Abstract：
:The purpose of this study was to investigate the consequences of a high-speed boat transit on physical performance. Twenty-four Royal Marines were randomly assigned to a control (CON) or transit (TRAN) group. The CON group sat onshore for 3 h whilst the TRAN group completed a 3-h transit in open-boats running side-by-side, at 40 knots in moderate-to-rough seas, with boat deck and seat-pan acceleration recorded. Performance tests (exhaustive shuttle-run, handgrip, vertical-jump, push-up) were completed pre- and immediately post-transit/sit, with peak heart rate (HRpeak) and rating of perceived exertion (RPE) recorded. Serial blood samples (pre, 24, 36, 48, 72 h) were analyzed for creatine kinase (CK) activity. The transit was typified by frequent high shock impacts, but moderate mean heart rates (<45% HRpeak). The TRAN group post-transit run distance (-219 m, P < 0.01) and vertical-jump height (5%, P < 0.05) were reduced, the CON group showed no change. The TRAN group post-transit test RPE increased (P < 0.05), however, HRpeak was similar for each group (98%). Post-transit CK activity increased in the TRAN group up to 72 h (P < 0.01) and also, but less markedly, in the CON group (24 and 48 h, P < 0.05). Post-transit run and jump performances were reduced despite mean transit heart rates indicating low energy expenditure. The greater TRAN CK activity suggests muscle damage may have been a contributory factor. These findings have operational implications for Special Forces/naval/police/rescue services carrying out demanding, high-risk physical tasks during and immediately after high-speed boat transits.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Myers SD,Dobbins TD,King S,Hall B,Ayling RM,Holmes SR,Gunston T,Dyson Rdoi
10.1007/s00421-010-1765-3subject
Has Abstractpub_date
2011-09-01 00:00:00pages
2041-9issue
9eissn
1439-6319issn
1439-6327journal_volume
111pub_type
杂志文章,随机对照试验abstract：:Free radical production and high catecholamine levels are implicated in the modulation of Na(+), K(+)-ATPase, and Mg(2+)-ATPase activities. The aim of this study was to investigate the effect of the mode of delivery on the above-mentioned enzyme activities in maternal-neonatal erythrocyte membrane. Women with normal p...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-008-0744-4
更新日期：2008-07-01 00:00:00
abstract：:In order to test our hypothesis that muscle condition has an effect on the cognition of self-motion and consequently on the ventilatory response during exercise, six healthy subjects performed a moderate incremental exercise test (IET) on a cycle ergometer under two conditions [resistance exercise condition (REC) and ...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-010-1801-3
更新日期：2011-08-01 00:00:00
abstract：PURPOSE:The purpose of the present study was to investigate the age-related carbohydrate oxidation and glucose utilisation rate response during exercise at the same relative intensity under hyperglycaemia in aged and young males. METHODS:16 endurance-trained aged (n = 8; 69.1 ± 5.2 year) and young (n = 8; 22.4 ± 2.9 y...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-018-4019-4
更新日期：2019-01-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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journal_title：European journal of applied physiology
pub_type： 已发布勘误
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章,随机对照试验
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1722-1
更新日期：2011-06-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2009-11-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
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更新日期：2020-04-01 00:00:00
abstract：:The purpose of this study was to investigate the effects of 20 days bed-rest on the elastic properties of tendon structures of the human knee extensor muscles in vivo. Six healthy men carried out a 6 degrees head-down bed-rest for 20 days. Muscle volume and maximal voluntary contraction (MVC) torque of the quadriceps ...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210000309
更新日期：2000-12-01 00:00:00
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journal_title：European journal of applied physiology
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：European journal of applied physiology
pub_type： 临床试验,杂志文章
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更新日期：2011-07-01 00:00:00
abstract：:Equivocal findings have been reported in the few studies that examined the impact of ambient temperature (T a) and hypohydration on cognition and dynamic balance. The purpose of this study was to determine the impact of acute exposure to a range of ambient temperatures (T(a) 10-40 °C) in euhydration (EUH) and hypohydr...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
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更新日期：2013-04-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2012-05-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2014-11-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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abstract：:Testosterone and cortisol respond to exercise stimuli and modulate adaptation. Episodic basal secretion of these hormones may modify the responsiveness of these hormones. We sought to identify episodic steroid secretion via frequent salivary sampling and investigate any interaction between ultradian rhythmicity and in...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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