Test-retest reliability of TRIMP in collegiate ice hockey players

Jason G. Ulmer; Grant R. Tomkinson; Sandra Short; Martin Short; John S. Fitzgerald

doi:10.5114/biolsport.2019.84670

eISSN: 2083-1862
ISSN: 0860-021X

Biology of Sport

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2/2019
vol. 36

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abstract:

Original paper

Test-retest reliability of TRIMP in collegiate ice hockey players

Jason G. Ulmer

¹

,

Grant R. Tomkinson

^{1, 2}

,

Sandra Short

¹

,

Martin Short

¹

,

John S. Fitzgerald

¹

Human Performance Laboratory, Department of Education, Health and Behavior Studies, University of North Dakota, Grand Forks, ND, USA
Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences & Sansom Institute for Health Research, University of South Australia, Adelaide, SA, Australia

Biol Sport. 2019;36(2):191–194

DOI: https://doi.org/10.5114/biolsport.2019.84670

Online publish date: 2019/04/29

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The utility of the heart rate derived variable TRaining IMPulse (TRIMP) for assessing internal training load in ice hockey players is not clear. Having a reliable measure of internal training load during onice training sessions would help coaches program exercise training. This study determined the reliability of TRIMP during on-ice training sessions in ice hockey players. 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. TRIMP and other descriptive HR variables were compared between sessions. TRIMP demonstrated moderate reliability during on-ice sessions. 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, testretest correlation was very strong (0.75). TRIMP is suitable for quantifying training load during intermittent work in hockey athletes. 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.

keywords:

Test-retest reliability of TRIMP in collegiate ice hockey players

Jason G. Ulmer 1 , Grant R. Tomkinson 1, 2 , Sandra Short 1 , Martin Short 1 , John S. Fitzgerald 1

Internal training load, Training impulse, Heart rate, Reliability, Athletes, Sport

Jason G. Ulmer

¹

,

Grant R. Tomkinson

^{1, 2}

,

Sandra Short

¹

,

Martin Short

¹

,

John S. Fitzgerald

¹