Heart rate response and contextual variables in professional rink hockey competitions

BACKGROUND: Professional rink hockey is a highly demanding intermittent sport. This study investigates the heart rate response (HRR) during official rink hockey league matches and explores the influence of players' and match -related contextual variables on HRR. METHODS: Polar Team app was used to monitor heart rate. The variables extrapolated were time spent at 90% of the maximum heart rate (HRmax) and relative HRmax. Multilevel regression models were used to explore the associations between dependent variables, player-, and match-related characteris-tics. Fifty-six matches during two regular seasons of the major league in a competitive-elite Italian rink hockey team were monitored.RESULTS: Overall, players spent-40% of the time in the light intensity zones (90% HRmax). HRR was mainly related to training experience and the importance of each player within the team. In fact, starter players spend much more time at intensities >80% HRmax than first and second change players (P