Effects of a 5-day hypoxic training on anaerobic and aerobic capacities of elite female 400-m runners
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- Yamanaka Ryo
- Niigata Agro-Food University
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- Tanji Fumiya
- Tokai University Japan Institute of Sports Sciences
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- Ohnuma Hayato
- Kansai University of Social Welfare Japan Institute of Sports Sciences
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- Ando Ryosuke
- Japan Institute of Sports Sciences
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- Maemura Hirohiko
- University of Tsukuba
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- Suzuki Yasuhiro
- Japan Institute of Sports Sciences
Bibliographic Information
- Other Title
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- 5日間の低酸素トレーニングが日本トップレベル女子400m走者の無酸素性及び有酸素性能力に及ぼす影響
- 5ニチカン ノ テイサンソ トレーニング ガ ニホン トップレベル ジョシ 400m ソウシャ ノ ムサンソセイ オヨビユウサンソセイ ノウリョク ニ オヨボス エイキョウ
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Description
Anaerobic and aerobic capacities are needed to enhance the performance of 400-m runners. We previously demonstrated that a 7-day hypoxic training consisting of high-intensity interval training and endurance training at submaximal load improved the exercise performance (time to exhaustion) as well as anaerobic and aerobic capacities of female 400-m runners. Time to exhaustion and capacities in a shorter training period could be beneficial for several athletes, but this has not been examined. Therefore, the purpose of this study was to investigate whether a 5-day of hypoxic training would improve duration time (time to exhaustion) and the anaerobic and aerobic capacities of elite female 400-m runners. Seven elite female 400-m runners (Personal Best time: 53.9±1.2 s) were trained for 5 days (6 sessions). Anaerobic and aerobic capacity tests were performed on the treadmill before (Pre) and after (Post) the intervention. The indices of anaerobic capacity were maximal accumulated oxygen deficit (MAOD) and maximal blood lactate concentration (Lamax). The index of aerobic capacity was the maximal oxygen uptake (VO2max). All subjects were trained in a normobaric hypoxic room (FIO2=14.4%). The training consisted of high-intensity interval training (five 30-s all-out pedaling) and endurance training (30-min incremental running and 30-min steady pedaling). After the intervention, duration time significantly increased in both anaerobic (Pre: 131±11 sec, Post: 149±15 sec, p = 0.02) and aerobic (Pre: 5.2±1.2 min, Post: 6.0±1.2 min, p < 0.01) tests. MAOD tended to increase (Pre: 54.9±6.3 ml/kg, Post: 58.4±6.8 ml/kg, p = 0.05) while the Lamax significantly increased (Pre: 19.5±3.3 mmol/l, Post: 21.5±2.6 mmol/l, p = 0.04). On the other hand, the VO2max (Pre: 51.4±5.3 ml/kg/min, Post: 53.1±5.0 ml/kg/min) did not significantly change. This study suggests that 5-days of hypoxic training was effective for enhancing duration time of anaerobic and aerobic tests, and also anaerobic capacity in well-trained female 400-m runners.
Journal
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- Journal of High Performance Sport
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Journal of High Performance Sport 8 (0), 19-34, 2021
Japan Institute of Sports Sciences, Japan Sport Council
