NIRS-derived skeletal muscle oxidative capacity is correlated with aerobic fitness and independent of sex
Austin T. Beever, Thomas R. Tripp, Jenny Zhang, Martin J. MacInnis
Abstract
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.
Topics & Concepts
Aerobic capacitySkeletal muscleRespiratory compensationOxidative phosphorylationVO2 maxInternal medicineGastrocnemius muscleRespiratory exchange ratioLactate thresholdEndocrinologyVastus lateralis muscleChemistryAnaerobic exerciseBiologyMedicineHeart rateBiochemistryPhysical therapyBlood lactateBlood pressureCardiovascular and exercise physiologySports Performance and TrainingHeart Rate Variability and Autonomic Control