By comparison, to give you a “feel” for these numbers I will give you some examples of well-known athletes (when they were in their prime) and what body fat percentages they had. Michael Jordan at his peak was under 5% body fat; Mike Tyson was also under 5%. Top level bodybuilders like Jay Cutler have around 3 to 4% body fat when they ready for a show. Thus, you get my point. Most of us will never even flirt with fewer than 5% body fat. The national average for North America is high 20’s for women and mid 20’s for men. This is not to be confused with obesity rates.
Common testing for muscular endurance can be dynamic (the ability to repeat contractions) or static (the ability to sustain a contraction). Dynamic tests would be to see how many push-ups or sit-ups, for example, a person can complete in a designated amount of time (. 30 seconds, a minute, or maybe longer). Or, without being timed, the person could do as many repetitions of the exercise as they could until they couldn’t do anymore. An example of a static test would be the flexed-arm hang whereby the performer hangs on a bar until the designated stopping time or until they become too weak to continue hanging.
Pollock, M. L., Gaesser, G. A., Butcher, J. D., Després, J. P., Dishman, R. K., Franklin, B. A., … Garber, C. E. (1998). ACSM position stand: the recommended quantity and quality of exercise for developing and maintaining cardiorespiratory and muscular fitness, and flexibility in healthy adults. Med Sci Sports Exerc, 30 (6), 975-991. Retrieved from https:///samples/1430857468221ACSM%20Position%20Stand_%20The%20Recommended%20Quantity%20and%20Quality%20of%20Exercise%20for%20Developing%20and%20Maintaining%20Cardiorespiratory%20and%20Muscular%20Fitness,%20and%20Flexibility%20in%20Healthy%20Adults_.pdf