Exercise science
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Short presentation given at a local high school exercise science class. Had a great workout with the class afterwards. www.markjpitcher.com
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Exercise science
- 1. Exercise Science Developing a simple exercise program Mark Pitcher DC, MSc chiropractor, exercise physiologist
- 10. Long Steady State Exercise?
- 22. Goals Reach your goals and get results by combining these different approaches appropriately into your workout program.
- 23. Goals Periodize (plan ahead) to continue to make gains over time
- 26. Mark Pitcher DC, MSc chiropractor, exercise physiologist www.markjpitcher.com www.vailhealth.com www.facebook.com/myvimg
Notas do Editor
- Fat burning... Growth Hormone, Insulin-like Growth Factor, Glucagon, Adrenaline, Thyroid (T3/T4), Testosterone. Fat Storing ... Insulin, Estrogen, Cortisol, and Leptin
- Periodization: Plan over time For example: 1-3 weeks - Corrective exercise + Core Strength Development 4 weeks - Metabolic Conditioning Adaptation; Body gets more efficient to the applied stresses Progressive Overload: Gradually increasing the demand, load, distance, power Recovery: Must have recovery Sleep - Growth Hormone Muscle repair and regeneration Supercompensation:
- Periodization: Plan over time For example: 1-3 weeks - Corrective exercise + Core Strength Development 4 weeks - Metabolic Conditioning Adaptation; Body gets more efficient to the applied stresses Progressive Overload: Gradually increasing the demand, load, distance, power Recovery: Must have recovery Sleep - Growth Hormone Muscle repair and regeneration
- Periodization: Plan over time For example: 1-3 weeks - Corrective exercise + Core Strength Development 4 weeks - Metabolic Conditioning Adaptation; Body gets more efficient to the applied stresses Progressive Overload: Gradually increasing the demand, load, distance, power Recovery: Must have recovery Sleep - Growth Hormone Muscle repair and regeneration Supercompensation:
- Energy Systems Anaerobic- No O2 Alactic – ATP-PC - a few secs Lactic Anaerobic Gylcolosis a few mins Lactate Threshold Aerobic uses O2, Less byproducts easy to deal with – more efficient Lactate Threshold
- Steady state training: Any form of aerobic/cardiovascular training where some reasonably steady intensity is maintained for an extended period. So this might be something akin to 20-60 minutes at a steady heart rate of 140-150 (could be higher, could be lower). I’m just going to call this cardio or aerobics, even though I know some people get into longwinded semantic arguments about it. I’m sure everybody knows what I’m talking about. Interval training: Essentially any form of activity that alternates higher intensity activity (such as 30-60 seconds almost all out) with periods of lower intensity activity. The rest interval can be passive (sit on your butt) or active (keep moving at a low intensity). While weight training can technically be considered interval training, I’m going to restrict this article to interval training done with standard cardio modes (i.e. running, cycling, stairmaster, etc). A typical interval workout for fat loss might be a short warmup followed by 5 repeats of 60 seconds near maximum intensity alternated with 60-90 seconds of very low intensity activity, followed by a 5′ cool down. This is often referred to as high intensity interval training (HIIT) which differentiates it from aerobic interval training discussed immediately below.
- Steady state training: Any form of aerobic/cardiovascular training where some reasonably steady intensity is maintained for an extended period. So this might be something akin to 20-60 minutes at a steady heart rate of 140-150 (could be higher, could be lower). I’m just going to call this cardio or aerobics, even though I know some people get into longwinded semantic arguments about it. I’m sure everybody knows what I’m talking about. Interval training: Essentially any form of activity that alternates higher intensity activity (such as 30-60 seconds almost all out) with periods of lower intensity activity. The rest interval can be passive (sit on your butt) or active (keep moving at a low intensity). While weight training can technically be considered interval training, I’m going to restrict this article to interval training done with standard cardio modes (i.e. running, cycling, stairmaster, etc). A typical interval workout for fat loss might be a short warmup followed by 5 repeats of 60 seconds near maximum intensity alternated with 60-90 seconds of very low intensity activity, followed by a 5′ cool down. This is often referred to as high intensity interval training (HIIT) which differentiates it from aerobic interval training discussed immediately below.
- Most indoor aerobics modes tend to be boring, especially for long durations. Exercise can, of course, be done outdoors but this raises a whole separate set of issues (bicycle safety, running outdoors, traffic, etc) that are beyond the scope of this article. This is a big part of why gyms have music and televisions; I have seen one with a cardio movie theater. An excess of endurance training, especially at higher intensities (too close to lactate threshold, a topic for another newsletter) seems to cause muscle loss, decrease strength and power, and cause overtraining. This is major issue for bodybuilders and strength/power athletes but can be avoided by keeping the intensity under control. Too much repetition of the same mode of aerobics can generate overuse injuries, both runners and cyclists are prone to knee problems, swimming causes rotator cuff issues (and the cold water tends to increase hunger), etc. This can be avoided by non-endurance athletes by rotating the type of activity being done. Unless people are tremendously aerobically fit, it can be difficult to burn a huge number of calories unless the duration of each workout is just ridiculous. So, at moderate intensities, the average person might burn 5-10 calories/minute; a 145 lb person burns about 100 calories per mile walking or running. So over an hour aerobic session, you might achieve 300-600 calories burn. While this can certainly add up if done daily, it’s still a fairly small expenditure. The people trotting along on the treadmill or spinning on the bike at low intensities, often for only 30 minutes, are burning jack all calories. Which are usually more than compensated when that person figures that they must be burning at least 1000 calories and rationalizes that cheeseburger and milkshake because of it. This is one of those weird ironies: very high caloric expenditures through aerobics are reserved for trained endurance athletes, and they typically don’t need it. The people who need to be burning a lot of calories through aerobic activity usually aren’t able to, at least not initially.
