Abstract:
:We investigated the influence of autonomic blockade (AB) on the left ventricular (LV) diastolic function at rest (R) and during bicycle exercise (EX) in eight endurance-trained (TR) and ten untrained subjects (UT). Two-dimensional and M-mode echocardiography at the parasternal long axis were performed at rest and during an exercise protocol, which consisted of two stages of 50 and 100 W. Using the digitized data from the M-mode echocardiogram, the normalized maximal increase in LV dimension during the rapid filling phase (nmD) was calculated according to Hörtnagl. Additionally the ECG was recorded at R and during Ex 60 min after this first test. 0.02 mg.kg body mass-1 propanolol and 0.04 mg.kg body mass-1 atropine were injected intravenously over a 5-min period and the test procedure was repeated as described above. Before AB nmD increased significantly from resting values to 100 W in both groups, whereas nmD tended to be lower in UT compared to TR. During AB nmD of UT was rather unchanged at R and during EX compared to pre-blockade conditions. In contrast nmD of TR was slightly reduced and this difference was significant at 100 W. No major difference in nmD between the TR and UT group could be observed during AB. Before and during AB HR of TR were significantly lower at rest, 50 and 100 W compared to UT. We conclude that the enhanced diastolic relaxation observed in endurance athletes seems to be due to a training-induced adaptation of the autonomic nervous system.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Niess A,Roecker K,Mayer F,Heitkamp HC,Dickhuth HHdoi
10.1055/s-2007-972921subject
Has Abstractpub_date
1996-11-01 00:00:00pages
S180-3eissn
0172-4622issn
1439-3964journal_volume
17 Suppl 3pub_type
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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-0035-1548813
更新日期:2015-10-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
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abstract::This study was designed to assess the effects of Ramadan-intermittent-fasting (RIF) and time-of-day on muscle power and fatigue during the Wingate test. In a randomized design, 10 football players completed a Wingate test at 07:00 and 17:00 h on 3 different occasions: one week before Ramadan (BR), the second week of R...
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:2012-02-01 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-2004-830495
更新日期:2005-04-01 00:00:00
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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-0031-1283178
更新日期:2011-11-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2008-1025736
更新日期:1986-04-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025785
更新日期:1986-12-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025714
更新日期:1987-11-01 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:2020-12-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-0875-4033
更新日期:2019-07-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-972853
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-2007-1021231
更新日期:1992-01-01 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-2004-830450
更新日期:2005-01-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021252
更新日期:1992-02-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024655
更新日期:1991-02-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024838
更新日期:1990-12-01 00:00:00
abstract::The acute effect of weightlifting on beta-endorphin and estradiol was studied in experienced female recreational weightlifters. Five eumenorrheic females completed two months of testing, each with a different sequence of testing conditions (SEQ1 and SEQ2). In SEQ1, a week of weight maintenance diet and prescribed exer...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021313
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
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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:2010-12-01 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: 临床试验,杂志文章
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更新日期:2002-05-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-837618
更新日期:2006-03-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021279
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
doi:10.1055/s-2007-972825
更新日期:1996-02-01 00:00:00
abstract::The aim of this study was to determine long term changes in shoulder and elbow joints of former elite javelin throwers. Twenty-one elite javelin throwers were examined at an average of 19 years after the end of their high performance phase. Mean age at examination was 50 years. Functional assessment of both shoulders ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2001-13814
更新日期:2001-05-01 00:00:00
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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:2016-10-01 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:2021-01-18 00:00:00
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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-0042-109066
更新日期:2016-09-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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