High‐intensity cycling re‐warm up within a very short time‐frame increases the subsequent intermittent sprint performance
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abstract
AbstractThis study investigated the effect of high‐intensity cycling re‐warm up (RW) within a very short time‐frame on the subsequent intermittent sprint performance. Twelve active males completed three trials in random order: control (CON); 3‐min RW at 30% of maximal oxygen uptake (VO2max) (RW30); and 1‐min RW at 90% of VO2max (RW90). During the experimental trials, participants performed 40‐min intermittent cycling exercise followed by 15‐min rest. During the rest period, participants completed CON, RW30, or RW90. After the rest period, participants performed the Cycling Intermittent‐Sprint Protocol (CISP), which consisted of 10‐s rest, 5‐s maximal sprint, and 105‐s active recovery with the cycles repeated over 10 min. The mean work during sprint for the CISP was significantly higher in both RW trials than in the CON trial (mean±standard deviation; CON: 3539±698 J; RW30: 3724±720 J; RW90: 3739±736 J; p<0.05). The mean electromyogram amplitude during the sprint for the CISP was higher in the RW30 trial than in the CON trial; however, there was no significant difference between the two trials (p=0.06). The mean median frequency during sprint for the CISP was significantly higher in the RW90 trial than in the other trials (p<0.05). Rectal temperature did not differ among the three trials. Oxygenated haemoglobin during the initial 30 s of the CISP was significantly higher in the RW90 trial than in the CON trial (p<0.05). Compared with seated rest, RW, irrespective of whether it comprised 1‐min at 90% of VO2max or 3‐min at 30% of VO2max, increased the subsequent intermittent sprint performance.
