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The Effect of Surface on Knee Landing Mechanics and Muscle Activity during a single leg landing task in Recreationally Active Females

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Richardson, Mark, Chesterton, Paul, Taylor, Abigale and Evans, Will (2024) The Effect of Surface on Knee Landing Mechanics and Muscle Activity during a single leg landing task in Recreationally Active Females. Physical Therapy in Sport. ISSN 1873-1600 (In Press)

Item Type: Article


Objective: Investigate the effect of surface on frontal plane knee angle, knee moment and muscle activity.
Design: Randomised cross over.
Setting: University Laboratory.
Methods: Twenty females performed single-leg hop-landings onto sand, grass and firm surfaces. Kinematic, kinetic and muscle activity data were obtained. Compatibility curves were used to visualise parameter estimates alongside P- values, and S-value transforms. Results: Knee angle for firm-sand (mean difference (????)̄ = -2.2°; 95% compatibility interval (CI): -4.6 to 0.28, p =0.083, s = 3.6) and firm-grass (???? ̄= -1.9; 95% CI: -4.3 to 0.5, p=0.125, S = 3) yielded < 4 bits of reputational information against the null hypothesis (H). 5 bits (p =0.025) of information against H were observed for knee moment between firm-sand (???? ̄ = 0.17 N.m/kg-1.m-1; 95% CI: 0.02 to 0.31) with similar effects for firm-grass (???? ̄ = 0.14 45 N.m/kg-1.m-1; 95% CI: -0.02 to 0.29, p =0.055, s = 4). Muscle activity across surfaces ranged 46 from almost no (s=1) reputational evidence against H (Quadriceps and Hamstrings) to 10-13 ‘bits’ against H for lateral gastrocnemius (lower on sand).
Conclusions: Our study provides valuable information for practitioners of the observed effect sizes for lower-limb landing mechanics across surfaces in asymptomatic females.

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More Information

Depositing User: Will Evans


Item ID: 17874
Identification Number:
ISSN: 1873-1600
Official URL:

Users with ORCIDS

ORCID for Mark Richardson: ORCID iD
ORCID for Paul Chesterton: ORCID iD
ORCID for Abigale Taylor: ORCID iD
ORCID for Will Evans: ORCID iD

Catalogue record

Date Deposited: 10 Jul 2024 12:43
Last Modified: 11 Jul 2024 08:15


Author: Mark Richardson ORCID iD
Author: Paul Chesterton ORCID iD
Author: Abigale Taylor ORCID iD
Author: Will Evans ORCID iD

University Divisions

Faculty of Health Sciences and Wellbeing > School of Nursing and Health Sciences > Department of Sport and Excercise Sciences


Sciences > Sport Sciences

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