Is NIRS-derived skeletal muscle oxidative capacity correlated with aerobic fitness and independent of sex?
NIRS is a reliable, sex-independent tool for measuring skeletal muscle oxidative capacity that correlates well with established indices of aerobic fitness.
Near-infrared spectroscopy (NIRS) can be used to measure skeletal muscle oxidative capacity. Here, we demonstrated that NIRS-derived skeletal muscle oxidative capacity of the vastus lateralis was independent of sex, reliable across and within days, and correlated with maximal and submaximal indices of aerobic fitness, including maximal oxygen uptake, lactate threshold, and respiratory compensation point. These findings highlight the utility of NIRS for investigating skeletal muscle oxidative capacity in females and males.
Beever et al. (Thu,) studied this question.