Performance and Sport Rehabilitation Laboratory, Faculty of Sport Sciences, University of Castilla-La Mancha, Toledo, Spain.
Faculty of Humanities and Social Sciences, Comillas Pontifical University, Madrid, Spain.
PLoS One. 2019 Sep 10;14(9):e0222190. doi: 10.1371/journal.pone.0222190. eCollection 2019.
The continued practice of a sport linked to the unilateral predominance of the dominant side can provoke chronic asymmetric adaptations in the myotendinous structure and mechanical properties. Objectives: The main purpose was to determine whether asymmetry between the preferred and non-preferred lower limb is present in the lower limb tendon structure, muscle architecture and stiffness values of professional badminton players.
Sixteen male professional badminton players (age = 24.1 ± 6.7 years; body height = 177.90 ± 7.53 cm) participated in this study. The muscle architecture of the vastus lateralis (VL), medial gastrocnemius (MG) and lateral gastrocnemius (LG) and the structure of patellar and Achilles tendons were measured in the dominant and non-dominant lower limb with ultrasonography. Stiffness was also measured at the same points with a hand-held MyotonPro. Significant differences between the dominant and non-dominant lower limb were determined using Student's t test for related samples.
Bilateral differences were observed for thickness, width and cross-sectional area (CSA) in both tendons showing higher values for the dominant side: patellar tendon CSA (2.02 ± 0.64 vs. 1.51 ± 0.42 cm2; p < 0.05) and Achilles tendon CSA (1.12 ± 0.18 vs. 0.92 ± 0.28 cm2; p < 0.05). No significant differences were observed in muscle architecture and myotonic variables between the dominant and non-dominant lower limb.
The prolonged practice of badminton caused asymmetries in the CSA, width and thickness of the patellar and Achilles tendon between the dominant and non-dominant lower limbs. No bilateral differences were found in the muscle architecture of VL, MG and LG or in the stiffness of any muscle or tendon analyzed.
持续从事与优势侧单侧优势相关的运动可能会导致肌肉-肌腱结构和机械性能的慢性不对称适应。目的：主要目的是确定专业羽毛球运动员的下肢肌腱结构、肌肉结构和硬度值是否存在优势侧和非优势侧下肢之间的不对称性。
16 名男性职业羽毛球运动员（年龄=24.1±6.7 岁；身高=177.90±7.53cm）参与了这项研究。使用超声测量优势侧和非优势侧下肢的股外侧肌（VL）、内侧比目鱼肌（MG）和外侧比目鱼肌（LG）的肌肉结构以及髌腱和跟腱的结构。使用手持 MyotonPro 还在相同部位测量了硬度。使用配对样本 t 检验确定优势侧和非优势侧下肢之间的显著差异。
在两个肌腱的厚度、宽度和横截面积（CSA）方面均观察到双侧差异，优势侧的数值更高：髌腱 CSA（2.02±0.64 与 1.51±0.42cm2；p<0.05）和跟腱 CSA（1.12±0.18 与 0.92±0.28cm2；p<0.05）。优势侧和非优势侧下肢的肌肉结构和肌紧张变量无显著差异。
长期从事羽毛球运动导致优势和非优势下肢的髌腱和跟腱 CSA、宽度和厚度出现不对称。VL、MG 和 LG 的肌肉结构或分析的任何肌肉或肌腱的硬度均未发现双侧差异。
