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Combined Myo-Reps and Traditional Resistance Training Promotes Greater Muscle Hypertrophy Without Altering Acute Decorin and Interleukin-1β Responses in Resistance-Trained Men | ||
| New Approaches in Exercise Physiology | ||
| دوره 8، شماره 16، اسفند 2026 | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22054/nass.2026.94181.1245 | ||
| نویسندگان | ||
| Bagher rezaei* 1؛ Sadegh Amani Shalmazari2؛ Hamid Rajabi3؛ Bakhtiar Tartibian4 | ||
| 1PhD Student in Exercise Physiology, Kharazmi University (Tehran Branch), Tehran, Iran. | ||
| 2Associate Professor of Exercise Physiology, Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran | ||
| 3Professor of Exercise Physiology, Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran. | ||
| 4Professor of Exercise Physiology, Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Allameh Tabataba’i University, Tehran, Iran. | ||
| چکیده | ||
| Purpose: This study investigated the acute serum responses of decorin and interleukin-1β (IL-1β) and the effects of 8 weeks of Myo-reps, traditional, and combined resistance training on rectus femoris muscle thickness and lower-body strength in men. Methods: Thirty-six resistance-trained men (26.03 ± 4.22 years; BMI: 24.83 ± 3.05 kg/m²) were randomly assigned to traditional, Myo-reps, or combined training. Participants completed an 8-week program (3 sessions/week) with standardized volume and progressive intensity (75–85% 1RM). Serum decorin and IL-1β were measured before and immediately after the third training session during week 1. Rectus femoris muscle thickness was assessed by ultrasonography, and hack squat one-repetition maximum was measured before and after training. Data were analyzed using paired-samples t-tests and ANCOVA (p < 0.05). Results: No between-group differences were found for serum decorin (p = 0.81) or IL-1β (p = 0.67). Decorin decreased only in the traditional group (p = 0.03), whereas IL-1β remained unchanged in all groups. Rectus femoris muscle thickness increased in the Myo-reps (p = 0.02) and combined (p = 0.001) groups, but not in the traditional group (p = 0.07). Muscle thickness differed between groups (p = 0.01), with greater increases in the combined than the traditional group (p = 0.01). Hack squat strength improved in all groups (p = 0.001), with no between-group differences (p = 0.51). Conclusion: Combined Myo-reps and traditional resistance training produced greater increases in rectus femoris thickness than traditional resistance training alone without altering acute decorin or IL-1β responses. All protocols similarly improved lower-body strength. | ||
| کلیدواژهها | ||
| Muscle hypertrophy؛ Exercise-induced myokines؛ Extracellular matrix remodeling؛ Inflammatory biomarkers؛ ultrasonography؛ Strength adaptation | ||
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