Książek Anna, Dziubek Wioletta, Pietraszewska Jadwiga, Słowińska-Lisowska Małgorzata
Department of the Biological and Motor Basis of Sport, University School of Physical Education, Wroclaw, Poland.
Department of Rehabilitation in Internal Diseases, University School of Physical Education, Wroclaw, Poland.
Biol Sport. 2018 Jun;35(2):191-196. doi: 10.5114/biolsport.2018.74195. Epub 2018 Feb 15.
There is a growing body of evidence for a role of vitamin D in muscle function and for its influence on athletic performance, injury profile and recovery in well-trained athletes. The aim of our study was to assess the relationship between 25(OH)D levels and hand grip strength, lower limb isokinetic strength and muscle power in elite judoists. We enrolled 25 Polish elite judoists. The mean age was 21.9±9.8 years, the mean height was 179.2±6.6 cm, the mean body mass was 79.1±8.7 kg, and the mean career duration was 11.5±3.9 years. Serum levels of 25(OH)D and parathormone (PTH) were measured by electrochemiluminescence (ECLIA) using the Elecsys system (Roche, Switzerland). Serum calcium was determined by colorimetry using the Konelab 60 system from bioMérieux (France). Lower limb strength was tested with the Biodex Multi-Joint 4 Isokinetic Dynamometer (Biodex Medical System, New York, USA), and hand grip strength was measured with a manual dynamometer (TAKEI, Japan). Muscle power was determined with the electronic jump mat OptoJump (Microgate, Bolzano, Italy). Our study showed decreased serum 25(OH)D levels in 80% of the professional judoists. The results also demonstrated a statistically significant positive correlation between vitamin D levels and left hand grip strength, muscle power assessed by vertical jump, and total work in left and right knee extensors at an angular velocity of 60°/s. Based on our results it can be concluded that in well-trained professional athletes, there may be a relationship between serum levels of 25(OH)D and skeletal muscle strength, power, and work.
越来越多的证据表明维生素D在肌肉功能中发挥作用，并对训练有素的运动员的运动表现、受伤情况和恢复产生影响。我们研究的目的是评估25（OH）D水平与精英柔道运动员握力、下肢等速肌力和肌肉力量之间的关系。我们招募了25名波兰精英柔道运动员。平均年龄为21.9±9.8岁，平均身高为179.2±6.6厘米，平均体重为79.1±8.7千克，平均职业生涯时长为11.5±3.9年。使用罗氏公司（瑞士）的Elecsys系统通过电化学发光法（ECLIA）测定血清25（OH）D和甲状旁腺激素（PTH）水平。使用法国生物梅里埃公司的Konelab 60系统通过比色法测定血清钙。使用美国纽约Biodex医疗系统公司的Biodex多关节4等速测力计测试下肢力量，使用日本TAKEI的手动测力计测量握力。使用意大利博尔扎诺Microgate公司的电子跳垫OptoJump测定肌肉力量。我们的研究表明，80%的职业柔道运动员血清25（OH）D水平降低。结果还显示，维生素D水平与左手握力、垂直跳评估的肌肉力量以及左右膝伸肌在60°/秒角速度下的总功之间存在统计学上显著的正相关。根据我们的研究结果可以得出结论，在训练有素的职业运动员中，血清25（OH）D水平与骨骼肌力量、功率和功之间可能存在关联。
