Relationship between Nordic hamstring strength and maximal voluntary eccentric, concentric and isometric knee flexion torque.
Relationship between Nordic hamstring strength and maximal voluntary eccentric, concentric and isometric knee flexion torque.
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DOI：
10.1371/journal.pone.0264465
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发表时间：
2022
期刊：
影响因子：
3.7
通讯作者：
Nosaka K
中科院分区：
文献类型：
--
作者：
Nishida S;Nakamura M;Kiyono R;Sato S;Yasaka K;Yoshida R;Nosaka K
进行北欧腿筋锻炼是为了防止膝屈肌拉伤，并用于评估其受伤风险。然而，北欧腿筋力量到底意味着什么尚不清楚。我们研究了北欧腿筋力量与等速测力计测量的膝屈肌最大随意收缩 (MVC) 扭矩之间的关系。十六名没有经历过腿筋拉伤的健康年轻男性参与了这项研究。在北欧腿筋训练中，要求每位参与者在 3 秒内尽可能向前倾斜（约 30°/秒），并在运动过程中测量优势腿踝关节处的力。力乘以小腿长度并转换为扭矩。在 30°、45°、60° 和 90° 膝关节屈曲角度下等长测量膝屈肌的 MVC 扭矩，并在俯卧位的优势腿屈曲 10°–90° 时以 30°/s 和 60°/s 的同心和偏心角度测量膝屈肌的 MVC 扭矩。使用皮尔逊相关系数评估因变量之间的相关性。 Nordic 腿筋扭矩峰值范围为 96.8–163.5 Nm，MVC 偏心扭矩峰值范围在 30°/s 时为 50.7–109.4 Nm，在 60°/s 时为 59.2–121.2 Nm。 Nordic 腘绳肌峰值扭矩和偏心膝关节弯曲扭矩峰值之间没有明显的相关性（r = 0.24–0.3，p = 0.26–0.4）。 Nordic 腘绳肌扭矩和等长收缩 (r = -0.03–0.1, p = 0.71–0.92) 和向心收缩 (r = 0.28–0.49, p = 0.053–0.29) 的 MVC 扭矩也是如此。这些结果表明，北欧腿筋力量与等速测力计测量的膝屈肌扭矩无关。除了静态和动态腘绳肌力量之外，可能还有其他因素影响北欧腘绳肌力量。
Nordic hamstring exercise is performed to prevent knee flexor muscle strain injuries and used to assess their injury risks. However, what exactly Nordic hamstring strength indicates is not clear. We investigated the relationship between Nordic hamstring strength and maximal voluntary contraction (MVC) torque of the knee flexors measured by an isokinetic dynamometer. Sixteen healthy young men who had not experienced hamstring strain injuries participated in the study. In Nordic hamstring, each participant was instructed to lean forward as far as possible in 3 s (approximately 30°/s), and force at the ankle joint of the dominant leg was measured during the movement. The force was multiplied by lower leg length and converted into torque. MVC torque of the knee flexors was measured isometrically at 30°, 45°, 60°, and 90° knee flexion joint angles, and concentrically and eccentrically at 30°/s and 60°/s in 10°–90° knee flexion for the dominant leg in a prone position. Correlations among the dependent variables were assessed using Pearson’s correlation coefficients. Peak Nordic hamstring torque ranged 96.8–163.5 Nm, and peak MVC eccentric torque ranged 50.7–109.4 Nm at 30°/s and 59.2–121.2 Nm at 60°/s. No significant correlations were evident between the peak Nordic hamstring torque and peak eccentric knee flexion torque (r = 0.24–0.3, p = 0.26–0.4). This was also the case for the Nordic hamstring torque and MVC torque of isometric (r = −0.03–0.1, p = 0.71–0.92) and concentric contractions (r = 0.28–0.49, p = 0.053–0.29). These results show that Nordic hamstring strength is not associated with the knee flexor torque measured by an isokinetic dynamometer. It may be that other factors than static and dynamic hamstring strengths affect Nordic hamstring strength.
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影响因子：
2.8
作者：
Lee JWY;Li C;Yung PSH;Chan KM
通讯作者：
Chan KM
影响因子：
4.1
作者：
Timmins, Ryan G.;Filopoulos, Dean;Opar, David A.
通讯作者：
Opar, David A.
影响因子：
4.8
作者：
Schuermans, Joke;Danneels, Lieven;Witvrouw, Erik
通讯作者：
Witvrouw, Erik
影响因子：
1
作者：
Struzik, Artur;Konieczny, Grzegorz;Rokita, Andrzej
通讯作者：
Rokita, Andrzej
DOI：
10.1123/ijspp.3.2.131
发表时间：
2008-06-01
影响因子：
3.3
作者：
Cormack, Stuart J.;Newton, Robert U.;Doyle, Tim L. A.
通讯作者：
Doyle, Tim L. A.