the repetition paradigm, or challenge our beliefs about it, have a look at a study done by Ralph Carpinelli. http://www.scsepf.org/doc/291208/Paper1.pdf
A good book to look at regarding periodization, which is essentially breaking your training into cycles, is written by Tudor O.Bompa, Phd. And Michael C Carrere, called Periodization Training for Sports, published by Human Kinetics.
Here are a few key concepts
to keep in mind when embarking on a progressive resistance program:
Clear your program with your health care professional.
Perform exercises in a controlled manner. Do not use momentum. Follow strict form.
Perform the eccentric, lowering motion, slower than the concentric, or shortening motion.
Use full range of motion
Breathe correctly. This means to inhale during the concentric portion of the exercise and exhale during the eccentric portion. As a beginner try to avoid the use of the valsalva maneuver. Often when lifting heavy, individuals perform the Valsalva maneuver, which does have a stabilizing effect on the spine, however, if sustained can dangerously disrupt blood pressure. A brief valsalva maneuver is considered to be unavoidable when lifting over 80% of a maximum voluntary contraction.(1)
Never work through pain during exercise.
Choose multi joint compound exercises, as a priority over isolation exercises. This is the way me move.
Always perform a general body warm-up to raise body temperature, and move through the full range of motion to prepare the muscles, joints and circulatory system. Always work the extensors and flexors at each exercised joint. Example, if you do a pulling exercise include an exercise involving pushing, like a rowing exercise make sure
Try to use a variety of exercises and vary the direction of force application.
include squatting/lunging exercises.
Heel raises
Abdominal exercise (choice)
Back extension exercise.This information should provide the beginner with enough information to set up your own resistance training program, with little difficulty.
If you need more assistance contact me or another professional in the field.
(1)MacDougal, J.D., R.S. McKelvie, D.E. Moroz, D.G. Sale, N. McCartney and F. Buick "Factors Affecting Blood Pressure During Heavy Weightlifting and Static Contraction"Journal of Applied Physiology, Vol.73, Issue 4, 1590-1597, Copyright 1992 by American Physiology Society.
IV. MAINTAINING BONE DENSITY
The purpose of this article is to provide the reader with some basic information about bone density, how the effects of the type and modality of exercise may affect it, and some suggestions on what factors may be modifiable, as well as, some resources for further investigation.
One of the negative consequences of ageing is loss of bone mineral density.
Up until our mid thirties, we are pretty good a building bone density. There is evidence that activities that promote higher bone density development earlier in our lives can serve as sort of a reservoir as we lose bone density later in our lives. This does not mean, however, that we can just stop exercising and coast on our earlier reserves. If we lead sedentary lives, or choose to participate in a high level of non weight bearing activities, we may deplete bone density reserves more rapidly.
The sites for the loss of bone mineral density can vary depending on the absence of sufficient strain or weight bearing at specific points, such as, the spine, hip, or wrist.
In addition to being site specific, bone also can lose density at different rates within each bone.
We can divide bone structure into two areas on a fundamental level, trabecular bone, and cortical bone. The trabecular area, also called spongy or cancellous bone, is largely composed of a lattice like structure on the interior of the bone. Cortical bone forms the outside shell of long bones and surrounds the spongy areas which extend to the ends of the long bones, as well as, the vertebrae and pelvis. Beyond this fundamental distinction, it is a great deal more complex, with different bones having more or less of either cortical or trabecular bone, as well as, a hierarchy with each area.
When one switches from an active weight bearing lifestyle to a more sedentary one, primary loss is trabecular bone, but it could take a much longer time for significant cortical bone to resorb by comparison.
Non weight bearing activities, where the body is being supported by a piece of equipment or the environment, as in bicycling or swimming respectively, may have negative effects on bone mineral density (BMD).
In some studies, competitive road cyclists have been found to have reduced bone density compared to sedentary controls.
In a small study of men ages 20 to 59 comparing runners to cyclists, it was found that cyclists were 7 times more likely to osteopenia of the spine and hip than the runners, 63% to 19% respectively.(7)
A study involving 14 competitive male cyclists, ages 27-44, found that after 1 year of intense training and competition, there was a significant loss in BMD at the hip, but failed to reach statistical significance at the spine.(1)
Swimming and cycling can provide great physical benefits for our body; they are just not at the top of the list for bone building. The key to maintaining and building bone is weight bearing activity.
