4/9/2023 0 Comments Trimps game guideThe following HR data were recorded: TRIMP, maximum HR, average HR, and percent time spent in each training zone (1–5). The athletes participated in a light to moderate ice hockey practice consisting of multiple repetitions of one warm-up drill (2 on 0 offensive shooting), two shooting and passing drills (2 on 0 with position-specific shooting), two system drills (2 vs 1 and 2 vs 3 mixed offense and defense) and one battle drill (5 vs 5). We hypothesized that TRIMP would demonstrate moderate reliability on ice.įor both the test and retest on-ice sessions, athletes were fitted with Firstbeat™ HR monitors (Firstbeat SPORT, Jyvaskyla, Finland) before taking the ice. The aim of this study was to evaluate the test-retest reliability of TRIMP during on-ice training sessions in Division I collegiate male ice hockey players. Since these data are currently being used by professional and collegiate hockey teams, it would be useful for coaches, staff, and athletes to know the thresholds for real or meaningful change for these variables. Furthermore, the reliability of TRIMP is not known for on-ice training sessions in hockey, which involve intermittent work comprising variable work-rest intervals performed at a range of exercise intensities. To our knowledge, the reliability of TRIMP has only been tested in a laboratory setting during steady-state and interval cycling and has demonstrated moderate reliability (percent typical error : 10.7–15.6). TRIMP is a measure of internal load that integrates time, intensity and a relative weighting of the intensity of exercise. The HR derived variable TRaining IMPulse (TRIMP) has recently gained favor in team sport as a means to quantify sessional training load. The use of an objective measure of on-ice training load provides a scientific basis for changes in performance, assisting team coaches and strength and conditioning staff to better assess load-performance relationships with a view to optimizing future planning for practices and competitions. Due to these unique demands, training load is difficult to quantify in ice hockey, especially during on-ice sessions.Īutomated heart rate (HR) monitoring systems are currently being used by professional and collegiate ice hockey teams as a way of assessing an athlete’s response to workload (i.e., internal load) in practice and game settings. Coordinating the training load between on-ice and off-ice work adds to the complexity of the development of training programs. Furthermore, physical activity levels during on-ice practice differ between playing position and line status of the player. Typical on-ice practice consists of a combination of systems drills, skill drills, battle drills and conditioning drills-making it difficult for coaches to quantify the external work performed-with the duration of each varying throughout the season. In-season, this is primarily accomplished during on-ice training sessions. The development of ice hockey training programs is challenging as multiple components of fitness need to be addressed (e.g., speed, muscular strength, aerobic endurance, sport-specific skill) along with game tactics and team play. The external work performed on-ice is predominately supported by anaerobic metabolism, however aerobic factors appear to be important for fatigue resistance. During competition, roughly 18% of actual playing time is spent performing high-intensity activity (e.g., fast forward skating, forward sprinting, fast backward skating), with the remainder spent performing low-intensity activity (e.g., slow forward skating, gliding, standing). Ice hockey is a complex intermittent team sport. The results from our study can be used to determine the threshold for meaningful change in TRIMP, which may aid in informing decisions by coaches and strength training staff regarding on-ice training session difficulty and composition. TRIMP is suitable for quantifying training load during intermittent work in hockey athletes. Systematic error, quantified as standardized change in means was negligible (–0.19) random error quantified as the percent typical error (%TE) was moderate (12.2%) and, test-retest correlation was very strong (0.75). TRIMP demonstrated moderate reliability during on-ice sessions. TRIMP and other descriptive HR variables were compared between sessions. Twelve Division I collegiate male ice hockey players (aged 18–23 years) had their heart rate (HR) data recorded during two on-ice practice sessions separated by two weeks. This study determined the reliability of TRIMP during on-ice training sessions in ice hockey players. Having a reliable measure of internal training load during on-ice training sessions would help coaches program exercise training. The utility of the heart rate derived variable TRaining IMPulse (TRIMP) for assessing internal training load in ice hockey players is not clear.
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