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Sex-Related Differences in Shoulder Complex Joint Dynamics Variability During Pediatric Manual Wheelchair Propulsion. J Appl Biomech 2024 Apr 01;40(2):112-121

Date

11/21/2023

Pubmed ID

37984356

Pubmed Central ID

PMC12326509

DOI

10.1123/jab.2022-0276

Scopus ID

2-s2.0-85189119204 (requires institutional sign-in at Scopus site)   2 Citations

Abstract

More than 80% of adult manual wheelchair users with spinal cord injuries will experience shoulder pain. Females and those with decreased shoulder dynamics variability are more likely to experience pain in adulthood. Sex-related differences in shoulder dynamics variability during pediatric manual wheelchair propulsion may influence the lifetime risk of pain. We evaluated the influence of sex on 3-dimensional shoulder complex joint dynamics variability in 25 (12 females and 13 males) pediatric manual wheelchair users with spinal cord injury. Within-subject variability was quantified using the coefficient of variation. Permutation tests evaluated sex-related differences in variability using an adjusted critical alpha of P = .001. No sex-related differences in sternoclavicular or acromioclavicular joint kinematics or glenohumeral joint dynamics variability were observed (all P ≥ .042). Variability in motion, forces, and moments are considered important components of healthy joint function, as reduced variability may increase the likelihood of repetitive strain injury and pain. While further work is needed to generalize our results to other manual wheelchair user populations across the life span, our findings suggest that sex does not influence joint dynamics variability in pediatric manual wheelchair users with spinal cord injury.

Author List

Leonardis JM, Schnorenberg AJ, Vogel LC, Harris GF, Slavens BA

Authors

Gerald Harris PhD Director in the Orthopaedic Research Engineering Center (OREC) department at Marquette University
Gerald F. Harris Emeritus Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
Brooke Slavens BS,MS,PhD Professor in the Mechanical Engineering department at University of Wisconsin - Milwaukee




MESH terms used to index this publication - Major topics in bold

Adult
Biomechanical Phenomena
Child
Female
Humans
Male
Shoulder
Shoulder Joint
Shoulder Pain
Spinal Cord Injuries
Wheelchairs