Cady Kathrine P, De Ste Croix Mark, Deighan Martine
Sports Therapy University of Hertfordshire.
Education and Applied Science University of Gloucestershire.
Int J Sports Phys Ther. 2024 Jun 1;19(6):714-723. doi: 10.26603/001c.117775. eCollection 2024.
Reduced dorsiflexion range of motion (DFROM) which is commonly seen following lateral ankle sprain (LAS) has the potential to influence lower extremity biomechanics which have been linked to increased injury risk in the female athlete. Current research on the effect of sex and LAS history on DFROM is limited.
HYPOTHESIS/PURPOSE: This study had three aims 1) to determine the effect of sex, leg dominance and LAS history on DFROM, 2) to determine the effect of sex and LAS history on magnitude of DFROM symmetry and 3) to examine the association of sex on direction (whether dominant or non-dominant limb had the higher DFROM) of symmetry.
Cross-Sectional Study.
DFROM was measured bilaterally in 105 recreational athletes all participating in multidirectional sports using the tape measurement method during the weight bearing lunge test (WBLT). A mean of three measurements was used for analysis. A 3-way mixed ANOVA was carried out to determine the interaction between sex, LAS history and leg dominance on DFROM and a 2-way ANOVA for the effect of sex and LAS history on asymmetry. A chi-square test was used to determine the association of sex and direction of asymmetry.
The results indicate no significant effect of sex, LAS history, and leg dominance on DFROM (p=0.65). Main effects were significant for sex and LAS on DFROM. The mean asymmetry for all participants was reported as 12.25±14.76cm. No significant effect of sex and LAS history on magnitude of asymmetry was reported. There was a significant association of sex and direction of asymmetry (χ2(1) = 11.26, p = 0.00). Sixty-five-point two percent of males were shown to have higher DFROM of their non-dominant limb compared to 75% of females who were higher in their dominant limb.
Findings from this study suggest that DFROM is affected by sex and LAS history. While females have increased DFROM compared to males, those with LAS history are more likely to have a decreased DFROM on the involved side. The results also indicate that interlimb asymmetries in DFROM are present in athletes, therefore practitioners should exercise caution when using bilateral comparisons in injury and return to play assessments.
2b.
踝关节外侧扭伤（LAS）后常见的背屈活动度（DFROM）降低，可能会影响下肢生物力学，而这与女性运动员受伤风险增加有关。目前关于性别和LAS病史对DFROM影响的研究有限。
假设/目的：本研究有三个目的：1）确定性别、腿的优势程度和LAS病史对DFROM的影响；2）确定性别和LAS病史对DFROM对称性大小的影响；3）研究性别与对称性方向（优势或非优势肢体的DFROM是否更高）之间的关联。
横断面研究。
在负重弓步试验（WBLT）期间，使用卷尺测量法对105名参加多方向运动的休闲运动员的双侧DFROM进行测量。分析时采用三次测量的平均值。进行三因素混合方差分析以确定性别、LAS病史和腿的优势程度对DFROM的交互作用，并进行两因素方差分析以确定性别和LAS病史对不对称性的影响。使用卡方检验确定性别与不对称性方向之间的关联。
结果表明，性别、LAS病史和腿的优势程度对DFROM没有显著影响（p = 0.65）。性别和LAS对DFROM的主效应显著。所有参与者的平均不对称性报告为12.25±14.76厘米。未报告性别和LAS病史对不对称性大小有显著影响。性别与不对称性方向之间存在显著关联（χ2(1)=11.26，p = 0.00）。结果显示，65.2%的男性非优势肢体的DFROM更高，而75%的女性优势肢体的DFROM更高。
本研究结果表明，DFROM受性别和LAS病史影响。与男性相比，女性的DFROM增加，而有LAS病史的人受累侧的DFROM更有可能降低。结果还表明，运动员存在DFROM的肢体间不对称，因此从业者在损伤评估和恢复比赛评估中使用双侧比较时应谨慎。
2b。
