Chapter 1, Problem 4AYK

Which one of the following statements is the best description of a motor unit?     A single α-motor neuron with all of the muscle fibres it connects to.     The activity in a single muscle fibre.     The activity in a single muscle.     A single action potential conducted along a motor axon.

List and describe the primary ways that a healthy body composition will make you both function better and feel better during your campus life.  What are ways to improve your body composition. List three or four elements of functional (neuromotor) training and give two examples of exercises or movements you can incorporate into your functional fitness training program.

Place the activity at its appropriate place on the exercise pyramid. Flexibility exercise (2-3 days/week) Recreational activities (2-3 days/week) Aerobic exercise (3-5 days/week 20-60 minutes) Strength exercise (2-3 days/week, 8- 10 exercise, 1 set of 8-12 reps) Accumulate 30 minutes of physical activity most days of the week Do Sparingly UIF More

What is the difference between movement and physical activity? Give an example of an instance in which human movement does not meet the technical definition of physical activity.

Which of the following statements are true? Multiple Choice Muscles work in antagonistic pairs because if one muscle shortens during contraction, the opposing muscle across the joint must relax. Muscles work in antagonistic pairs because tendons lengthen during contraction. Muscles work in antagonistic pairs because muscles lengthen during contraction. Muscles work in antagonistic pairs because if one muscle pushes during contraction, the opposing muscle across the joint must pull.

High intensity exercise has recently been advocated by the military for which of the following reasons? It increases aerobic fitness It simulates combat tasks It is a modality of active recovery It is an introduction to a non-sedentary lifestyle

PHYSICAL EDUCATION Introduction Body of research Conclusion

Muscle physiology: You are in the gym and doing strength training. You feel in good shape and should try to break personal records in squats. You place the bar on your back and start to take in, ie. your motor neurons begin to send action potentials through all your motor units to the thigh muscles. Task 1: Describe how these action potentials lead to your muscles contracting. The description must follow the correct sequence order and you must explain what happens and why. Task 2: What is the contraction called when you a) bend down and b) are in good shape and can generate more force than what the bar weighs c) stay standing in a and the same position without being able to push yourself up while standing?

Why is it important to know the proper way of conducting physical activities and exercises?