Methods to match high-intensity interval exercise intensity in hypoxia and normoxia – A pilot study

Yanchun Li; Jia Li; Muhammed M. Atakan; Zhenhuan Wang; Yang Hu; Mostafa Nazif; Navabeh Zarekookandeh; Henry Zhihong Ye; Jujiao Kuang; Alessandra Ferri; Aaron Petersen; Andrew Garnham; David J. Bishop; Olivier Girard; Yaru Huang; Xu Yan

Journal of Exercise Science & Fitness (Jan 2022)

Methods to match high-intensity interval exercise intensity in hypoxia and normoxia – A pilot study

Yanchun Li,
Jia Li,
Muhammed M. Atakan,
Zhenhuan Wang,
Yang Hu,
Mostafa Nazif,
Navabeh Zarekookandeh,
Henry Zhihong Ye,
Jujiao Kuang,
Alessandra Ferri,
Aaron Petersen,
Andrew Garnham,
David J. Bishop,
Olivier Girard,
Yaru Huang,
Xu Yan

Affiliations

Yanchun Li: China Institute of Sport and Health Science, Beijing Sport University, Beijing, 100084, China
Jia Li: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia; College of Physical Education, Southwest University, Chongqin, China
Muhammed M. Atakan: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia; Division of Exercise Nutrition and Metabolism, Faculty of Sport Sciences, Hacettepe University, Ankara, 06800, Turkey
Zhenhuan Wang: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia
Yang Hu: China Institute of Sport and Health Science, Beijing Sport University, Beijing, 100084, China
Mostafa Nazif: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia
Navabeh Zarekookandeh: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia
Henry Zhihong Ye: School of Biological Sciences, Monash University, Melbourne, 3800, Australia
Jujiao Kuang: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia; Sarcopenia Research Program, Australia Institute for Musculoskeletal Sciences (AIMSS), Melbourne, 3021, Australia
Alessandra Ferri: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia
Aaron Petersen: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia
Andrew Garnham: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia
David J. Bishop: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia
Olivier Girard: School of Human Sciences, The University of Western Australia, Perth, 6009, Australia
Yaru Huang: Department of Physical Education and Art, China Agricultural University, Beijing, 100083, China; Corresponding author. Department of Physical and Art, China Agricultural University, Beijing, 100083, China.
Xu Yan: Institute for Health and Sport,(iHeS), Victoria University, Melbourne, 3011, Australia; Sarcopenia Research Program, Australia Institute for Musculoskeletal Sciences (AIMSS), Melbourne, 3021, Australia; Department of Medicine - Western Health, The University of Melbourne, Melbourne, 3021, Australia; Corresponding author. Institute for Health and Sport (iHeS), Victoria University, Melbourne, 3011, Australia.

Journal volume & issue: Vol. 20, no. 1
pp. 70 – 76

Abstract

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Background/Objectives: The aim of this study was to compare high-intensity interval exercise (HIIE) sessions prescribed on the basis of a maximal value (peak power output, PPO) and a submaximal value (lactate threshold, LT) derived from graded exercise tests (GXTs) in normoxia and hypoxia. Methods: A total of ten males (aged 18–37) volunteered to participate in this study. The experimental protocol consisted of a familiarization procedure, two GXTs under normoxia (FiO2 = 0.209) and two GXTs under normobaric hypoxia (FiO2 = 0.140), and three HIIE sessions performed in a random order. The HIIE sessions included one at hypoxia (HY) and two at normoxia (one matched for the absolute intensity in hypoxia, designated as NA, and one matched for the relative intensity in hypoxia, designated as NR). Results: The data demonstrated that there was significant lower peak oxygen uptake (V̇O2peak), peak heart rate (HRpeak), PPO, and LT derived from GXTs in hypoxia, with higher respiratory exchange ratio (RER), when compared to those from GXTs performed in normoxia (p < 0.001). Among the three HIIE sessions, the NA session resulted in lower percentage of HRpeak (85.0 ± 7.5% vs 94.4 ± 5.0%; p = 0.002) and V̇O2peak (74.1 ± 9.1% vs 88.7 ± 7.7%; p = 0.005), when compared to the NR session. HIIE sessions in HY and NR resulted in similar percentage of HRpeak and V̇O2peak, as well as similar rating of perceived exertion and RER. The blood lactate level increased immediately after all the three HIIE sessions (p < 0.001), while higher blood lactate concentrations were observed immediately after the HY (p = 0.0003) and NR (p = 0.014) sessions when compared with NA. Conclusion: Combining of PPO and LT derived from GXTs can be used to prescribe exercise intensity of HIIE in hypoxia.

Published in Journal of Exercise Science & Fitness

ISSN: 1728-869X (Print)
Publisher: Elsevier
Country of publisher: Hong Kong
LCC subjects: Geography. Anthropology. Recreation: Recreation. Leisure: Sports
Website: http://www.journals.elsevier.com/journal-of-exercise-science-and-fitness

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