To measure muscular strength, the relevant exercises from your list are:
- Push-ups: This exercise primarily measures upper body muscular strength, specifically the strength of the chest, shoulders, and triceps.
The other options are not directly focused on measuring muscular strength:
- P.A.C.E.R: This is a cardiovascular endurance test and does not measure muscular strength.
- Sit and reach: This flexibility test measures hamstring and lower back flexibility but does not assess muscular strength.
- Curl-ups: While this exercise does engage the abdominal muscles and can indicate some level of muscular endurance, it is more of a measure of muscular endurance than overall strength.
So the only exercise from the list that directly measures muscular strength is push-ups.