Effect of Constraint Loading on the Lower Limb Muscle Forces in Weightless Treadmill Exercise

Figure 6

Muscle forces at weightlessness compared with those at gravity. (a) The curves of the five muscle forces at constraint loading mode 3; (b) the percent change in muscle forces based on the forces at gravity. The red curve is the postflight muscle concentric strengths compared with the preflight from NASA report [28]. The results were in agreement with the muscle atrophy observed in the astronaut.

(a)

(b)