Concept explainers
To review:
To suggest a strategy for the improvement of one’s performance in a long-distance marathon.
Given:
In the given study, trained cyclists were asked to perform strenuous exercises until fatigued (Table 1). Each of them was given placebo in the interval of 20 minutes. The next day, each of them was given glucose water, after every 20 minutes. The time to fatigue, the muscle glycogen levels, the blood free-fatty acid levels, and the carbohydrate oxidation rate in the blood were measured.
Table 1: Study performed on trained cyclists about strenuous exercises.
Treatment | At 0 hours, the muscle glycogen levels | At the end of 2 hours, the muscle glycogen levels | At the end of 3 hours, the muscle glycogen levels | At the end of 4 hours, the muscle glycogen levels | The time to fatigue |
Placebo (flavored water) | 163±13 | 60±9 | 37±5 | No data | 3.02±0.19 |
Glucose solution | 173±11 | 71±11 | 44±12 | 39±8 | 0.33 |
Introduction:
When an athlete is training for endurance exercise, they undergo repeated muscle contractions. There is a limit on how long the exercise can be carried on, depending on the time it takes for the muscles to get fatigued. One important factor that leads to the sustainability of muscles activity in such long duration exercises is the kind of
Want to see the full answer?
Check out a sample textbook solutionChapter 47 Solutions
Life: The Science of Biology
- Which of the following is an example of an assisted functional activity?arrow_forwardDesign a speed and agility program for a high school boys soccer team in preseason training. Be sure to explain why you selected the specific components of your program.arrow_forwardIn your conclusions discuss what else EMG analysis could be used for in rehabilitation as well ashow the concepts of fatigue and myoelectric thresholds should be incorporated into FES system design.arrow_forward
- Exercise increases MAP. True or Falsearrow_forwardDeliberately shifting equilibrium in the body provides some advantages. Explain why some athletes train at high altitudes.arrow_forwardDistance A Time Jen left her house and drove to college in the morning, as shown in the accompanying graph. On her drive to college she realized that she forgot her bookbag and had to return home before driving back to college for a 3 hour class. What 2 points represent Jen being in her house? O A and B OA and C O B and C OB and Darrow_forward
- Conflicting Claims About the Effect of Exercise on the Rate of Clothespin Squeezing Student A claims that a person will be able to squeeze a clothespin more times in a minute if the person exercises first. Student A suggests that exercising produces a faster pulse rate, which indicates that the blood is getting to the muscles faster. Student B claims that a person will be able to squeeze the clothespin more times in a minute if the person does not exercise first. Student B suggests that exercise takes energy away from the muscles, and a person who has been resting will have more energy. Which of the two students do you agree with? How could you find out for sure which claim is correct ?arrow_forwardRead over the following article from the New York Times It describes a study in which researchers look at the changes in different types of molecules during exercise. For this question, complete the following: Briefly summarize the article Provide information about the study as to what they were looking at and any results or findings. Discuss your interest in a exercise system or response described in the article and outline how you would find more information on this topic.arrow_forwardA person who lives close to sea level and usually goes jogging in the morning. When that person runs at a place like Denver with high elevation she notices she isn't able to run as fast up in Denver as she usually does at home. She knows it is colder and there is less oxygen at high elevation than there is at his home. Why she feel like she didn't have the energy to keep up with her usual pace. a. her body wasnt able to begin glycolysis due to lack of oxygen b. her body was producing less ATP due to lack of oxygen c. her body wasnt getting enough external heat inputarrow_forward
- During vigorous effort in muscle cells, ATP stores are quickly depleted. However, creatine phosphate can donate a phosphate to regenerate ATP to sustain effort. In other words, creatine phosphate has a higher phosphoryl transfer potential than ATP? a. False b. Truearrow_forwardDescribe a simple Feldenkrais exercise that takes less than 5-minute and can be done while lying down. Please provide easy-to-follow steps.arrow_forward"During old age due to decreased muscle due to atrophy, which can be expected as a possible scenario?" a Increased frequency of urinary infection b Increase in exercise tolerance c decrease in fatigue d decrease in accidentsarrow_forward
- Lifetime Physical Fitness & WellnessHealth & NutritionISBN:9781337677509Author:HOEGERPublisher:Cengage