Bone is continuously resorbing, breaking down, and rebuilding. To maintain the integrity of bone this process must be kept in equilibrium.
The generally accepted theory is that mechanical stresses or strain on bone, cause bone to fatigue requiring restructuring to adapt to the strain As the strain on bone increases, the
remodeling attempts to keep pace, by forming more bone. This process is similar in the way muscle adapts to increased mechanical demands, by remodeling through hypertrophy. The process is not the same, but the principle is. Strain provides the stimulus to remodel, equal to the demand of the forces acting on bone, and in the direction to resist those forces.
Bone formation is essentially a working relationship, between osteoclasts and osteoblasts, attempting to maintain homeostasis. Osteoclasts break down bone, and osteoblasts build up bone.
There are five types of forces that a bone can experience to cause strain. Compressive force causing axial loading, when forces push one end of the bone toward the other; shear forces, across the bone; bending forces causing bone to fracture on the opposite side from impact; torsion, when a bone is twisted; and tension, pulling the bone apart end to end
Weight bearing exercise encourages positive bone remodeling. As mentioned earlier, bone development is also site specific, with certain activities better for stimulating development in one location than another.
The mechanical forces necessary for bone formation are dependent on magnitude, direction, rate and repetition of force application.
A study where more than 20 articles were reviewed, indicated that heavy resistance 70-90 % 1 RM, 8-12 repetitions, 2-3 times per week for a year resulted in improved, site specific BMD in post menopausal women. (11)
It would seem that high strain rate and high forces in varied movements are superior to lower forces and high repetitions. (3)
Regarding repetitions necessary for increasing BMD, in a study by Kato et.al that tested the hypothesis that 10 repetitions of maximum vertical jumps per day, 3 times a week would improve BMD. Their conclusion was that high impact, low repetition jumps was site specific in developing BMD in young women who had almost reached the age of maximum bone density.(5)
The significance regarding the rate of force application seems to favor power training over strength training. In one study 53 women participated in a program of exercise which included a progressive resistance protocol where the variable was the speed of the concentric repetitions. After one year, the power trained group had statistically significant positive BMD compared to the strength trained group. (8)
There is also evidence that osteogenic activity is dependent on fluid flow in bone. (11) This indicates dynamic movements are needed as a stimulus.
Mechanotransduction is a process where compression stress on bone causes the interstitial fluid in the bone matrix to flow from away from the area of compressive stress. This apparently influences bone development. In a study by CH Turner, et al they state that the degree of fluid flow seems to be influenced by the loading rate in a dose dependent way. In their investigation, they found that frequencies between .5 and 2 Hz increased bone formation nearly 4 fold, where as frequencies below .5 showed no development. (10)
Each of these factors is interrelated and any program focused on bone density development will need to address each of these.
Another approach to improving BMD worth mentioning, is the use of low force and high frequency. This approach is gaining popularity with the use of vibration platform training. There appears to be some evidence for the benefits of this type of training and the reader might want to check out this site regarding NASA research. http://spaceresearch.nasa.gov/research_projects/shaken.html
There are other factors that can affect BMD that haven’t been discussed in depth, in this article. These include but are not limited to the effects of hormones, diet, ageing, genes, and disease.
The following list suggests some modifiable factors that might be considered in developing an exercise program to maintain bone density:
Weight bearing
High ground reaction forces superior to weight supporting exercises
Low repetition loading and unloading with high GRF (example: squat jumps, depth jumps) Remember it may only take 30 to 50 squat jumps a day to maintain BMD
Site specific. Check out this website to see what kind of BMD results from participation in these sports and activitieshttp://depts.washington.edu/bonebio/ASBMRed/exercise.html
Direction specific. Vary exercises to stimulate development in all directions. Consider the directional forces created by bending, torsion, compression, tension and shear.
Dietary considerations: Adequate calcium, magnesium and vitamin D; sweat loss may contribute to calcium loss in endurance athletes; dried plums may be osteogenic; high phytates from whole grains may precipitate mineral loss; high acid forming diet draws calcium from bones in an attempt to maintain proper ph balance; high caffeine, smoking, too much protein, too much phosphorus all may have negative effects.RESOURCES
(1)Barry DW, Kohrt Wm. BMD decreases over the course of the year in competitive male cyclists. Journal of Bone Miner Res. 2008 April; 23(4):484-91.
