Naczk Mariusz, Naczk Alicja, Brzenczek-Owczarzak Wioletta, Arlet Jarosław, Adach Zdzisław
Department of Physiology, Faculty of Physical Culture, Gorzow Wielkopolski, The Eugeniusz Piasecki Academy of Physical Education, Poznan, Poland -
J Sports Med Phys Fitness. 2016 Mar;56(3):223-31. Epub 2015 Mar 13.
The aim of this study was to evaluate the influence of inertial training performed with different movement velocities on elbow flexor and extensor strength and power.
Thirty-eight male physical education students were divided into training and control groups. The two training groups performed inertial training three times per week for five weeks using the Inertial Training Measurement System. Elbow joint flexors and extensors were trained using different maximal movement velocities: 7.50 rad·s(-1) in the faster (TF) group and 5.76 rad·s(-1) in the slower (TS) group. Before and after training, we evaluated maximum force and power of elbow flexors and extensors muscles under training conditions, maximum torque and power of elbow flexors and extensors muscles under isokinetic conditions and maximal power output achieved during upper body Ergometer Test.
Training induced significant increases in elbow flexor force (28.4% in TF and 13.7% in TS) and power (37.7% in TF and 12.4% in TS) measured under training conditions. However, changes in the elbow flexors in the TF group were greater than in the TS group. Elbow extensor force and power measured under inertial conditions increased significantly only in the TF group; 12.5% and 21.1%, respectively. Moreover, the EMG amplitude of the biceps brachii and triceps brachii and upper limb muscle mass increased in both training groups. Measurements made under isokinetic conditions indicated that torque and power improved only in the elbow flexors, no changes in maximal power output were observed during the upper limb Ergometer Test.
The short-term inertial training resulted in significant elbow muscles strength and power improvements. ITMS training induced also the increase of upper limbs muscle mass and the increase of EMG activity of muscles during flexion and extension of elbow. Moreover, greater movement velocities seem to be a benefit for strength and power enhancement. However, further studies are needed to confirm this suggestion.
本研究旨在评估不同运动速度下的惯性训练对肘屈肌和伸肌力量及功率的影响。
38名男性体育专业学生被分为训练组和对照组。两个训练组使用惯性训练测量系统，每周进行三次惯性训练，共持续五周。使用不同的最大运动速度对肘关节屈肌和伸肌进行训练：较快组（TF）为7.50弧度·秒⁻¹，较慢组（TS）为5.76弧度·秒⁻¹。在训练前后，我们评估了训练条件下肘屈肌和伸肌的最大力量和功率、等速条件下肘屈肌和伸肌的最大扭矩和功率以及上身测力计测试期间达到的最大功率输出。
训练导致训练条件下测量的肘屈肌力量（TF组增加28.4%，TS组增加13.7%）和功率（TF组增加37.7%，TS组增加12.4%）显著增加。然而，TF组肘屈肌的变化大于TS组。仅在TF组中，惯性条件下测量的肘伸肌力量和功率显著增加，分别增加了12.5%和21.1%。此外，两个训练组肱二头肌和肱三头肌的肌电图幅度以及上肢肌肉质量均增加。在等速条件下进行的测量表明，仅肘屈肌的扭矩和功率有所改善，在上身测力计测试期间未观察到最大功率输出的变化。
短期惯性训练导致肘肌力量和功率显著提高。ITMS训练还导致上肢肌肉质量增加以及肘关节屈伸期间肌肉肌电图活动增加。此外，更大的运动速度似乎有利于力量和功率的增强。然而，需要进一步的研究来证实这一观点。
