Solleveld Henny, Slaets Bram, Goedhart Arnold, VandenBossche Luc
SportsInjuryLab, Dronten, The Netherlands.
Physical Rehabilitation and Sports Medicine, Ghent University Hospital, Gent, Belgium.
J Hum Kinet. 2022 Nov 8;84:21-31. doi: 10.2478/hukin-2022-0086. eCollection 2022 Oct.
The influence of asymmetry between masticatory muscles on postural control is still under debate and only few studies examined the impact of oral health on injury risk. The present study investigated the relationships between masticatory muscles asymmetry, oral health, postural control and the prevalence of (non-contact or traumatic) leg injuries in a sample of 144 male elite junior soccer players. sEMG of the masseter and temporal muscles was performed during maximum teeth clenching, postural control was tested by measuring sway velocity during the unipedal stance with eyes closed, while oral health and the number of leg injuries were assessed using a questionnaire. The time-1 assessment was repeated in a subgroup of 69 players after one year. Pearson and partial correlation coefficients and adjusted odds ratios (OR) were used to assess associations. Asymmetry between the masseter and temporalis muscles (AMTM, quantified as anteroposterior coefficient, APC) was associated with higher sway velocity on the dominant leg (using time-1 data partial r = -0.24, p = 0.004, using longitudinal data partial r = -0.40, p = 0.005). Higher prevalence of two or more leg injuries throughout a competitive season was associated with poor oral health (adjusted OR (95%CI) using time-1 data = 2.14 (1.02-4.46), using longitudinal data = 4.47 (1.25-15.96)). These results indicate that AMTM has a negative influence on the sway velocity of the dominant leg only, possibly because frequent balancing exercises on the non-dominant leg may counteract negative influences of AMTM. The association of oral health with leg injuries underlines the need for oral health promotion and monitoring strategies in sports.
咀嚼肌不对称对姿势控制的影响仍存在争议，仅有少数研究探讨了口腔健康对受伤风险的影响。本研究调查了144名男性精英青少年足球运动员样本中咀嚼肌不对称、口腔健康、姿势控制与（非接触性或创伤性）腿部损伤患病率之间的关系。在最大程度咬牙时进行咬肌和颞肌的表面肌电图检查，通过测量闭眼单脚站立时的摇摆速度来测试姿势控制，同时使用问卷评估口腔健康和腿部损伤数量。在69名运动员的亚组中，一年后重复进行时间1评估。使用Pearson和偏相关系数以及调整后的比值比（OR）来评估关联。咬肌和颞肌之间的不对称（AMTM，以前后系数APC量化）与优势腿较高的摇摆速度相关（使用时间1数据偏r = -0.24，p = 0.004，使用纵向数据偏r = -0.40，p = 0.005）。在整个比赛赛季中，两次或更多次腿部损伤的较高患病率与口腔健康状况不佳相关（使用时间1数据调整后的OR（95%CI）= 2.14（1.02 - 4.46），使用纵向数据= 4.47（1.25 - 15.96））。这些结果表明，AMTM仅对优势腿的摇摆速度有负面影响，可能是因为非优势腿频繁的平衡练习可能抵消AMTM的负面影响。口腔健康与腿部损伤之间的关联强调了在体育运动中促进口腔健康和监测策略的必要性。
