肌筋膜鬆弛術對沙灘木球運動員之關節活動度與握力影響

Effect of Myofascial Relaxation on Joint Activity and Grip Strength of Beach Woodball Players

背景：沙灘木球已連續五屆在亞洲沙灘運動會中成為必辦項目，但沙灘木球運動因沙灘特性而使擊球距離變短，造成選手前臂的負荷加重。目的：本研究以5分鐘肌筋膜鬆弛術介入沙灘木球的長距離擊球揮桿，主要目的想快速恢復慣用手肘關節活動角度（彎曲、前臂旋前、前臂旋後）與手腕關節活動角度（彎曲、伸直），次要目的為恢復慣用手的握力。方法：招募20～29歲的大學木球選手共24位，重複測量長距離擊球揮桿前、重複揮桿36次後與5分鐘肌筋膜鬆弛術介入後的慣用手肘關節角度（彎曲、前臂旋前、前臂旋後）、腕關節（彎曲、伸直）與握力，並以單因子重複量數變異數分析（Repeated measure ANOVA）來作量性分析，用Bonferroni進行事後檢定分析。結果：肘關節的角度變化在肌筋膜鬆弛術介入後與揮桿前在彎曲角度有正向變化且達顯著差異（p<.05）；重複揮桿36次後―肌筋膜鬆弛術介入後肘關節（彎曲、前臂旋前、前臂旋後）角度有正向變化且達顯著差異（p<.05）。腕關節的角度變化在重複揮桿36次後-肌筋膜鬆弛術介入後有正向變化且達顯著差異（p<.05），重複揮桿36次前後、揮桿前與肌筋膜鬆弛術介入後，其腕關節角度（彎曲、伸直）變化都未達顯著差異。慣用手握力有達顯著差異，但事後檢定各組均未達顯著差異。結論：5分鐘的肌筋膜鬆弛術介入，能幫助運動員重複揮桿36次後其慣用手肘關節（彎曲、前臂旋前、前臂旋後）與腕關節（彎曲、伸直）的角度有正向變化，但對其慣用手握力的恢復幫助不大。

Background: Beach woodball has been an event in the Asian Beach Games for five consecutive sessions, but the hitting distance is shorter due to the characteristics of the beach, causing the load on players’ forearms to increase. Purposes: This study used a five-minute myofascial relaxation technique to intervene in the long-distance hitting swing of beach woodball. The main purpose is to quickly restore the elbow joint movement angle of the dominant hand (bending, forearm pronation, forearm supination) and wrist joint movement angle (bending and straightening). The secondary purpose is to restore the grip strength of the dominant hand. Method: A total of 24 college woodball players aged 20-29 were recruited. The elbow joint angle (bending, forearm pronation, forearm supination), wrist joint (bending and straightening) and grip strength of the dominant hand after repeated swinging 36 times and intervention of myofascial relaxation for five minutes were measured before long-distance swinging. The single factor repeated measure ANOVA was used for quantitative analysis, and Bonferroni was used for post-test analysis. Results: The angle change of the elbow joint had positive change and significant difference in bending angle after myofascial relaxation intervention and before swinging (p<.05). After repeated swing-myofascial relaxation intervention, the angle of the elbow joint (bending, forearm pronation, forearm pronation) has positive change and significant difference (p<.05). After repeated swing-myofascial relaxation intervention, the angle of the wrist joint has positive change and significant difference (p<.05). Before swing and after myofascial relaxation intervention, the angle of the wrist joint (bending and straightening) has no significant difference before and after repeated swinging36 times. The grip strength of the dominant hand was significantly different, but no significant difference was found in each group after verification. Conclusion: Five-minute myofascial relaxation intervention can help athletes to make positive changes in the angles of the elbow joint (bending, forearm pronation, forearm pronation) and wrist joint (bending, unbend) of their dominant hand after repeated swinging 36 times, but it is not helpful to restore the grip strength of their dominant hand.