التفاصيل البيبلوغرافية
| العنوان: |
Effects of Speed Bounding on Different Sloped Surface on Muscle Activation in Youth Male Sprinters. |
| المؤلفون: |
Sanpasitt, Chanawat, Intiraporn, Chaninchai, Yimlamai, Tossaporn |
| المصدر: |
Journal of Exercise Physiology Online; Apr2021, Vol. 24 Issue 2, p9-21, 13p |
| مصطلحات موضوعية: |
TIBIALIS anterior, EXTENSOR muscles, RECTUS femoris muscles, VASTUS lateralis, BICEPS femoris, PERSONAL coaching, GLUTEAL muscles |
| مستخلص: |
The purpose of this study was to determine whether there was a dose-response relationship between muscle activity during a propulsive phase of speed bounding on sloped surfaces in youth male sprinters. In a randomized, crossover counterbalanced design, 12 male sprinters (age: 15.75 ± 0.45 yrs, height: 1.72 ± 0.06 m), performed 4 sessions of speed bounding on 4 different sloped surfaces (0°, 3° 6°, and 9°). Each session comprised 5 trials of 10-m speed bounding, interspersed with a 5-min rest period between trials, which was separated by 7-day apart. Surface electromyography (EMG) was used to measure muscle activation of gluteus maximus (GM), rectus femoris (RF), vastus lateralis (VL), gastrocnemius medialis (GD), soleus (SL), tibialis anterior (TA), biceps femoris (BF), semitendinosus (SM), and pectoralis major (PM). Overall, muscle activation during speed bounding was significantly increased with increasing slopes surface in all muscles examined, except for BF and SM. The average EMG amplitude was highest in SL and VL, and was lowest in TA and PM in all slopes. In addition, the average time to peak EMG and rate of EMG rise increased across slopes in all muscles, with the higher values observed at 9° compared to 0°, 3°, and 6°. Our results indicate that there was a dose-dependent increase in muscle activation during a propulsive phase of speed bounding on a sloped surface, with a greater magnitude observed in the extensor muscles group compared to other muscles. This finding could have implications for coaches and personal trainers who wish to develop an appropriate training program to improve acceleration ability in youth sprinter. [ABSTRACT FROM AUTHOR] |
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