Figure 4.

Dietary restriction of phosphate prevents the loss of muscle strength in old mice. Five‐month‐old mice (Young), 24‐month‐old mice fed with a standard diet (Old‐24m) and 24‐month‐old mice fed with a low‐phosphate diet (Old‐LowP) were evaluated. Electrical stimulation of the peroneal nerve was performed in all groups. Twitch force (A), tetanic force (B) and fatigue resistance (C) were measured after nerve stimulation. The graphs represent the box plot from values obtained from 13 young mice, 13 old mice and 14 old mice fed with the hypophosphataemic diet. *P < 0.05 versus Young, ^# P < 0.05 versus Old‐24m.