Plasma vitamin C concentration was positively correlated with better strength, balance and overall fitness in a study involving 655 elderly Japanese women in their seventies. Researchers in Tokyo examined anthropometric measurements, physical performance, lifestyles, and plasma vitamin C concentrations of participants in this cross-sectional study. A total of 655 subjects who did not take supplements were analyzed. Plasma vitamin C concentration (8.9 (1.5) ?g/mL) was positively correlated with handgrip strength, length of time standing on one leg with eyes open, and walking speed, and inversely correlated with body mass index. These results suggest that vitamin C status may be associated with improved parameters of physical performance in elderly women.
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