Igawa Tatsuya, Hara Tsuyoshi, Ishizaka Masahiro, Sawaya Yohei, Ito Akihiro, Yakabi Akihiro, Kubo Akira
Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.
Department of Rehabilitation, International University of Health and Welfare Hospital, Japan.
J Phys Ther Sci. 2021 Apr;33(4):339-344. doi: 10.1589/jpts.33.339. Epub 2021 Apr 6.
[Purpose] Changes in the muscle performance of professional motorized athletes using pycnogenol-containing supplements have not been clarified. The purpose of this study was to evaluate the changes in muscle strength and endurance of professional cyclists during 4 weeks of training with the use of PycnoRacer. [Participants and Methods] Eight professional cyclists were requested to consume PycnoRacer twice/day for 4 weeks. The muscle endurance test consisted of 50 consecutive knee flexion and extension exercises at 180°/sec using an isokinetic torque machine before and after PycnoRacer administration. The athletes' body composition, including leg muscle mass, was also measured. [Results] The maximum flexor muscle torque and 41st-50th flexion muscle torque values significantly improved after supplement consumption (average improvement of 8.5%; range, 13.3-67.2%). The leg muscle mass and body composition did not differ significantly between the two conditions. The participants showed an average improvement of 31.8% (range, 0.9-67.8%) in their total work with cycling training. No adverse events were observed. [Conclusion] The use of PycnoRacer may improve training, muscle strength, and endurance, but not muscle mass.
[目的] 使用含碧萝芷补充剂的职业机动运动员的肌肉性能变化尚未明确。本研究的目的是评估职业自行车运动员在使用PycnoRacer进行4周训练期间肌肉力量和耐力的变化。[参与者和方法] 8名职业自行车运动员被要求每天服用PycnoRacer两次，持续4周。肌肉耐力测试包括在服用PycnoRacer前后，使用等速扭矩机以180°/秒的速度连续进行50次膝关节屈伸运动。还测量了运动员的身体成分，包括腿部肌肉质量。[结果] 补充剂服用后，最大屈肌扭矩和第41-50次屈伸肌扭矩值显著提高（平均提高8.5%；范围为13.3-67.2%）。两种情况下的腿部肌肉质量和身体成分没有显著差异。参与者在自行车训练中的总工作量平均提高了31.8%（范围为0.9-67.8%）。未观察到不良事件。[结论] 使用PycnoRacer可能会改善训练、肌肉力量和耐力，但不会增加肌肉质量。
