Summary of Doug McGuff and John R. Little's Body By Science

Everest Media

Description

Please note: This is a companion version & not the original book.
Sample Book Insights:
#1 Health is a state of being that is lacking a precise definition. The fitness industry offers no definitions, nor does the medical industry.
#2 Health is the body’s ability to maintain the necessary balance between the catabolic and anabolic states. Fitness is the body’s ability to withstand, recover from, and adapt to environmental threats.
#3 The distinction between exercise and physical activity is that exercise is purposefully directed activity that stimulates the body to produce a positive adaptation in one’s level of fitness and health. Physical activity in general, while yielding the potential to produce certain adaptations in one’s fitness and health, can also undermine one’s health.
#4 The idea that athletes are healthy because they are fit is false. Many athletes who compete at a world-class level do not achieve that level of world-class performance in a way that enhances their health. This is because it is not possible to do so.

Sujets

• Sport
• Autres sports
• Général

Informations

• Publié par: Everest Media LLC
• Date de parution: 08 mars 2022
• Nombre de lectures: 0
• EAN13: 9781669351382
• Langue: English
• Poids de l'ouvrage: 1 Mo

Extrait

Insights on Doug McGuff and John R. Little's Body by Science
Contents Insights from Chapter 1 Insights from Chapter 2 Insights from Chapter 3 Insights from Chapter 4 Insights from Chapter 5 Insights from Chapter 6 Insights from Chapter 7 Insights from Chapter 8 Insights from Chapter 9 Insights from Chapter 10 Insights from Chapter 11
Insights from Chapter 1

#1

Health is a state of being that is lacking a precise definition. The fitness industry offers no definitions, nor does the medical industry.

#2

Health is the body’s ability to maintain the necessary balance between the catabolic and anabolic states. Fitness is the body’s ability to withstand, recover from, and adapt to environmental threats.

#3

The distinction between exercise and physical activity is that exercise is purposefully directed activity that stimulates the body to produce a positive adaptation in one’s level of fitness and health. Physical activity in general, while yielding the potential to produce certain adaptations in one’s fitness and health, can also undermine one’s health.

#4

The idea that athletes are healthy because they are fit is false. Many athletes who compete at a world-class level do not achieve that level of world-class performance in a way that enhances their health. This is because it is not possible to do so.

#5

While many people associate fitness with health, in reality, fitness and health are not extrinsically linked. Fitness can create a physiological situation whereby health declines, as it creates a level of metabolic adaptation that is not balanced between the anabolic and catabolic states.

#6

Health benefits from exercise only occur if the increase in activity levels is close to the level our DNA specifies for our species, which is typically not the case for most exercise programs.

#7

The pursuit of aging and health is not just limited to humans. We associate life with health, and health with fitness. Longevity is not necessarily linked to health, however, as it can be achieved through the application of human intellect and technology.

#8

We must learn to distinguish between fitness and health. We must shift our focus from how much exercise we can endure to how little we require to produce the positive effects of exercise. This will help us live healthier lives and longer ones.
Insights from Chapter 2

#1

The difference between the two men is that the jogger is doing it for health, and the other is doing it for time. While the first one is sacrificing health for time, the second one is sacrificing time for health.

#2

Six minutes of pure, hard exercise once a week was just as effective as an hour of daily moderate activity. The study showed that very intense exercise resulted in unique changes in skeletal muscle and endurance capacity, which were believed to require hours of exercise each week.

#3

The findings of this study are significant because they document the first instance of scientific evidence that very intense sprint training can increase aerobic endurance in untrained people.

#4

Despite the outcry from the fitness world and some parts of the medical world, these results have been replicated many times over the years and have always shown the same result. In other words, high-intensity exercise can improve your fitness just as much as longer, more conventional exercise can.

#5

Six to nine minutes of exercise per week is enough to improve your health and fitness, and the benefits are comparable to those gained from exercising for up to four and a half to six hours per week.

#6

The key to these positive adaptations is high-intensity muscular work, which can be achieved in just 30 seconds.

#7

Cardiovascular exercise is often referred to as cardio or aerobics. Dr. Kenneth Cooper, the physician who introduced the concept of aerobics to the world with his book of the same title, wrote a follow-up book entitled The New Aerobics.

#8

If the intensity of exercise is too low, nothing much in the way of a stimulus is presented to the body. If the intensity is too high, you will increase the stimulus for positive adaptation, but you will also appreciably increase the chance of doing damage that will undermine your health.

#9

The first attempt to confine an adaptive-specific exercise-response relationship to the aerobic system was made in the mid-1960s by Kenneth Cooper. However, he plunged in at the middle of a rather broad continuum, and his prescription has destroyed other aspects of health in order to enhance one lone segment of it: the aerobic system.

#10

The term aerobics was invented by Cooper to describe his particular approach to training. However, the term has since been used to describe any activity that is low in intensity and steady in state, regardless of whether it is related to the aerobic metabolic pathway.

#11

The cardiovascular system is not the only system that benefits from increased metabolism. Metabolism occurs throughout the cell, and the more you can increase all the components of metabolism, the more the cardiovascular system will benefit.

#12

Energy enters the cell in the form of glucose, which is used to power glycolysis, an anaerobic process that produces two molecules of ATP. If you push glycolysis to cycle as fast as it can, you can produce pyruvate, which is used in the aerobic cycle to produce 36 molecules of ATP.

#13

The lactic acid produced during intense exercise can be used to fuel your muscles, if you are intent on improving your aerobic capacity. Your aerobic system is at its highest level when recovering from lactic acidosis.

#14

When our muscles need energy during high-intensity exercise or in an emergency, most of the ATP used will be derived from the rapid cycling of the glycolytic cycle. As this happens, lactate can quickly accumulate, but this is not necessarily the end of the road.

#15

As anyone who has visited a high-altitude site such as Denver will note, minimal exertion at high altitude will produce extreme shortness of breath. Within a few days of exposure, breathing becomes easier. This is because as oxygen diffuses from the lungs to the blood, it is picked up by hemoglobin molecules, which has a high binding affinity for oxygen.

#16

The excess energy stored in the body in the form of triacylglycerol is released during stressful situations, such as severe muscular exertion or during emergency situations. The hormones adrenaline and glucagon activate an enzyme called hormone-sensitive lipase, which releases fatty acids into the blood.

#17

High-intensity exercise promotes the breakdown of glycogen and the use of this energy, which helps restore insulin sensitivity on muscle cells.

#18

In an amplification cascade, one molecule of adrenaline serves to cleave thousands of molecules of glucose off of glycogen, an extremely effective way of providing large amounts of energy to our working muscles during an emergency situation.

#19

High-intensity exercise, such as sprinting, really taps into the largest store of glucose in your muscles and mobilizes it, which then needs to be replenished. This process occurs by a standard glycogen synthesis pathway that does not involve the same mechanism of amplification.