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ORIGINAL ARTICLE
Year : 2019  |  Volume : 23  |  Issue : 1  |  Page : 72-75

The effect of a high-intensity interval training on plasma vitamin D level in obese male adolescents


1 Department of Physical Education, Semnan University, Semnan, Iran
2 Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht; Student Research Committee, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3 Student Research Committee, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Correspondence Address:
Saeid Doaei
Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijem.IJEM_267_18

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Background: The worldwide increasing vitamin D deficiency in adolescents is alarming. The effect of high-intensity trainings on adolescent health is not clear. Object: This study aimed to examine the effect of a high-intensity interval training (HIIT) on plasma level of vitamin D in overweight male adolescents. Materials and Methods: About 96 overweight students aged 12–16 years from two high schools participated in the study. The schools were randomly assigned to the intervention group (n = 52) and the control group (n = 44). For the intervention group, HIIT was performed 3 days per week for 8 weeks, while the control group was asked to walk outdoors at the same time. Results: At the end of the study, the vitamin D level was increased to 1.21 ng/dl in the intervention group, whereas it decreased to 1.94 ng/dl in the control group (P = 0.003). Conclusion: About 8 weeks of HIIT improved plasma level of vitamin D in overweight male adolescents. More prolonged interventions consisted of both the sex and broader age ranges are warranted.


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