2. Isotonic exercise is an exercise by folding their body parts such as arms, legs up and down, stretching the muscle contraction. Ideal for athletes who need strong like Luke getting seated (sit-up) Witphuen, etc.
2. Isotonic exercise is to exercise with the bent, folded parts such as arms, legs up down the stretch, causing muscle contractions. Ideal for athletes who want the stronger the pull sit (sit-up) pushups etc.
2. Isotonic exercise is exercise by bend folding organs such as the arms, legs, up and down the muscle was born การยืด shrink. Suitable for athletes to strength such as feed of sit ups, (sit-up).