| Autor: |
Bird, Stephen R., Theakston, Simon C., Owen, Andrew, Nevill, Alan M. |
| Předmět: |
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| Zdroj: |
Journal of Aging & Physical Activity; Jul2003, Vol. 11 Issue 3, p333-350, 18p, 6 Charts |
| Abstrakt: |
This study assessed physiological and cardiac factors associated with 10-km running performance in a group of highly trained endurance runners age 21-63 years. Participants (N = 37) underwent a resting echocardiograph and incremental treadmill running test. They also provided information on their recent 10-km races. Data were analyzed using "best subsets" multiple regression. Declines with age were found for 10-km running speed (0.26 m · s[sup-1] · decade[sup-1]), maximum heart rate (4 beats/decade), VO[sub2peak] (6 ml · kg[sup-1] · min[sup-1] · decade[sup-1]), velocity at lactate threshold (l m · s[sup-1] · decade[sup-1]), and VO[sub2] at lactate threshold (4 ml · kg[sup-1] · min[sup-1] · decade[sup-1]). The percentage of VO[sub2peak] at which lactate threshold occurred increased with age by 1.5% per decade. The rate of change of displacement of the atrioventricular plane at the left free wall and septum both declined by 1 cm · s[sup-1] · decade[sup-1]. The best single predictor of 10-km running speed was velocity at lactate threshold. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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