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  • 标题:The Effect of Acute and Chronic Exposure to Hypobaric Hypoxia on Loaded Squat Jump Performance
  • 本地全文:下载
  • 作者:Amador García-Ramos ; Paulino Padial ; Blanca De la Fuente
  • 期刊名称:Journal of Human Kinetics
  • 印刷版ISSN:1640-5544
  • 电子版ISSN:1899-7562
  • 出版年度:2017
  • 卷号:56
  • 期号:1
  • 页码:149-158
  • DOI:10.1515/hukin-2017-0032
  • 语种:English
  • 出版社:Walter de Gruyter GmbH
  • 摘要:The present study aimed (1) to compare loaded squat jump performance after an acute and chronic exposure to a moderate natural altitude between normoxia and hypobaric hypoxia conditions, and (2) to analyze the effect of an altitude training camp on loaded jump squat development. Sixteen male swimmers (17.1 ± 0.8 years) took part in a 17-day training camp at a natural moderate altitude. They were randomly tested in counterbalanced order on days 1 and 3 in normoxia and hypoxia (pretest) and on days 15 and 17 again in normoxia and hypoxia (posttest). The peak velocity reached with loads equivalent to 25%, 50%, 75% and 100% of swimmers’ pretest body weight in the loaded squat jump exercise was the dependent variable analyzed. An overall increase in peak velocity during the test performed in hypoxia of 6.5% in pretest (p < 0.001, ES = 0.98) and 4.5% in posttest (p < 0.001, ES = 0.81) was observed. An overall increment in peak velocity of 4.0% considering the data for normoxia tests (p < 0.001, ES = 0.61) and 2.1% considering the data for hypoxia tests (p = 0.008, ES = 0.36) was achieved after the altitude training camp. These results highlight the beneficial effects of hypobaric hypoxia on jump performance after short and longer term exposure to a natural moderate altitude. The increase in loaded squat jump performance following the 17-day training camp suggests that altitude training could constitute a favorable stimulus in explosive strength.
  • 关键词:altitude training ; lower-limb muscular power ; linear velocity transducer ; swimmers
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