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طب ورزشی، جلد ۱۱، شماره ۱، صفحات ۶۱-۷۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Effects of Hypoxic and Normoxic Training in Altitude on HIF-1α and PGC-1α Levels in Elite Endurance Runners |
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| چکیده انگلیسی مقاله |
Introduction: Training at altitude or in a hypoxic environment has gained attention among athletes, coaches, and scientists to enhance sea-level performance. However, the efficacy of “Living-Low, Training-High, Training-Low” (LLTHTL) strategy to escalate the mechanisms associated with enhancing performance in the human athletes is still unknown. The present study aimed to investigate the effect of the LLTHTL on Hypoxia-Inducible Factor-1 alpha (HIF-1α) and peroxisome Proliferator-activated Receptor-Gamma Coactivator-1alpha (PGC-1α) levels in elite endurance runners. Methods: The study has a crossover design in University laboratory. Eight elite male runners (Mean±SD age: 24.50±3.96 years; Mean±SD height: 179.75±4.62 cm; Mean±SD body mass: 67.37±3.42 kg; Mean±SD body mass index: 20.85±1.11 kg/m²) took part in the research. After 4 weeks of Living-Low (LL), the athletes performed 4 weeks Training-High (TH) and then, 3 weeks training-low (TL). Main Outcome Measures: Anthropometric parameters, time trial (1500 m), PGC-1α, and HIF-1α levels were measured in four different time points: pre-LL, post-LL, post-TH, and post-TL. Results: There were no significant differences between the 4 time points for body mass and body mass index (P>0.05). The time trial was improved significantly (p < 0.001) at post-TH as well as post-TL compared with the pre-LL and post-LL. TH decreased HIF-1α level but did not affect PGC-1α. Besides, TL increased both HIF-1α and PGC-1α. Conclusion: Training at altitude reduces HIF-1α and training at sea-level increased PGC-1α and HIF-1α levels. Both types of training induced an improvement in the time trial. Athletes and coaches seek advice on the effective training strategy to enhance performance at different altitudes. |
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| کلیدواژه‌های انگلیسی مقاله |
Training,hypoxia,Hypoxia-Inducible factor-1 alpha (HIF-1),Peroxisome proliferator-activated receptor-gamma coactivator-1alpha (PGC-1α) |
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| نویسندگان مقاله |
Rahman Soori |
Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
Mahla Mohamad Zadeh |
Department of Physical Eduction, Alborz Campus, University of Tehran, Tehran, Iran.
Amine Ghram |
Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
Siroos Choobineh |
Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
Roohallah Mohammadi Mirzaei |
Assistant Professor, Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Farhangian University, Tehran, Iran.
Fabrício Azevedo Voltarelli |
Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Brazil.
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| نشانی اینترنتی |
https://sshr.ut.ac.ir/article_77608_b5cebc1813b14e71e3e428a12c2610fa.pdf |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
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