A reliable preloaded cycling time trial for use in conditions of significant thermal stress

摘要: The purpose of this study was to assess the reliability a 15-min time trial preloaded with 45 min fixed-intensity cycling under laboratory conditions thermal stress. Eight trained cyclists/triathletes (41 ± 10 years, VO2peak: 69 ± 8 mL/kg/min, peak aerobic power: 391 ± 72 W) completed three trials (the first familiarization) where they cycled at ∼ 55% VO2peak for followed by (∼75% VO2peak) significant stress (WBGT: 26.7 ± 0.8 °C, frontal convective airflow: 20 km/h). Seven days separated trials, which were conducted same day following 24 h exercise and dietary control. Reliability increased when familiarization performed, resulting coefficient variation intraclass correlation work during trial, 3.6% 0.96, respectively. Therefore, these results demonstrate high level 45-min preload performed using cyclists/triathletes.