Question

How long does the ATP-PC system last? What is the primary muscle fiber involved and at what intensity? Example athlete? Utilization?

a) Lasts for 60-90 seconds, involves Type I muscle fibers, high intensity, sprinters utilize it
b) Lasts for several hours, involves Type II muscle fibers, low intensity, long-distance runners utilize it
c) Lasts for 10-15 seconds, involves Type II muscle fibers, very high intensity, weightlifters utilize it
d) Lasts for 2-3 minutes, involves Type I muscle fibers, moderate intensity, swimmers utilize it

Answer 1

The ATP-PC system lasts for 8-10 seconds and is utilized by weightlifters and short-distance sprinters. It involves Type II muscle fibers and is characterized by high-intensity activity.

Step-by-step explanation:

The ATP-PC system, also known as the phosphagen system, lasts for about 8-10 seconds. It involves the use of creatine phosphate to rapidly produce ATP for short bursts of high-intensity activity. This system is primarily utilized by weightlifters and short-distance sprinters. It involves Type II muscle fibers, which are fast-twitch fibers that can generate high levels of tension but fatigue quickly.