Abstract：
:We tested the hypothesis that the initial heart rate (HR) response at the onset of maximal handgrip contraction is altered after training. 17 volunteers (nine trained and eight controls) performed ten intermittent static handgrip contractions with maximal effort, alternating between 15-s contractions and 15-s pauses. High-intensity static handgrip training was performed using the nondominant arm alone for 4 weeks. Handgrip force (HGF) and HR were analyzed for the initial 7 s of every static handgrip exercise. Peak HR (pre-training: 94.5 +/- 12.8 beats/min; post-training: 89.7 +/- 10.2 beats/min, p < 0.05) decreased. However, the magnitude of HR change at the onset of contraction remained constant (pre-training: 23.0 +/- 7.7 beats/min; post-training: 25.7 +/- 6.5 beats/min, p = 0.0767), while the HR responses in the subsequent bouts increased after training (p < 0.001). The resting HR decreased (pre-training: 71.5 +/- 9.3 beats/min; post-training 64.1 +/- 5.7 beats/min, p < 0.05). Maximal HGF increased by 11.1 % in trained arms and by 8.7 % in untrained arms, although an increase in maximal forearm girth was only observed in the trained arm (2.0 %, p < 0.0001). Although high-intensity training modulated the abrupt HR responses, the magnitude of the response remained unchanged at the onset of maximal forearm contraction and the resting HR significantly decreased.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Hachiya T,Blaber AP,Aizawa S,Saito Mdoi
10.1055/s-2007-989373subject
Has Abstractpub_date
2008-08-01 00:00:00pages
646-51issue
8eissn
0172-4622issn
1439-3964journal_volume
29pub_type
杂志文章abstract：:Total body water (TBW) and water turnover rates (WTR) of six competitive male cyclists (CG) and six age-matched sedentary men (SG) were determined using deuterium oxide dilution and elimination. During the 7 day study, individuals in the CG cycled daily outside on average 50 (range 12-146) km at an average speed of 29...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2001-15912
更新日期：2001-04-01 00:00:00
abstract：:We compared 35 prepubertal girls, 9 artistic gymnasts and 13 rhythmic gymnasts with 13 nonphysically active controls to study the effect of gymnastics on bone and muscle mass. Lean mass, bone mineral content and areal density were measured by dual energy X-ray absorptiometry, and physical fitness was also assessed. Th...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2006-924397
更新日期：2007-05-01 00:00:00
abstract：:The purpose of this study was to determine whether a player's physical impairment or activity profile was related to the amount of thermal strain experienced during wheelchair rugby match play. 17 elite wheelchair rugby players played a competitive match, whilst activity profiles, measures of core and skin temperature...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0042-121263
更新日期：2017-03-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-973001
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2002-35069
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abstract：:Signs of overuse after intense muscular exertion are well described in adults, while little research has been conducted in children. The aim of the study was to investigate some indirect markers of muscle damage in 13 years old boys following two different protocols of one-leg stepping exercise to exhaustion. This ste...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1055/s-2007-971101
更新日期：1999-02-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024644
更新日期：1992-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0043-117178
更新日期：2017-11-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1055/s-2002-19273
更新日期：2002-01-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-971879
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025752
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0770-6093
更新日期：2019-01-01 00:00:00
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journal_title：International journal of sports medicine
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journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0032-1331757
更新日期：2013-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2007-972863
更新日期：1996-07-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024712
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1025024
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：1992-05-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972847
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journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
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更新日期：2013-11-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：2013-03-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：2020-07-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1025052
更新日期：1988-12-01 00:00:00
abstract：:This study sought to (a) compare and contrast the effect of 2 commonly used cryotherapy treatments, 4 min of -110 °C whole body cryotherapy and 8 °C cold water immersion, on knee skin temperature and (b) establish whether either protocol was capable of achieving a skin temperature (<13 °C) believed to be required for ...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0033-1343410
更新日期：2014-01-01 00:00:00
abstract：:Serum zinc was determined using atomic absorption spectrophotometry in 160 training athletes (57 females) in the morning at rest. In 23.3% of the male and 43% of the female athletes, serum Zn was lower than the limit accepted for the normal range (75 microgram/dl or 11.5 mumol/l). The average serum Zn (96.7 +/- 12.6 m...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1034599
更新日期：1981-08-01 00:00:00
