Abstract：
:We examined the effects of active dehydration by exercise in a hot, humid environment on anaerobic muscular power using a test-retest (euhydrated and dehydrated) design. Seven subjects (age, 27.1 +/- 4.6 years; mass, 86.4 +/- 9.5 kg) performed upper and lower body Wingate anaerobic tests prior to and after a 1.5-hour recovery from a heat stress trial of treadmill exercise in a hot, humid environment (33.1 +/- 3.1C = 55.1 +/- 8.9% relative humidity) until a 3.1 +/- 0.3% body mass loss was achieved. Dehydration was confirmed by a significant body mass loss (P < 0.001), urine color increase (P = 0.004), and urine specific gravity increase (P = 0.041). Motivation ratings were not significantly different (P = 0.059), and fatigue severity was significantly (P = 0.009) increased 70% in the dehydrated compared to the euhydrated condition. Compared to the euhydrated condition, the dehydrated condition mean power was significantly (P = 0.014) decreased 7.17% in the upper body and 19.20% in the lower body. Compared to the euhydrated condition, the dehydrated condition peak power was significantly (P = 0.013) decreased 14.48% in the upper body and 18.36% in the lower body. No significant differences between the euhydrated and dehydrated conditions were found for decrease in power output (P = 0.219, power = 0.213). Our findings suggest that dehydration of 2.9% body mass decreases the ability to generate upper and lower body anaerobic power. Coaches and athletes must understand that sports performance requiring anaerobic strength and power can be impaired by inadequate hydration and may contribute to increased susceptibility to musculoskeletal injury.
journal_name
J Strength Cond Resjournal_title
Journal of strength and conditioning researchauthors
Jones LC,Cleary MA,Lopez RM,Zuri RE,Lopez Rdoi
10.1519/JSC.0b013e3181635ba5subject
Has Abstractpub_date
2008-03-01 00:00:00pages
455-63issue
2eissn
1064-8011issn
1533-4287pii
00124278-200803000-00018journal_volume
22pub_type
临床试验,杂志文章abstract：:This study evaluated the influence of cadence on the Young Men's Christian Association (YMCA) bench press test for predicting 1 repetition maximum (1RM) bench press test performance. Fifty-eight medical students (37 men, 21 women) were evaluated for anthropometric variables (age, height, weight, fat-free mass, and per...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：
更新日期：2002-08-01 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2019-01-01 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2018-11-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：
更新日期：2002-02-01 00:00:00
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journal_title：Journal of strength and conditioning research
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2020-04-10 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2019-05-24 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
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更新日期：2009-08-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/R-14964.1
更新日期：2005-08-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0b013e3181821a1a
更新日期：2008-11-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000003107
更新日期：2019-03-15 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0000000000000953
更新日期：2015-10-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
doi：10.1519/JSC.0b013e3182503807
更新日期：2013-01-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2020-10-05 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2014-02-01 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2012-05-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
doi：10.1519/JSC.0b013e3181ddb0ab
更新日期：2010-07-01 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2013-10-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2012-06-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2010-03-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
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更新日期：2020-01-01 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2003-02-01 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2019-01-01 00:00:00
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journal_title：Journal of strength and conditioning research
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更新日期：2013-03-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2019-10-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章
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更新日期：2020-10-01 00:00:00
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journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,随机对照试验
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更新日期：2016-01-01 00:00:00
abstract：:The purpose of this study was to establish validity and reliability evidence for the medicine ball throw test for kindergarten students, an underrepresented group in the literature. The subjects were 105 students, 5-7 years old, BMI 17.44 +/- 3.17 kg x m(-2), 43% female and 57% male. Intraclass correlation coefficient...
journal_title：Journal of strength and conditioning research
pub_type： 杂志文章,多中心研究
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更新日期：2008-11-01 00:00:00
abstract：:The nature of multiple sprint sports such as soccer, hockey, and rugby is such that deceleration plays an important part in the movement patterns of players during a game and training. The purpose of this study was to investigate the effect of deceleration on fatigue during repeated sprint efforts. A group of 18 elite...
journal_title：Journal of strength and conditioning research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1519/1533-4287(2004)18<579:TEOERD>2.0.CO;2
更新日期：2004-08-01 00:00:00