- Interval training: Pros For a given time investment, interval training leads to a greater fat loss and this occurs despite a smaller calorie burn during activity. This is because interval training generates a much larger EPOC (excess post-exercise oxygen consumption) which are the calories burned post exercise. Interval training may improve the muscle’s ability to use fat for fuel more effectively than aerobic training (note: recent studies have also suggested that interval training can generate very rapid improvements in endurance performance in a very short period but this is beyond the scope of this article). Time efficient: Not everybody has the time to devote to an hour (or more) of aerobic training per day. A properly set up interval workout may only take 15-20 minutes. Time seems to pass faster: Compared to regular aerobics, which can be mind numbingly dull (especially if done indoors), the change in intensity with intervals seems to make the workout pass faster. Interval Training: Cons The intensity of intervals makes them inappropriate for beginners. One exception is a style of training called aerobic intervals which I mentioned above. But high intensity interval training is simply inappropriate for beginning exercisers, for the same reason that high intensity weight training is inappropriate. Intervals are high intensity training, this has implications for the overall training setup (discussed in more detail in part 2) and integration with the rest of your program (i.e. weight training). Simply put: if you think you can train legs in the weight room 2-3X/week and do intervals an additional 2-3X/week on alternate days, you are incorrect unless you are deliberately trying to overtrain or get injured. Higher risk of injuries: this depends somewhat on the type of activity with high impact activities such as sprinting carrying a higher injury risk (especially for heavier individuals) than intervals done on the bike or Stairmaster. Limited in how many days they can be performed. Two to three days per week is about the maximu for interval training, most endurance athletes won’t do intervals more than twice/week. Have I heard of people trying to interval daily? Yes. Do I think it’s a good idea? No. Intervals hurt, especially intervals in the 60-90 second range where muscular acid levels are very high. If you’re not willing to push yourself, you won’t get much out of interval training. You know the warnings on most aerobics machines, that tell you to stop if you feel signs of exhaustion or fatigue; that’s what a properly done interval program should feel like. Sensations of burning in your legs (from high acid levels in the muscle) along with extreme discomfort are not only common but expected. Some people also report nausea initially, this can be made worse if they have eaten too close to training.
- Interval training: Pros For a given time investment, interval training leads to a greater fat loss and this occurs despite a smaller calorie burn during activity. This is because interval training generates a much larger EPOC (excess post-exercise oxygen consumption) which are the calories burned post exercise. Interval training may improve the muscle’s ability to use fat for fuel more effectively than aerobic training (note: recent studies have also suggested that interval training can generate very rapid improvements in endurance performance in a very short period but this is beyond the scope of this article). Time efficient: Not everybody has the time to devote to an hour (or more) of aerobic training per day. A properly set up interval workout may only take 15-20 minutes. Time seems to pass faster: Compared to regular aerobics, which can be mind numbingly dull (especially if done indoors), the change in intensity with intervals seems to make the workout pass faster.
- Interval Training: Cons The intensity of intervals makes them inappropriate for beginners. One exception is a style of training called aerobic intervals which I mentioned above. But high intensity interval training is simply inappropriate for beginning exercisers, for the same reason that high intensity weight training is inappropriate. Intervals are high intensity training, this has implications for the overall training setup (discussed in more detail in part 2) and integration with the rest of your program (i.e. weight training). Simply put: if you think you can train legs in the weight room 2-3X/week and do intervals an additional 2-3X/week on alternate days, you are incorrect unless you are deliberately trying to overtrain or get injured. Higher risk of injuries: this depends somewhat on the type of activity with high impact activities such as sprinting carrying a higher injury risk (especially for heavier individuals) than intervals done on the bike or Stairmaster. Limited in how many days they can be performed. Two to three days per week is about the maximu for interval training, most endurance athletes won’t do intervals more than twice/week. Have I heard of people trying to interval daily? Yes. Do I think it’s a good idea? No. Intervals hurt, especially intervals in the 60-90 second range where muscular acid levels are very high. If you’re not willing to push yourself, you won’t get much out of interval training. You know the warnings on most aerobics machines, that tell you to stop if you feel signs of exhaustion or fatigue; that’s what a properly done interval program should feel like. Sensations of burning in your legs (from high acid levels in the muscle) along with extreme discomfort are not only common but expected. Some people also report nausea initially, this can be made worse if they have eaten too close to training.