Reliability of lower limb biomechanics in two sport-specific sidestep cutting tasks

Kam Ming MOK, Roald BAHR, Tron KROSSHAUG*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)

9 Citations (Scopus)

Abstract

The purpose of this study was to assess the within- and between-session reliability of lower limb biomechanics in two sport-specific sidestep cutting tasks performed by elite female handball and football (soccer) athletes. Moreover, we aimed at determining the minimum number of trials necessary to obtain a reliable measure. Nineteen elite female handball and 22 elite female football (soccer) athletes (M ± SD: 22 ± 4 yrs old, 168 ± 5 cm, 66 ± 8 kg) were tested. The reliability was quantified by intra-class correlations (ICCs), typical error and Spearman’s rank correlation. Only minor improvements in ICC values were seen when increasing the number of trials from 3 to 5. Based on trials 1–3, all variables showed good to excellent within-session reliability (M ICC: 0.91, 95% CI: 0.89–0.93), fair to good between-session reliability (M ICC: 0.73, 95% CI: 0.70–0.76), moderately positive between-session rank correlation coefficients (M: 0.72, 95% CI: 0.69–0.76). A few frontal plane biomechanical variables displayed lower between-session reliability in the football task compared with the handball task. The moderately positive between-session ranking and practically small typical error implies that the measurements could reliably reproduce the ranking of individuals in multiple-session studies. Adequate reliability could be attained from 3 trials, with only minor improvements when adding more trials.
Original languageEnglish
Pages (from-to)157-167
Number of pages11
JournalSports Biomechanics
Volume17
Issue number2
Early online date10 Mar 2017
DOIs
Publication statusPublished - 3 Apr 2018
Externally publishedYes

Bibliographical note

The Oslo Sports Trauma Research Center has been established at the Norwegian School of Sport Sciences through generous grants from the Royal Norwegian Ministry of Culture, the South-Eastern Norway Regional Health Authority, the International Olympic Committee, the Norwegian Olympic Committee & Confederation of Sport and Norsk Tipping AS.

Keywords

  • 3D motion analysis
  • elite female athletes
  • kinematics and kinetics
  • screening task
  • test–retest

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