Sex-based differences in the response of resistance-trained male and female athletes to resistance exercise

Abstract

Previous research on novice athletes has indicated between-sex differences in fatigability during low-intensity contractions. These studies are limited in their application, as they utilise single limb, single contraction type exercises. However, it is currently unclear whether these differences extend to resistance-trained athletes, particularly after a full-body resistance training session. The aim of this thesis was to observe the between-sex differences in muscle fatigability of resistance-trained male and female athletes. The pilot study was developed to establish whether the previously observed between-sex differences in the muscular fatigability of novice athletes extends to resistance-trained athletes. This study used a heavy knee extensor resistance exercise session, and found females had less muscular fatigue than males. Despite both sexes experiencing reductions in maximal voluntary torque, only males had reductions in rate of torque development even when between-sex differences in strength were corrected for. The results of this study informed the main study of this thesis, aimed to expose resistance-trained athletes to a 'real world' full-body resistance exercise session, and assess whether the between-sex differences observed in the pilot study continue to be present. Additionally, a longer period of assessment was included in the main study, to examine not only the immediate fatigue but also the recovery of the athletes following the session. This main study found both male and female athletes fatigued similarly after the full-body resistance exercise session, and all measurements had returned to baseline levels at 24 hours post exercise completion. The results of this study indicate between-sex differences can be observed in resistance-trained athletes when they are exposed to significant and localised fatigue. However, in the context of a full-body training session, these differences are no longer observed.

Date of Award	2018
Original language	English