Syllabus

Week 1. Glycogen Storage, Depletion, and Repletion

Week 1. Glycogen Storage, Depletion, and Repletion

Men and women store carbohydrates – renamed glycogen – primarily in muscles.

On a so-called normal carb diet (CHO diet) a woman stores almost 300g total glycogen in her body and a man stores 400g total.

The liver is like a spare gasoline tank for the body to store carbs; it stores approximately 50g glycogen in both men and women.

The main reason for storing glycogen in muscles is for when you exercise hard – your muscles cells have stored fuel on-site – so there is no delay to deliver fuel and sustain high intensity exercise.

HOW IS GLYCOGEN MADE IN THE BODY?

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WEEK 2. Glycolysis Visualized

WEEK 2. Glycolysis Visualized

Acid Production Graphed in MPH Instead of using the blue-yellow-red colored bar to indicate intensity, the graph below uses speeds ran by humans in mph - from rest up to running the world's fastest - 27.8 mph by Usain Bolt. The bold face type lists the world record...

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Week 3. Fitness Lab – Lactate Testing

Week 3. Fitness Lab – Lactate Testing

The Physical Rules of Nutrition, Metabolism, and Exercise Science Home   All lectures Meet in the Fitness Lab Read the two sections below and be prepared to: Workout and have your lactate tested. Record the measurements in your workbook for week 3. Rather than perform...

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Week 10. Aerobic Metabolism Part 1

Week 10. Aerobic Metabolism Part 1

"How does a fetus breathe?" This is a trick question; I realize a fetus is not breathing like you and I. Think about how an embryo uses oxygen and you may see it 'breathes' no differently in the womb as we all do once born into this world. If you think about how an...

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Week 13. Metabolism of Mice and Men, Birds and Elephants

Week 13. Metabolism of Mice and Men, Birds and Elephants

Birds, mice, and other tiny mammals use much more O2 than humans do (adjusted for body weight).

This greater metabolic rate converts a greater proportion of “Total Energy Out” into “Wasted Heat” and is especially critical for surviving cold temperatures.

In order to sustain a very high rate of metabolic combustion and heat production compared to humans, birds must eat up to 17x or more the quantity of energy than a human, relatively. Despite eating so many calories, tiny animals do not gain mass because they dissipate heat extremely quickly.

This explains why a bird ‘going to bed’ on an empty stomach dies over a cold bitter night… lack of calories reduce heat production.

Conversely, the bodies of huge animals like elephants conserve heat because their size prevents rapid radiation of energy. Hence, the elephants huge ears serve as radiators to dissipate the heat.

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Week 15. Your Brain on Collision Sports

Week 15. Your Brain on Collision Sports

Revisiting the Metabolic Model:   Flow of Energy, Blood, and Material. Spatial Sense of Anatomy and Holographic Storage of Information   ecture Overview: Main topic is concussions, but includes a discussion I had with a client last night...

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Elite athletes who participate in endurance sports have a higher risk of heart rhythm problems than recreational athletes, a new Swedish study finds. And those who train for long periods also face an increased risk compared with those who train for less time.

“This study shows, that even though physical activity is generally healthy, athletes committed to endurance sports at elite level have higher risk of suffering from a heart rhythm disorder,” said study researcher Dr. Kasper Andersen, a cardiologist at Uppsala University in Sweden.

Earlier studies have reported a higher incidence of some heart rhythm disorders (or arrhythmias) among endurance sport athletes, but these studies have been small.

In the new study, Andersen and colleagues examined data from nearly 47,500 athletes who participated in a cross-country skiing race in Sweden between 1989 and 1998. The race, called the Vasaloppet, is 56 miles (90 kilometers) long and takes place in March each year. Participants range from elite skiers to recreational athletes, and their finishing time is closely related to how much they have trained, the researchers said.

The researchers compared each participant’s finishing time with the winning time that year, and counted the number of races completed by the participant (a measure of how long they had been training).

Compared with those who had completed the race once, those who had completed it seven or more times had 29 percent higher risk of developing a heart arrhythmia.

Further, elite athletes, who had finished the race within 1.6 times the winning time had a 37 percent higher risk of arrhythmias than recreational athletes , who finished in more than 2.4 times the winning time. This association was stronger among athletes less than 45 years old.

 

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