THE RELATIONSHIP BETWEEN MUSCLE FIBER COMPOSITION AND LACTATE THRESHOLD IN UNTRAINED AND WELL-TRAINED MEN
- VernacularTitle:骨骼肌Ⅰ、Ⅱ型纤维组成与乳酸阈的关系
- Author:
Qian ZHOU
;
Xinming TAO
;
- Publication Type:Journal Article
- Keywords:
muscle fiber composition, maximal oxygen uptake, lactate threshold
- From:
Chinese Journal of Sports Medicine
1982;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
The investigation was conducted among eight untrained male and six well-trained male cyclists with the purpose of finding out the relationship between muscle fiber composition and lactate threshold. Muscle biopsy samples were taken of vastus lateralis to determine the composition of fiber type (Ⅰ, Ⅱ). Maximal oxygen uptake was measured in a progressive cycle ergometer test, while blood lactate threshold was determined on the basis of a systematic increase in BLa above baseline warm-up values. Analyses show that the percentage of type Ⅰ is closely correlated with lactate threshold in both groups of subjects and that muscle fiber composition plays (?) important role in determining lactate threshold. Therefore, an assessment of muscle fiber composition is useful for spotting athletes with high potential for endurance performance.
