The Application of Field-Based Power-Duration Profiling to Elite Female International Hockey Players
Year: 2026
Type: dissertation
Study design: Observational Study
Abstract: Introduction: Parameters derived from the speed-duration relationship have limited ability to account for energetic demands ubiquitous in team sport, such as field hockey.Coupling the continuous 3-minute all-out test (3MT) with an over-ground running mechanical model facilitates derivation of power-duration parameters.The durability of power-duration parameters can better help profile athletes.This study compared baseline parameters against in-situ ones, assessed in-situ durability across quarters and variance explained in match physical performance outputs using total score of athleticisms (TSA).Methods: Using the mechanical model, the 3MTs and international matches of thirteen Great Britain field hockey players were processed to derive mechanical work and power.Matchderived parameters of critical speed (CSIn-Situ), distance-prime (D´In-Situ), critical power (CPIn-Situ) and work-prime (W´In-Situ) were calculated using maximum means and a three-parameter model.Linear regression quantified 'slippage' across quarters, representing in-situ durability.Variance explained in severe-and extreme-intensity work and high-speed running distance (HSR) was calculated from three separate TSAs (kinematic, mechanical, conventional).Results: Differences were found between baseline (CS, D´, CP, W´) and in-situ parameters (p ≤ .001).These were most strongly correlated with baseline power-duration parameters (r = -0.57to 0.77).The CSIn-Situ and CPIn-Situ declined from the first to third quarter (p < .05),no baseline predictors explained within-match durability (p > .05).The mechanical TSA explained more variance in extreme-intensity work (R 2 = 0.14, = -5.35)and HSR (R 2 = 0.28, = -112.7),the conventional TSA best described severe-intensity work (R 2 = 0.27, = 5.31).Conclusion: Preliminary data suggests CPIn-Situ shows greater agreement with baseline capacities than kinematic measures, yet systematic differences caution interchangeability.Decrements in CPIn-Situ and CSIn-Situ across quarters may have implications for balance of W´ modelling (W´BAL).Longitudinal match mechanical modelling may further elucidate the small to large variance explained in severe-and extreme-intensity work and HSR.
Source: Cronfa (Swansea University)
Author: ALFIE GRIGGS
Institution: Swansea University
Language: English
Subfield: Orthopedics and Sports Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W7171005596