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Open AccessFeature PaperArticle

The Effects of High-Intensity Interval Exercise and Hypoxia on Cognition in Sedentary Young Adults

1
Faculty of Education, University of Macau, Macao, China
2
Department of Physical Education, Huzhou University, Huzhou 313000, China
3
Department of Health, Exercise Science and Recreation Management, School of Applied Sciences, The University of Mississippi, Oxford, MS 38677, USA
4
Department of Health Promotion and Physical Education, School of Health Sciences and Human Performance, Ithaca College, Ithaca, NY 14850, USA
5
Lifestyle (Mind-Body Movement) Research Center, College of Sports Science, Shenzhen University, Shenzhen 518060, China
6
Sports Science Research Center, Beijing Sport University, Beijing 100084, China
7
School of Physical Education and Sports, Macao Polytechnic Institute, Macao, China
*
Authors to whom correspondence should be addressed.
Medicina 2019, 55(2), 43; https://doi.org/10.3390/medicina55020043
Received: 4 January 2019 / Revised: 7 February 2019 / Accepted: 8 February 2019 / Published: 10 February 2019
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PDF [456 KB, uploaded 22 February 2019]
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Abstract

Background and Objectives: Limited research has evaluated the effects of acute exercise on cognition under different conditions of inspired oxygenation. Thus, the purpose of this study was to examine the effects of high-intensity interval exercise (HIE) under normoxia (inspired fraction of oxygen (FIO2): 0.209) and moderate hypoxia (FIO2: 0.154) on cognitive function. Design: A single-blinded cross-over design was used to observe the main effects of exercise and oxygen level, and interaction effects on cognitive task performance. Methods: Twenty inactive adults (10 males and 10 females, 19–27 years old) performed a cognitive task (i.e., the Go/No-Go task) before and immediately after an acute bout of HIE under normoxic and hypoxic conditions. The HIE comprised 10 repetitions of 6 s high-intensity cycling against 7.5% body weight interspersed with 30 s passive recovery. Heart rate, peripheral oxygen saturation (SpO2) and rating of perceived exertion were monitored. Results: The acute bout of HIE did not affect the reaction time (p = 0.204, η2 = 0.083) but the accuracy rate decreased significantly after HIE under both normoxic and hypoxic conditions (p = 0.001, η2 = 0.467). Moreover, moderate hypoxia had no influence either on reaction time (p = 0.782, η2 = 0.004) or response accuracy (p = 0.972, η2 < 0.001). Conclusions: These results indicate that an acute session of HIE may impair response accuracy immediately post-HIE, without sacrificing reaction time. Meanwhile moderate hypoxia was found to have no adverse effect on cognitive function in inactive young adults, at least in the present study. View Full-Text
Keywords: cognitive function; Go/No-Go task; reaction time; response accuracy; peripheral oxygen saturation cognitive function; Go/No-Go task; reaction time; response accuracy; peripheral oxygen saturation
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Sun, S.; Loprinzi, P.D.; Guan, H.; Zou, L.; Kong, Z.; Hu, Y.; Shi, Q.; Nie, J. The Effects of High-Intensity Interval Exercise and Hypoxia on Cognition in Sedentary Young Adults. Medicina 2019, 55, 43.

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