Podgórski Tomasz, Nowak Alicja, Domaszewska Katarzyna, Mączyński Jacek, Jabłońska Magdalena, Janowski Jarosław, Ogurkowska Małgorzata B
Department of Physiology and Biochemistry, Poznan University of Physical Education, Poznań, Poland.
Department of Hygiene, Poznan University of Physical Education, Poznań, Poland.
PeerJ. 2020 Dec 16;8:e10355. doi: 10.7717/peerj.10355. eCollection 2020.
Regular exercise leads to changes in muscle metabolism. The consequence of this is the adaptation to higher training loads.The aim of this study was to evaluate biomechanical and biochemical parameters describing the functions of skeletal muscles in periods when changes in training forms were introduced.
Seventeen male sweep-oar rowers, members of the Polish national rowing team, participated. The study was carried out at the beginning and at the end of the preparatory period. In the first and second examination measurements of torques of selected muscle groups and blood biochemical analysis were performed.
There was observed a statistically significant decrease in the relative global force of the right lower limb between both terms of examination. A statistically significant increase in maximum torque was found for torso flexors. In the case of muscles responsible for torso rotation, a statistically significant decrease in the torque values of right torso rotators was observed. A significant difference was found with respect to creatine kinase activity, total testosterone concentration, total testosterone to cortisol ratio and total phenolics concentration ( < 0.05).
The study shows that the rowers' training should be more focused on building the strength of lower limbs to prevent the overload of lumbar spine and that the amount of force developed may be significantly affected by the antioxidant potential of rowers.
规律运动导致肌肉代谢发生变化。其结果是对更高训练负荷的适应。本研究的目的是评估在引入训练形式变化的时期描述骨骼肌功能的生物力学和生化参数。
17名波兰国家赛艇队的男性划桨手参与了研究。研究在准备期开始和结束时进行。在第一次和第二次检查中,对选定肌肉群的扭矩进行了测量,并进行了血液生化分析。
在两次检查期间,右下肢的相对整体力量在统计学上有显著下降。发现躯干屈肌的最大扭矩在统计学上有显著增加。在负责躯干旋转的肌肉方面,观察到右躯干旋转肌的扭矩值在统计学上有显著下降。在肌酸激酶活性、总睾酮浓度、总睾酮与皮质醇比值和总酚浓度方面发现了显著差异(P<0.05)。
该研究表明,赛艇运动员的训练应更侧重于增强下肢力量以防止腰椎过载,并且所产生的力量大小可能会受到赛艇运动员抗氧化潜力的显著影响。