Heart rate and energy expenditure during extravehicular activity at different times of day

Степанова, С. І.; Katuntsev, V. P.; Osipov, Yu. Yu.; Galichi, V. A.

doi:10.1134/s0362119715070245

Cited by 1 publication

(3 citation statements)

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“…Space mission success and safety are strongly dependent on the optimal physical, motor, and cognitive performance of space travelers (e.g., astronauts, cosmonauts, or taikonauts) to minimize the risk for severe errors (Katuntsev et al, 2009; Stepanova et al, 2015). This is especially relevant during extravehicular activities (EVAs), one of the most challenging and high-risk tasks in space (Bolender et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…EVA training and real EVA performed in the past required an increased cardiovascular demand and different levels of exercise intensity (Katuntsev et al, 2009; Paul, 2012; Stepanova et al, 2015; Toscano et al, 2004). Because it is well known from a series of studies that physical exercise interacts with human behavior, such as motor and cognitive performance (Chang et al, 2012; McMorris, 2016b), human performance during EVA might also be affected.…”

Section: Introductionmentioning

confidence: 99%

“…EVA training and real EVA performed in the past required an increased cardiovascular (Katuntsev et al, 2009;Paul, 2012;Stepanova et al, 2015;Toscano et al, 2004). Because it is well known from a series of studies that physical exercise interacts with human behavior, such as motor and cognitive performance (Chang et al, 2012;McMorris, 2016b), human performance is relevant for the successful completion of tasks and error prevention in microgravity to consider the increased physical demand occurring during EVA.…”

Section: Introductionmentioning

confidence: 99%

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Exercise-Related Effects on Executive Functions During a Simulated Underwater Extravehicular Activity

et al. 2021

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Objective Investigation of cognitive performance during extravehicular activities (EVAs) in a space-analog setting. Background EVAs performed by humans in microgravity on the International Space Station (ISS) call for high cognitive performance during upper-body workload. Higher cardiovascular demands interact with cognitive performance, but no knowledge exists about EVA’s special requirements. This study simulates EVA-training underwater to investigate its effects on the executive functions inhibition and switching. Method In a counterbalanced crossover design, 16 divers (age: 28 ± 2.4 years; eight females) performed two conditions (i.e., EVA vs. Inactivity [INACT]) in 3–5 m submersion (diving gear; not in a space-suit). EVA included 30 min of moderate-, followed by 30 min of high-intensity upper-body exercise intervals, paired with EVA-specific cognitive-motor tasks. INACT included no exercise in submersion and neutral buoyancy. Both conditions included cognitive testing at pre, mid (after the first 30 min), and post (after the second 30 min) on a tablet computer. Reaction times (RTs) and response accuracy (ACC) were calculated for both tasks. Results ACC was significantly lower during EVA compared with INACT for inhibition (post: p = .009) and switching (mid: p = .019) at post ( p = .005). RTs for inhibition were significantly faster during EVA ( p = .022; ηp 2 = 0.320). Conclusion Specific physical exercise, intensity, duration, and tasks performed during the EVA might differently affect the exercise-cognition interaction and need further investigation, especially for future long-term space travel. Application Future research might serve to improve mission success and safety for EVAs and long-term space travel.

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Section: Introductionmentioning

confidence: 99%