The Yo-Yo Intermittent Recovery Test: Physiological Response, Reliability, and Validity
University of Southern Denmark · Rigshospitalet · +2 more institutions
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Abstract
Methods
Heart rate was measured, and metabolites were determined in blood and muscle biopsies obtained before, during, and after the Yo-Yo test in 17 males. Physiological measurements were also performed during a Yo-Yo retest and an exhaustive incremental treadmill test (ITT). Additionally, 37 male elite soccer players performed two to four seasonal tests, and the results were related to physical performance in matches.
Results
The test-retest CV for the Yo-Yo test was 4.9%. Peak heart rate was similar in ITT and Yo-Yo test (189 +/- 2 vs 187 +/- 2 bpm), whereas peak blood lactate was higher (P
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8Topics & keywords
Topics
Keywords
- Blood lactate
- Heart rate
- Treadmill
- Glycogen
- Reproducibility
- VO2 max
- Medicine
- Creatine
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