Akehi Kazuma, Long Blaine C, Warren Aric J, Goad Carla L
1Department of Kinesiology and Sports Science, University of Nebraska at Kearney, Kearney, Nebraska; 2Athletic Training Department, Central Michigan University, Mt Pleasant, Michigan; 3School of Applied Health and Educational Psychology, Oklahoma State University, Stillwater, Oklahoma; and 4Department of Statistics, Oklahoma State University, Stillwater, Oklahoma.
J Strength Cond Res. 2016 Sep;30(9):2482-92. doi: 10.1519/JSC.0000000000001357.
Akehi, K, Long, BC, Warren, AJ, and Goad, CL. Ankle joint angle and lower leg musculotendinous unit responses to cryotherapy. J Strength Cond Res 30(9): 2482-2492, 2016-The use of cold application has been debated for its influence on joint range of motion (ROM) and stiffness. The purpose of this study was to determine whether a 30-minute ice bag application to the plantarflexor muscles or ankle influences passive ankle dorsiflexion ROM and lower leg musculotendinous stiffness (MTS). Thirty-five recreationally active college-aged individuals with no history of lower leg injury 6 months before data collection volunteered. On each testing day, we measured maximum passive ankle dorsiflexion ROM (°) and plantarflexor torque (N·m) on an isokinetic dynamometer to calculate the passive plantarflexor MTS (N·m per degree) at 4 joint angles before, during, and after a treatment. Surface electromyography amplitudes (μV), and skin surface and ambient air temperature (°C) were also measured. Subjects received an ice bag to the posterior lower leg, ankle joint, or nothing for 30 minutes in different days. Ice bag application to the lower leg and ankle did not influence passive ROM (F(12,396) = 0.67, p = 0.78). Passive torque increased after ice bag application to the lower leg (F(12,396) = 2.21, p = 0.011). Passive MTS at the initial joint angle increased after ice bag application to the lower leg (F(12,396) = 2.14, p = 0.014) but not at the other joint angles (p > 0.05). Surface electromyography amplitudes for gastrocnemius and soleus muscles increased after ice application to the lower leg (F(2,66) = 5.61, p = 0.006; F(12,396) = 3.60, p < 0.001). Ice bag application to the lower leg and ankle joint does not alter passive dorsiflexion ROM but increases passive ankle plantarflexor torque in addition to passive ankle plantarflexor MTS at the initial joint angle.
明宏、K、朗、BC、沃伦、AJ和戈德、CL。踝关节角度和小腿肌肉肌腱单位对冷冻疗法的反应。《力量与体能研究杂志》30(9):2482 - 2492，2016年——冷敷对关节活动范围（ROM）和僵硬程度的影响一直存在争议。本研究的目的是确定对跖屈肌或踝关节应用30分钟冰袋是否会影响被动踝关节背屈ROM和小腿肌肉肌腱僵硬程度（MTS）。35名在数据收集前6个月无小腿损伤史的活跃的大学生志愿者参与了研究。在每个测试日，我们在等速测力计上测量最大被动踝关节背屈ROM（°）和跖屈扭矩（N·m），以计算治疗前、治疗期间和治疗后4个关节角度的被动跖屈MTS（N·m/度）。还测量了表面肌电图幅度（μV）以及皮肤表面和环境空气温度（°C）。在不同日期，受试者接受在小腿后部、踝关节放置冰袋或不进行任何处理30分钟。对小腿和踝关节应用冰袋不影响被动ROM（F(12,396)=0.67，p = 0.78）。对小腿应用冰袋后被动扭矩增加（F(12,396)=2.21，p = 0.011）。对小腿应用冰袋后初始关节角度的被动MTS增加（F(12,396)=2.14，p = 0.014），但在其他关节角度没有增加（p>0.05）。对小腿应用冰袋后腓肠肌和比目鱼肌的表面肌电图幅度增加（F(2,66)=5.61，p = 0.006；F(12,396)=3.60，p<0.001）。对小腿和踝关节应用冰袋不会改变被动背屈ROM，但除了初始关节角度的被动踝关节跖屈MTS外，还会增加被动踝关节跖屈扭矩。
