Fig 1.
HT0: start of the half-time break; HT5: 5 min after HT0; HT10: 10 min after HT0. Each 30-min session consisted of 15 sprints (i.e., maximal pedaling), each lasting 6 sec, interspersed by 114 sec of low work rate pedaling. The two 30-min sessions were separated by a 15-min break at half-time. Participants ingested 150 g of −2°C-ice slurry, or a 30°C-beverage, or 30°C-water every 5 min (total 450 g) during the 15-min half-time break.
Fig 2.
ICE: −2°C-ice slurry; CON: 30°C-beverage; WAT: 30°C-water. The changes in the peak power (a) and total peak power (b) during the 2nd session in the ICE, CON, and WAT groups. The changes in the peak power (%) were calculated relative to the value at the end of the 15th sprint of the 1st session. Values are expressed as the means ± SE of the 12 participants, *p < 0.05, **p < 0.01 ICE vs. CON, #p < 0.05, ##p < 0.01 ICE vs. WAT.
Fig 3.
ICE: −2°C-ice slurry; CON: 30°C-beverage; WAT: 30°C-water. The changes in the mean power (a) and total mean power (b) during the 2nd session in the ICE, CON, and WAT groups. The changes in the mean power (%) were calculated relative to the value at the end of the 15th sprint of the 1st session. Values are expressed as the means ± SE of the 12 participants, **p < 0.01 ICE vs. CON, #p < 0.05 ICE vs. WAT, NS: Not significant.
Fig 4.
ICE: −2°C-ice slurry; CON: 30°C-beverage; WAT: 30°C-water; HT0: start of the half-time break; HT5: 5 min after HT0; HT10: 10 min after HT0. The changes of the Tty (a) and Tsk (b) from the 15th sprint of the 1st session to the half-time break and the 2nd session in the ICE, CON, and WAT groups. Values are expressed as the means ± SE of the 12 participants. *p<0.05 ICE vs. CON, #p<0.05, ##p<0.01 ICE vs. WAT.
Table 1.
Heat storage capacity.
Fig 5.
ICE: −2°C-ice slurry; CON:30°C-beverage; WAT: 30°C-water; HT0: start of the half-time break; HT5: 5 min after HT0; HT10: 10 min after HT0. Values are expressed as the means ± SE of the 12 participants. #p < 0.05 ICE vs. WAT, ††p < 0.01 CON vs. WAT.
Table 2.
Subjective fatigue.