1 Integrated Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, Københavns Universitet2 Eyepath Lab, Department of Neuroscience and Pharmacology, Faculty of Health and Medical Sciences, Københavns Universitet3 Eyepath Lab, Department of Neuroscience and Pharmacology, Faculty of Health and Medical Sciences, Københavns Universitet4 Integrated Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, Københavns Universitet
PURPOSE: To evaluate the influence of warm-up exercise intensity and subsequent recovery on intense endurance performance, selected blood variables and the VO2 response. METHODS: Twelve highly trained male cyclists (VO2-max: 72.4±8.0·mL/min/kg, incremental-test peak power output (iPPO): 432±31 W; means±SD) performed three warm-up strategies lasting 20 min before a 4-min maximal performance test (PT). Strategies consisted of moderate intensity exercise (50%iPPO) followed by 6 min of recovery (MOD6) or progressive-high intensity exercise (10-100%iPPO and 2x20-s sprints) followed by recovery for 6 min (HI6) or 20 min (HI20). RESULTS: Before PT venous pH was lower (P<0.001) in HI6 (7.27±0.05) compared with HI20 (7.34±0.04) and MOD6 (7.35±0.03). At the same time differences (P<0.001) existed for venous lactate in HI6 (8.2±2.0 mmol/L), HI20 (5.1±1.7 mmol/L) and MOD6 (1.4±0.4 mmol/L) as well as for venous bicarbonate in HI6 (19.3±2.6 mmol/L), HI20 (22.6±2.3 mmol/L) and MOD6 (26.0±1.4 mmol/L). Mean power in PT in HI6 (402±38 W) tended to be lower (P=0.11) relative to HI20 (409±34 W) and was lower (P=0.007) than in MOD6 (416±32 W). Total VO2 (15-120 s in PT) was higher in HI6 (8.18±0.86 L) relative to HI20 (7.85±0.82 L; P=0.008) and MOD6 (7.90±0.74 L; P=0.012). CONCLUSIONS: Warm-up exercise including race-pace and sprint intervals combined with short recovery can reduce subsequent performance in a 4-min maximal test in highly trained cyclists. Thus, a reduced time at high exercise intensity or a reduced intensity in the warm-up or an extension of the recovery period after an intense warm-up is advocated.
International Journal of Sports Physiology and Performance, 2015, Vol 10, Issue 3, p. 353-360