Abstract：
OBJECTIVES:Overtraining syndrome (OTS) leads to worsened sports performance and fatigue. The pathophysiology of OTS has not been entirely elucidated, and there is a lack of accurate markers for its diagnosis. Changes in hormonal responses implicated in OTS were stimulated by exercise, which has limited their interpretation. Hence, we aimed to evaluate growth hormone (GH) and prolactin responses to a gold-standard and exercise-independent stimulation test, the insulin tolerance test (ITT). DESIGN:Volunteers were recruited and divided into OTS-affected athletes (OTS), healthy athletes (ATL), and healthy non-active subjects (NCS) groups, after general and specific inclusion and exclusion criteria. METHODS:We evaluated the responses of growth hormone (GH) and prolactin to the ITT, and compared between groups. RESULTS:A total of 51 subjects were included (OTS, n=14, ATL, n=25, and NCS, n=12). OTS disclosed significantly lower basal levels of GH (p=0.003) and prolactin (p=0.048), and GH (p=0.001) and prolactin (p<0.001) responses to ITT (p=0.001), compared to ATL, but similar to NCS. OTS showed a later rise in GH levels in response to hypoglycemia, compared to ATL, but not to NCS. We suggest cutoffs for GH and prolactin levels to aid in the diagnosis of OTS. CONCLUSIONS:OTS-affected athletes show reduced GH and prolactin basal levels and responses to a non-exercise stress test compared to healthy athletes, but not to sedentary subjects.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Cadegiani FA,Kater CEdoi
10.1016/j.jsams.2017.10.033subject
Has Abstractpub_date
2018-07-01 00:00:00pages
648-653issue
7eissn
1440-2440issn
1878-1861pii
S1440-2440(17)31746-2journal_volume
21pub_type
杂志文章abstract：:Despite frequent media accounts of drownings in the United Arab Emirates, little was known about the epidemiology and prevention of such incidents. The research objective was to assess newspapers as a national source on incidence, activities, and risk factors for drowning in this high-income media-rich developing coun...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.08.016
更新日期：2009-01-01 00:00:00
abstract：:The ability of fourteen competitive helmsmen of different skill levels to sail a standard course towards the wind (upwind) was assessed using a virtual reality sailing simulator. The simulator consisted of a Laser dinghy deck which pivoted between two supports and was dynamically controlled by a computer driven pneuma...
journal_title：Journal of science and medicine in sport
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更新日期：1998-06-01 00:00:00
abstract：:The objective of this study was to analyze changes in stroke rate (SR), stroke length (SL) and stroke phases (entry and catch, pull, push and recovery) when swimming at (MLSS) and above (102.5% MLSS) the maximal lactate steady state. Twelve endurance swimmers (21±8 year, 1.77±0.10 m and 71.6±7.7 kg) performed in diffe...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2010.08.004
更新日期：2011-03-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.10.022
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVES:To investigate changes in renal status from exercise in the heat with acclimatisation and to evaluate surrogates markers of Acute Kidney Injury. DESIGN:Prospective observational cohort study. METHODS:20 male volunteers performed 60 min standardised exercise in the heat, at baseline and on four subsequent o...
journal_title：Journal of science and medicine in sport
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doi：10.1016/j.jsams.2019.04.010
更新日期：2019-09-01 00:00:00
abstract：:Groin pain is a condition with a high prevalence in young Australian football players. It is considered that early identification of this condition allows for optimal management. Eighty-six players from two elite under-age Australian football sides were screened weekly for hip adductor muscle strength, using a hand-he...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.03.007
更新日期：2010-03-01 00:00:00
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journal_title：Journal of science and medicine in sport
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doi：10.1016/j.jsams.2019.11.004
更新日期：2020-05-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.02.011
更新日期：2015-03-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.04.003
更新日期：2010-05-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2012.10.008
更新日期：2013-09-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2012.09.005
更新日期：2013-07-01 00:00:00
abstract：OBJECTIVES:This research explores snowsport injury trends in western Canadian resorts over the decade 2008-2018. DESIGN:Ecological study. METHODS:Injury and participation data on alpine skiing and snowboarding was provided by the Canada West Ski Areas Association for 2008-2018. Inclusion criteria were met by 29 of 52...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.12.001
更新日期：2020-12-11 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2008.09.009
更新日期：2009-09-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 临床试验,杂志文章
doi：10.1016/s1440-2440(01)80042-6
更新日期：2001-09-01 00:00:00
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更新日期：2020-01-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2016.11.003
更新日期：2017-06-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2008.09.004
更新日期：2010-01-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.07.009
更新日期：2015-07-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.02.014
更新日期：2018-09-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,随机对照试验
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更新日期：2014-09-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jsams.2017.06.002
更新日期：2018-03-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.05.016
更新日期：2018-03-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.03.009
更新日期：2010-05-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2009.09.008
更新日期：2010-09-01 00:00:00
abstract：OBJECTIVES:This project examined the movement strategies adopted by highly experienced older aged lawn bowlers when performing Draw and Drive deliveries. DESIGN:Cross-sectional. METHODS:Twenty five experienced (10.2 ± 7.8 years) older aged lawn bowlers (67.3 ± 7.0 years) who play lawn bowls at least once per week vol...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.04.005
更新日期：2019-09-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2013.07.005
更新日期：2014-07-01 00:00:00
abstract：OBJECTIVES:To assess the effect of ankle, knee, and hip kinematics on patellofemoral and tibiofemoral joint reaction forces (JRF) during bicycling. Secondarily, to assess if sex, horizontal saddle position, or crank arm length were related to JRFs, after accounting for kinematics. DESIGN:Experimental cross-sectional s...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.07.001
更新日期：2021-01-01 00:00:00
abstract：OBJECTIVES:To measure the change in tackling technique of rugby union players following an acute bout of physically fatiguing exercise. DESIGN:Randomised cross-over study design with a physical fatigue condition and no-physical fatigue condition (control). METHODS:Nineteen male amateur club rugby union players (n=19)...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.04.005
更新日期：2020-11-01 00:00:00
abstract：OBJECTIVES:To compare the efficacy of two exercise programmes in reducing pain and disability for individuals with non-specific low back pain and to examine the underlying mechanical factors related to pain and disability for individuals with NSLBP. DESIGN:A single-blind, randomized controlled trial. METHODS:Eighty p...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jsams.2014.11.006
更新日期：2015-11-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.09.006
更新日期：2020-01-01 00:00:00
