Maximal voluntary torque (MVT) can be impaired by hyperthermia due to a reduction in the central nervous system’s capacity to voluntarily drive (neural drive) the available force capacity of the muscle (1). Rate of torque development (RTD) is a functionally relevant measure of neuromuscular function, with neural drive and the intrinsic contractile properties of the muscle key determinants of RTD (2). Heat acclimation (HA) can offer beneficial physiological and performance benefits (3); however, it is unclear whether these benefits are seen in the neuromuscular system, specifically the neural and contractile determinants of RTD. Ten participants (5 males, 5 females) visited the laboratory on 13 consecutive days to complete two experimental trials pre- and post- 10 days of isothermic HA, to a target Tre of ~39 °C. In each experimental trial participants completed a neuromuscular protocol at Tre ~37 °C and ~39 °C. The neuromuscular protocol assessed MVT and voluntary RTD. RTD was assessed at 50, 100 and 150 ms from contraction onset (T50, T100 and T150). To quantify neural drive, neural efficacy (NE), which is the ratio between voluntary and evoked torque at 50 ms, was compared. Involuntary Octets (300 Hz) were evoked at rest to assess peak torque (PT), peak RTD (pRTD) and time to peak to tension (TPT). Both experimental trials and HA sessions were conducted in the same environmental conditions (50 °C, 50 % relative humidity). The  mean ± SD of each data set were determined and compared by Two and One-way repeated measures ANOVA. All neuromuscular assessment data are presented in Table 1. HA decreased resting Tre (-0.5 °C; p<0.005), mean HR (-6 beat/min; p<0.005) and increased sweat rate (+0.6 L/hr; p0.05) or HA (p>0.05) and did not have an interaction effect (p>0.05). Participants produced similar neural drive, evidenced by NE, at both Tre (p=0.92) and this did not change following HA (p=0.99), with no interaction effect (p=0.75). There was a main effect of Tre (p0.05) or interaction effects (p>0.05) were observed. These data show that HA elicited physiological changes indicating successful adaptation to the heat. Maximal and rapid torque production were not effected by a rise in rectal temperature and this was similar following 10 days of HA. The intrinsic contractile properties of the muscle were greater when participants were hotter but also did not change following HA. These data suggest the beneficial physiological adaptations associated with HA do not confer any benefit to the neuromuscular system.