(2)Heinonen, A, Oja P,Kannus P, Sievanen H, Manttari A, Vuori I. Bone mineral density of female athletes in different sports.
Bone Miner 1993 Oct; 23 (1):1-14(3)Heinonen A, Oja P, Kannus P, Sievanen H, Haapasalo H, Manttari A, Vuori I. Bone mineral density in female athletes representing sports with different loading characteristics of the skeleton.
Bone 1995 Sep; 17(3)L 197-203.(4)Hooshmand S, Arjmandi BH. Viewpoint: dried plum, an emerging functional food that may effectively improve bone health.
Ageing Res Rev. 2009 April; 8(2): 122-7.(5)Kato T, Terashima T, Yamashita T, Hatanaka Y, Honda A, Umemura Y. Effect of low-repetition jump training on bone mineral density in young women. Journal of Applied Physiology. 2006 March; 100 (3) 839-43 Epub 2005 Nov. 3.
(6)Nevill, A. Holder, R, Stewart, A. Do sporting activities convey benefits to bone mass throughout the skeleton?
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Journal of Geriatric Physical Therapy, 2007; 30(2):79-88.V. HEART RATE AND EXERCISE INTENSITY. GENERAL APPLICATIONS FOR ENDURANCE TRAINING
When exercising in a steady state there is an approximate linear relationship between oxygen consumption and heart rate. This becomes the basis for using heart rate as an indicator for oxygen consumption and development of training zone intensity.
Determining Maximum Heart Rate, MHR
The most significant player in the equation is one’s maximal heart rate. There are several ways used to determine this value, however, the results may be quite far from our personal reality. A study in Medicine in Science and Sport, reported that age predicted maximum heart rate, for 95% of most individuals will actually be within + or – 20 beats per minute. [Medicine & Science in Sports & Exercise 2007; 39(5):822-829].
One widely used method of determining MHR is to use 220-age = MHR for males, or 226- age for females. A possibly more accurate prediction model was reported in Medicine &Science in Sports and Exercise, using 207 - .7xage. (1)
You can use and check out some of these formulas at: www.brianmac.co.uk/maxhr.htm
Clearly the most accurate way to determine MHR would be to have an exercise stress test with an EKG.
If you have been cleared by an MD, you can perform your own test. The method I have used is to strap on your heart rate monitor and begin a sustained uphill run, warming up for about 15 minutes, then increase the intensity to race pace and finish with a maximal final 5 minutes to the absolute max. It is brutal but will give you a realistic MHR.
Next you need to do this for each type of training modality you use, cycling, swimming, roller skiing, footbiking, etc. Why? Because each activity is likely to illicit a different max heart rate. Swimming will likely be one of the lowest, in part because of the horizontal body position and cooler water temperatures.
There are other factors that can affect hemodynamics and maximum heart rate. Overtraining, altitude, body position, temperature and total musculature involved can all affect MHR.
Determining target training zones.
Once we have our MHR established, we can determine our target training zones. There are two methods commonly used. One is based on a percentage of MHR, the other the Karvonen formula, uses a percentage of your heart rate reserve, HRR, which is the difference between your absolute resting heart rate and your maximum heart rate. The Karvonen formula is generally considered to be more of a gold standard, but it is not without error.
Not to make it more confusing, but the % HHR more closely parallels our %V02 reserve capacity, the difference between our resting o2 consumption and our VO2max instead of our %VO2 max. This doesn’t mean a great deal to us in practical terms, but to get a better understanding check out: http://www.ncbi.nlm.nih.gov/pubmed/9139182
To use the formula, we need another number in addition to your MHR, your resting heart rate. You arrive at this by averaging your pulse over 3 days, taking it for one full minute before getting out of bed. This gives you your resting pulse. You then subtract that number from your MHR to give you your heart rate range. Next, you take the percentage of that range that you wish to work at, and add back your resting heart rate to that value. That will usually result in a slightly different target number then if you just take a percentage of MHR.
Choosing target zones
Depending on your fitness objectives and which energy systems you wish to target will determine the training target zones, as well as the time spent in each zone. For a general recommendation, the ACSM recommends training between 60 and 85% of HRR and for low fitness individuals 50% is a good starting place.
There is a wealth of information available on the use of target zones and endurance training. The purpose of this article is to give the reader a general understanding of the concepts and some direction in which to search. I would suggest searching the ACSM position stands on all types of exercise, for the most conservative evidence based recommendations to start with.
