The article speaks about thigh muscle cells showing increased protein breakdown after bicycling[0]. Does the effect only occur in the muscles used? If so, it se

The article speaks about thigh muscle cells showing increased protein breakdown after bicycling[0]. Does the effect only occur in the muscles used? If so, it seems that in order to get the benefit throughout the body, you'd need to deliberately exercise all muscle groups. [0] "...the researchers analyzed the effects of exercise on cells obtained from the thigh muscles of four human volunteers before and after vigorous biking. Following exercise, the proteasomes of these cells showed dramatically more molecular marks of enhanced protein degradation, including greater levels of cAMP."