Abstract:
:Muscle fiber distribution and muscle enzyme activity (m. vastus lat.) were investigated in 10 elite sprint cyclists and 12 nonathletes. The ratio of fast to slow muscle fibers was 2:3 in cyclists and 3:2 in nonathletes. The mean diameter of each muscle fiber type was significantly higher in the athletes. The mean enzyme activity values in mu kat X g-1 w.w. for cyclists and nonathletes, respectively, were as follows: triosephosphate dehydrogenase (TPDH), 6.2 and 3.78; lactate dehydrogenase (LDH), 4.4 and 4.59; citrate synthase (CS), 0.154 and 0.13; hydroxyacyl-CoA dehydrogenase (HAD), 0.041 and 0.07. The mean difference between groups in TPDH and in (TPDH + LDH)/(CS + HAD) ratio were statistically significant. Maximum voluntary isometric strength (knee extension) was about 17% greater in cyclists than the mean value for Czechoslovakian men of the same age. A strong positive correlation (r = 0.72) between the percent of fast glycolytic fibers (type II B) and isometric strength was observed in the cyclists. Furthermore, mean weight-compensated maximal oxygen consumption (VO2 max, ml X kg-1 X min-1) for all subjects (n = 22) was significantly related to percent of slow oxidative fibers (type I) (r = 0.75) and to the mean diameter of type II B (r = 0.58), fast oxidative-glycolytic fibers (type II A) (r = 0.68) and type I fibers (r = 0.59).
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Macková E,Melichna J,Havlícková L,Placheta Z,Blahová D,Semiginovský Bdoi
10.1055/s-2008-1025778subject
Has Abstractpub_date
1986-10-01 00:00:00pages
295-7issue
5eissn
0172-4622issn
1439-3964journal_volume
7pub_type
杂志文章abstract::The influence of exercise training on plasma amino acid concentrations at rest and after exercise was examined in a highly trained group of humans and compared with the response of a control group of nontrained healthy humans. After a bout of intense exercise at the same relative work load, the trained group exhibited...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024908
更新日期:1989-08-01 00:00:00
abstract::Cardiac magnetic resonance imaging was performed on 14 junior elite Olympic weight lifters and 14 controls (means +/- Se, age = 18.4 +/- 0.5 and 17.8 +/- 0.4 years, weight = 76.5 +/- 3.6 and 78.8 +/- 3.3 kg, % fat = 6.5% +/- 0.8% and 11.5% +/- 1.7%, respectively). Controls were individually matched to the lifters to w...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024923
更新日期:1989-10-01 00:00:00
abstract::Dietary intake, plasma lipids, lipoprotein and apolipoprotein levels, anthropometric measurements and anaerobic performance were studied in eleven judo athletes during a period of weight maintenance (T1) and after a 7d food restriction (T2). Dietary data were collected using a 7-day diet record. Nutrient analysis indi...
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:2001-08-01 00:00:00
abstract::This study was undertaken to assess whether ventilatory anaerobic threshold (T vent) reflected endurance capacity (EC) in sports medical control. Fifteen subjects performed two cycle ergometer tests. The first was a maximal exercise test, which consisted of increasing the load 20 W/min until exhaustion. During this te...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025654
更新日期:1987-06-01 00:00:00
abstract::Blood pressure (BP) assessment during resistance exercise can be useful to avoid high BP, reducing cardiovascular risk, especially in hypertensive individuals. However, non-invasive accurate technique for this purpose is not available. The aim of this study was to compare finger photoplethysmographic (FPP) and intra-a...
journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:2010-08-01 00:00:00
abstract::Hypertension is not uncommon in childhood and adolescence; vascular and renal causes predominate. Non-pharmacologic therapy, including exercise, may lower blood pressure (BP). There are several articles relating to the use of exercise as a therapy for high BP. Most of these show a beneficial effect. The "dose" of exer...
journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2000-8497
更新日期:2000-11-01 00:00:00
abstract::The total number of leucocytes, T lymphocyte subsets, mitogen induced proliferation of lymphocytes, Il-2 generation, adherence capacity and chemiluminescence of granulocytes were measured and a leukergy test performed in fifteen young cyclists. The investigations were carried out at rest at the beginning of a training...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021067
更新日期:1994-08-01 00:00:00
abstract::Our purpose was to determine if an acute bout of heading soccer balls adversely affected postural control and self-reported symptoms of cerebral concussion. Thirty-one college-aged soccer players were randomly placed into either a kicking group or a heading group. Subjects either kicked or headed 18 soccer balls over ...
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-2004-819941
更新日期:2004-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1055/s-0043-114864
更新日期:2017-10-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-0835-6119
更新日期:2019-04-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0035-1569347
更新日期:2016-06-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025853
更新日期:1985-10-01 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-0034-1394394
更新日期:2015-04-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2003-41174
更新日期:2003-08-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0034-1385864
更新日期:2015-01-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2002-19375
更新日期:2002-01-01 00:00:00
abstract::We have studied the effect of exercise on the percentage of free plasma estradiol 17-beta (E2) and testosterone (T) in 13 untrained (UT) and 8 trained (marathon runners, MR) eumenorrheic women. All women performed a standardized bicycle ergometer (UT) or treadmill (MR) test in the follicular and luteal phases of their...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025721
更新日期:1987-12-01 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:2011-11-01 00:00:00
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journal_title:International journal of sports medicine
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doi:10.1055/s-2007-1024924
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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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journal_title:International journal of sports medicine
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更新日期:1997-07-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1038620
更新日期:2008-11-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-865922
更新日期:2006-07-01 00:00:00
abstract::Brain 5-HT neurotransmission has been described to be down-regulated in depressed people, and also suspected to be changed in overtraining state, the consequence of long-term physical overloading and stress in athletes. We studied brain serotonin (5-HT) transporter binding i.e., 5-HT reuptake with the specific radioli...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-872930
更新日期:2006-09-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-965067
更新日期:2007-11-01 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
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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
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更新日期:2017-09-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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