Five methods to assess exercise intensity
All together there are probably 5 methods that one may use to assess exercise intensity. We mentioned the %of MHR and the %HRR. More subjective measures worth investigating would be MET values; the RPE or rate of perceived exertion scale, usually based on a variation of the Borg Scale, see: http://www.acsm.org/AM/Template.cfm?Section=current_comments1&Template=/CM/ContentDisplay.cfm;
And the Talk test. See: http://www.acsm.org/Content/ContentFolders/NewsReleases/2004/“TALK_TEST”_A_CONSISTENT_GAUGE
Recommendations for the use of heart rate and target zones:
Follow the ACSM guidelines as a starting point. If you are engaged in sports specific training, then you will want to do more research on training zones, frequency, duration, and intensity, and of course developing all the attributes for your sport/s
Frequency: 3-5 days/week
Duration: 20 to 60 minutes. May be cumulative in a minimum of 10 minute blocks throughout the day.
Intensity: 55/65 to 90% of MHR or 40/50% to 85% of max oxygen uptake reserve VO2R or Heart rate reserve HRR.
How does it all fit together?
Try to become more familiar with the RPE scales, since I believe this is a more natural way to feel what our bodies are telling us rather than risk becoming addicted to our heart rate monitors. Studies have shown that this method can actually be a very reliable assessment of our exercise intensity.
I still have one of the first Polar heart rate monitors from the early 1980s that I used to keep track of almost every workout and log in every 5 seconds of effort. I still use a heart rate monitor occasionally, but more for helping me pay attention to my own biological feedback cues.
If your mission is to run a faster marathon, move up in your age group rankings in which ever discipline you are pursuing, then by all means learn all that you can about training methods, training zones, and heart rate monitors. If your goal is simply to become optimally fit, than view all of this through that lens. Never the less, It is still important and relevant information.
REFERENCES
(1) Gellish, RL, Goslin BR, Olson RE, McDonald A, Russi GD, Moudgil VK . Longitudinal modeling of the relationship between age and maximal heart rate.[ Medicine in Science Sports and Exercise, 2007 May;39(5):822-9]
(2) ACSM position stands: http://www.acsm.org/AM/Template.cfm?Section=Position_Stands
(3) Polar heart rate monitors: http://www.heartratemonitorsusa.com/Pages/POLAR/All.html
(4) Use of the Borg Perceived exertion scale / CDC: http://www.cdc.gov/physicalactivity/everyone/measuring/exertion.html
RESOURCE ARTICLES/LINKS
GREEN TEA AND DEPRESSION: In a study of 1058 >70 year old community dwelling Japanese who regularly drink green tea, it was found that the drinking 4 cups of green tea compared to less than 1 cup per day resulted in a significant reduction both mild and severe depression. http://www.ajcn.org/cgi/content/abstract/90/6/1615
POMEGRANATE EXTRACT MAY HELP IN STRENGTH RECOVERY FROM ECCENTRIC EXERCISE Male subjects were divided into two groups, one supplemented with pomegranate extract and one not supplemented, for a period of 9 days. They were given a bout of eccentric exercise consisting of two sets of 20 reps of maximal elbow flexion, enough to produce delayed onset muscle soreness. The results showed similar decreases in strength of 72% after two hours post exercise and full recovery was still incomplete after 96 hours. However, the supplemted group showed statistically significant greater strength recovery. The study's conclusion was that supplementing with pomegranate extract significantly improves isometric strength after 2-3 days of damaging eccentric exercise. (Thrombold, Justin R, Barnes, Jill, N, Critchley, Leah, Coyle, Edward F. Ellagitannin Consumption Improves Strength Recovery 2-3 days after Eccentric Exercise. Medicine & Science & Sports & Exercise. 42(3):493-498, March 2010)
SWINE FLU POSSIBLE COMPLEMENTARY NUTRITIONAL INFORMATION: I came across this information and thought it might offer some insight into the nutritional interventions which might be typically used to help develop resistance to viral infections. Some that we assume are always beneficial may actually be causing the opposite. It offers some explanation as to why it may hit some more severely than others. This is information is not being offered as medical advice. Please remember all interventions should always be discussed with your family physician. Here is the link; ( http://leifgrunseth.com/2009/04/many-natural-options-for-fighting-off-swine-flu/)