I’m pretty sure they included more than one independent variable.
Answer:
The muscles that make up the hamstring group are the semitendinosus, semimembranosus, and bicep femoris.
Explanation:
Answer:
More oxygen is also going to the muscles. This means the heart beats fewer times per minute than it would in a nonathlete. However, an athlete's heart rate may go up to 180 bpm to 200 bpm during exercise. Resting heart rates vary for everyone, including athletes.
Explanation:
