Lower-limb work during low- and high-impact tasks in hip-related pain: Associations with sex and symptoms

Background: Hip-related pain (HRP) is a movement-related condition; however, previous biomechanics research into HRP have concentrated on male-dominated cohorts and focused people undergoing surgical intervention. As result, little known about the biomechanical impairments of women with those not seeking surgery. Therefore, aims this study were threefold: (i) to evaluate differences in lower-limb joint work between football players without HRP, (ii) explore relationship person’s burden (iii) determine whether any potential differences/relationships sex-dependent. Methods: Football aged 18-50 years eligible participate. For group, participants if they presented 6-month history HRP; whereas control no or lower-back pain/injury over six months. A total 88 (23 women) 30 asymptomatic controls (13 participated. Biomechanical data collected during walking single-leg drop jumps (SLDJ). was quantified using International Hip Outcome Tool (iHOT33). Between-group relationships done assessed linear regressions incorporating sex-based interactions. Results: Walking: No variables different footballers independent sex, nor evident. SLDJ: sex-specific interaction present for knee’s relative contribution negative done, demonstrating lower compared their female peers (37.7% vs 42.4%, P=0.04). The iHOT33 significantly associated positive (P=0.03 <0.01) (P=0.02 by hip as well ankle 0.01), sex Discussion: Overall, few observed HRP. Only one significant between-group difference revealed, involving knee only, providing further insight that may be modified sex. In addition, greater self-reported tended display SLDJ. Rehabilitation programs should target these normalize high impact tasks. COI statement: Funding supplied NHMRC (GNT:1088683).