当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF SPORTS MEDICINE期刊下所有文献 > Ergometric and psychological findings during overtraining: a long-term follow-up study in endurance athletes.

Ergometric and psychological findings during overtraining: a long-term follow-up study in endurance athletes.

Abstract：

:In the present prospective longitudinal study 17 male endurance trained athletes (cyclists and triathletes; age 23.4+/-6.7 years, VO2max 61.2+/-7.5 ml x min(-1) x kg(-1); means+/-SD) were investigated both during a state of overtraining syndrome (OT: N=15), mainly induced by an increase of exercise intensity, as well as several times in a state of regular physical ability (NS: N=62). Cycle-ergometric and psychological data were compared for a period of approximately 19 months. On 2 separate days, each subject performed a maximum incremental graded exercise, two anaerobic tests (10 s and 30 s) as well as a short-endurance "stress test" with the intensity of 110% of the individual anaerobic threshold until volitional exhaustion. The mood state was recorded by a psychological questionnaire including 40 basic items. During OT the submaximal lactate concentrations were slightly decreased. The performance of the 10 s- and 30 s-tests was unaffected. In contrast, the duration of the "stress test" decreased significantly by approximately 27% during OT compared to the individual NS. The submaximal oxygen uptake measured during the incremental graded exercise was slightly higher during OT as compared to NS, whereas the submaximal and maximal respiratory exchange ratio, maximal heart rate and maximal lactate concentrations were decreased. At the 10th minute of the "stress test", ammonia tended to be increased during OT (P=0.048). The parameters of mood state at rest as well as the subjective rating of perceived exertion during exercise were significantly impaired during OT. In conclusion, the results indicate a decreased intramuscular utilization of carbohydrates with diminished maximal anaerobic lactacid energy supply during OT. Neither the lactate-performance relationship during incremental graded exercise nor the anaerobic alactacid performance showed alterations. The duration of the short-endurance "stress test", the maximal lactate concentration of the incremental graded exercise as well as the altered mood profile turned out to be the most sensitive parameters for the diagnosis of OT.

journal_name

Int J Sports Med

journal_title

International journal of sports medicine

authors

Urhausen A,Gabriel HH,Weiler B,Kindermann W

doi

10.1055/s-2007-971892

subject

Has Abstract

pub_date

1998-02-01 00:00:00

pages

114-20

issue

eissn

0172-4622

issn

1439-3964

journal_volume

pub_type

杂志文章

在线工具

Ergometric and psychological findings during overtraining: a long-term follow-up study in endurance athletes.