نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه رفتار حرکتی، دانشکده تربیت بدنی، دانشگاه تبریز، تبریز، ایران
2 گروه مدیریت آموزشی، دانشگاه فرهنگیان، تبریز، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Objective: The aim of this study was to investigate the electrical activity of erector spinae (ES) muscles in healthy adolescent girls during walking with and without motor dual task (DT). Methods: 20 healthy adolescent girls (all between 11 to 16 years old) participated in this study voluntarily. A VICON motion analysis system in synchronous with a MA300-1 electromyography system and bipolar surface electrodes was used to measure the electrical activity of EST6, EST10, and ESL3 during gait with and without DT. Repeated measure analysis of variance and paired sample t-test were used for statistical analysis. Results: showed that during gait with DT, the EMG activity of EST6, EST10, and ESL3 muscles were significantly greater than normal walking in both right and left stance phases (p=0.0001). Also, during swing phase of gait with DT, the EMG activity of studied muscles were significantly higher than normal walking (p<0.05). Without considering the effect of other factors, EST6 and ESL3 muscles had the highest and lowest intensities respectively (p=0.001). There was seen a significant interaction between DT and muscle factors in both stance and swing phases of gait (p=0.001). Conclusion: dual task has main effect on the EMG activity of ES muscles. The effect of DT on the activity of erector spinae muscle on different sites of spine was different. Regarding that motor dual task can increase the erector spinae muscles activity, designing exercises based on the motor dual task can improve muscle activity and attention division in healthy subjects and subjects with spine abnormalities.
کلیدواژهها [English]
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