Key result
Heat exposure (35 °C) elevated skin temperature by ~3 °C and attenuated motor control performance during motor skill acquisition compared to a thermoneutral environment (25 °C).
Why the study?
It was unknown whether heat exposure attenuates motor control performance and learning and blunts cardiovascular and thermoregulatory responses to visuomotor accuracy tracking tasks.
Does heat exposure attenuate motor control performance and blunt cardiovascular and thermoregulatory responses during visuomotor accuracy tracking tasks in healthy young adults?
Does heat exposure attenuate motor control performance and blunt cardiovascular and thermoregulatory responses during visuomotor accuracy tracking tasks in healthy young adults?
Heat exposure exacerbates motor control performance and blunts cardiovascular responses during motor skill acquisition, though these alterations do not persist into the retention phase.
Answers are grounded in this paper and cite their sources.
May impair visuomotor skill acquisition in heat; leaves open translation to patients or occupational performance.
This study aimed to determine whether heat exposure attenuates motor control performance and learning, and blunts cardiovascular and thermoregulatory responses to visuomotor accuracy tracking (VAT) tasks. Twenty-nine healthy young adults (22 males) were divided into two groups performing VAT tasks (5 trials × 10 blocks) in thermoneutral (NEUT: 25 °C, 45% RH, n = 14) and hot (HOT: 35 °C, 45% RH, n = 15) environments (acquisition phase). One block of the VAT task was repeated at 1, 2, and 4 h after the acquisition phase (retention phase). Heat exposure elevated skin temperature to ~3 °C with a marginally increased core body temperature. VAT performance (error distance of curve tracking) was more attenuated overall in HOT than in NEUT in the acquisition phase without improvement in magnitude alteration. Heat exposure did not affect VAT performance in the retention phase. The mean arterial blood pressure and heart rate, but not for sweating and cutaneous vascular responses to VAT acquisition trials, were more attenuated in HOT than in NEUT without any retention phase alternations. We conclude that skin temperature elevation exacerbates motor control performance and blunts cardiovascular response during the motor skill acquisition period. However, these alternations are not sustainable thereafter.
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Aoki et al. (2022) studied Healthy (n=29). Heat exposure vs. Thermoneutral environment (25 °C, 45% RH) was evaluated on Visuomotor accuracy tracking (VAT) performance. Heat exposure (35 °C) elevated skin temperature by ~3 °C and attenuated motor control performance during motor skill acquisition compared to a thermoneutral environment (25 °C).
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