Stability of Hand Grip Strength Across a Competitive Season in Elite Male and Female Ice Hockey Players
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorDalarna County Council, Sweden
About this trial
This study examines how hand grip strength changes over the course of a competitive ice hockey season in elite male and female players.
Hand grip strength is a simple and widely used measure of upper-body strength and functional capacity. It is often used in sports science and clinical settings, but it is unclear whether grip strength remains stable throughout a season or changes depending on training load, match exposure, and fatigue.
In this study, elite ice hockey players from Swedish teams will have their grip strength measured at four timepoints during one season: pre-season, early season, mid-season, and late season. Both dominant and non-dominant hand strength will be assessed using a standardized dynamometer and protocol.
The main purpose is to determine how much grip strength varies within individual players over time and whether a single measurement can be considered representative of a player's true strength level across a season. The study will also evaluate the reliability of grip strength measurements and whether observed changes are large enough to be meaningful in a clinical or performance context.
No intervention is performed, and all measurements are non-invasive and conducted as part of routine testing environments within participating teams.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Contracted elite ice hockey players in participating Swedish teams (SHL, HockeyAllsvenskan, SDHL or equivalent top division)
Male or female players competing at elite level
Available for testing at all predefined measurement timepoints across the season
Able to perform maximal hand grip strength testing
Disqualifiers
Acute hand or wrist injury at baseline preventing maximal grip strength testing
Any condition during the study period preventing completion of repeated grip strength assessments
Inability to participate in all scheduled measurement sessions
Refusal to participate
Trial population
150
Trial design
Design model
Cohort
Time perspective
Prospective
Treatments tested in this trial
Not listed
Trial groups
150 Participants
are grouped into 1 trial groupGroup A: Elite Ice Hockey Players Cohort
Trial outcomes
Primary outcomes
1
Within-Subject Variability of Hand Grip Strength
Within-subject variability of maximal isometric hand grip strength across a competitive season in elite ice hockey players, expressed as coefficient of variation (CV%) across repeated measurements.
Time frame
From baseline (pre-season) to end of season (pre-playoff), up to 8 monthsSecondary outcomes
1
Test-Retest Reliability of Hand Grip Strength
Reliability of repeated grip strength measurements across the season assessed using intraclass correlation coefficient (ICC).
Time frame
From baseline (pre-season) to end of season (pre-playoff), up to 8 months2
Within-Subject Standard Deviation of Grip Strength
Absolute within-player variability in grip strength across the competitive season.
Time frame
From baseline (pre-season) to end of season (pre-playoff), up to 8 months3
Standard Error of Measurement (SEM)
Measurement error of grip strength across repeated seasonal assessments.
Time frame
From baseline (pre-season) to end of season (pre-playoff), up to 8 months4
Minimal Detectable Change (MDC95)
Smallest change in grip strength considered beyond measurement error with 95% confidence.
Time frame
From baseline (pre-season) to end of season (pre-playoff), up to 8 monthsSponsors and contacts
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Source ClinicalTrials.gov
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