| Autor: |
LAMBERTS, ROBERT P., LEMMINK, KOEN A.P.M., DURANDT, JUSTIN J., LAMBERT, MICHAEL I. |
| Zdroj: |
Journal of Strength & Conditioning Research; Aug2004, Vol. 18 Issue 3, p641-645, 5p |
| Abstrakt: |
A change in heart rate at a controlled submaximal exercise intensity is used as a marker of training status. However, the standard error of measurement has not been studied systematically, and therefore a change in heart rate, which can be considered relevant, has not been determined. Forty-four subjects (26.5 ± 5.4 years; mean ± standard deviation) participated in a submaximal running test at the same time of day for 5 consecutive days. Heart rates were determined during each of the 4 exercise intensities (2 minutes each) of increasing intensity and during the 1-minute recovery period after each stage. The repeatability of the heart rate on a day-to-day basis during the stages and recovery periods were high (intraclass correlation coefficient: 95% confidence interval R = 0.94-0.99). The lowest variation in heart rate occurred in the fourth stage (≈90% maximum heart rate) with heart rate varying 5 ± 2 b·min-1 (95% confidence interval for coefficient of variation = 1.1-1.4%). In conclusion, the standard error of measurement of submaximal heart rate is 1.1-1.4%. This magnitude of measurement error needs to be considered when heart rate is used as a marker of training status. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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