TY - JOUR
T1 - Sex differences in the relationship of hip strength and functional performance to chronic ankle instability scores
AU - Lu, Junlan
AU - Wu, Zhigang
AU - Adams, Roger
AU - Han, Jia
AU - Cai, Bin
N1 - Funding Information:
This work was supported by the Scientific research project of Hainan Health Committee (Grant No. 20A200490).
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Background: While decreased hip abductor strength, functional performance, and self-reported instability scores have all been shown in association with CAI, any sex difference in the relationship between these indicators is unclear. This study was to determine whether sex differences are present in the relationship between these indicators in individuals with CAI. Methods: Thirty-two women and twenty-nine men with unilateral CAI took part. Hip abductor strength and functional performance were respectively assessed using a hand-held dynamometer and the figure-8-hop test. All 61 participants scored the Cumberland Ankle Instability Tool (CAIT) for self-reported ankle instability. Independent sample t-tests and correlation analysis were conducted. Results: Normalized hip abductor strength and functional performance measures for females were lower than for males. The self-reported ankle instability CAIT score, where higher values represent less instability, was significantly and positively correlated with both normalized hip abductor strength (p = 0.003) and functional performance (p = 0.001) on the affected side in females, but not in males (p = 0.361 and p = 0.192 respectively). Conclusions: Sex differences were observed in that there were significant relationships between normalized hip abductor strength, functional performance, and CAIT scores in female CAI participants, but not males, suggesting that CAI evaluation and rehabilitation strategies should be sex-specific. Highlights: In females with CAI, hip abductor strength and functional performance showed significant relationships with self-reported instability scores.Correspondingly, in clinical practice with individuals with CAI, evaluation criteria may be formulated according to these observed sex differences.Sex differences should be factored into the evaluation and treatment of CAI individuals.Hip strength assessment should be employed with CAI individuals.Hip strengthening and functional hopping may be recommended for the rehabilitation of CAI, especially in female patients.
AB - Background: While decreased hip abductor strength, functional performance, and self-reported instability scores have all been shown in association with CAI, any sex difference in the relationship between these indicators is unclear. This study was to determine whether sex differences are present in the relationship between these indicators in individuals with CAI. Methods: Thirty-two women and twenty-nine men with unilateral CAI took part. Hip abductor strength and functional performance were respectively assessed using a hand-held dynamometer and the figure-8-hop test. All 61 participants scored the Cumberland Ankle Instability Tool (CAIT) for self-reported ankle instability. Independent sample t-tests and correlation analysis were conducted. Results: Normalized hip abductor strength and functional performance measures for females were lower than for males. The self-reported ankle instability CAIT score, where higher values represent less instability, was significantly and positively correlated with both normalized hip abductor strength (p = 0.003) and functional performance (p = 0.001) on the affected side in females, but not in males (p = 0.361 and p = 0.192 respectively). Conclusions: Sex differences were observed in that there were significant relationships between normalized hip abductor strength, functional performance, and CAIT scores in female CAI participants, but not males, suggesting that CAI evaluation and rehabilitation strategies should be sex-specific. Highlights: In females with CAI, hip abductor strength and functional performance showed significant relationships with self-reported instability scores.Correspondingly, in clinical practice with individuals with CAI, evaluation criteria may be formulated according to these observed sex differences.Sex differences should be factored into the evaluation and treatment of CAI individuals.Hip strength assessment should be employed with CAI individuals.Hip strengthening and functional hopping may be recommended for the rehabilitation of CAI, especially in female patients.
KW - Ankle
KW - Functional performance
KW - Hip
KW - Rehabilitation
KW - Sex
UR - http://www.scopus.com/inward/record.url?scp=85126884380&partnerID=8YFLogxK
U2 - 10.1186/s13018-022-03061-0
DO - 10.1186/s13018-022-03061-0
M3 - Article
C2 - 35313904
AN - SCOPUS:85126884380
SN - 1749-799X
VL - 17
SP - 1
EP - 7
JO - Journal of Orthopaedic Surgery and Research
JF - Journal of Orthopaedic Surgery and Research
IS - 1
M1 - 173
ER -