نوع مقاله : مقاله پژوهشی
نویسندگان
1 نویسندۀ مسؤول، گروه علوم ورزشی، دانشگاه قم، قم، ایران.
2 گروه علوم ورزشی، دانشگاه قم، قم، ایران.
کلیدواژهها
عنوان مقاله English
نویسندگان English
Introduction: Plyometric and high intense interval training (HIIT) is an important part of volleyball. Zinc supplement can be used in the development of skeletal growth, to increase bone formation and also to prevent osteoporosis. The purpose of this research was to compare two methods of plyometric and HIIT during four weeks of zinc supplementation on two growth factors, growth hormone and serum-like growth factor-1, in teenage volleyball players at the age of skeletal growth spurt
Methods: For this purpose, 57 active and healthy teenage volleyball players (age: 13±0.94 years, height: 1.77±0.08 m, weight: 59.10±28.04 kg, and BMI: 18.2±76.13 kg/m2) were randomly selected as participants in six groups including: 1- plyometric exercise and zinc supplementation (10 people), 2- plyom exercise and placebo (8 people), 3- volleyball training and zinc supplement (9 people), 4- volleyball training control group and placebo (11 people), 5- HIIT group and zinc supplement (10 people) and 6- HIIT and placebo group (9 people) were divided. The training plan was three sessions a week. Supplementation groups also received 15 mg zinc gluconate tablets daily.
Results: The between-group results showed a significant increase in the amounts of growth factors after four weeks in the research groups (P<0.001). The follow-up test post hoc results showed the difference between the control group and other study groups (P<0.05).
Conclusion: Therefore, due to the increase in the amount of growth factors in young volleyball athletes, both plyometric and intense interval training methods as well as zinc supplementation are recommended.
کلیدواژهها English
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