نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری بیومکانیک ورزشی، دانشکده علوم ورزشی، دانشگاه بوعلی سینا، همدان، ایران.
2 استاد بیومکانیک ورزشی، دانشکده علوم ورزشی، دانشگاه بوعلی سینا، همدان، ایران.
3 کارشناسی ارشد بیومکانیک ورزشی، دانشکده علوم ورزشی، دانشگاه بوعلی سینا، همدان، ایران.
چکیده
زمینه و هدف: تقویت عضلات ناحیه پشت از جمله عضله پشتی بزرگ و ذوزنقه جزء اصلی برنامه های تمرینات قدرتی را تشکیل میدهد. هدف از این مطالعه مقایسه فعالیت ماهیچه نگاری عضلات پشتی بزرگ و ذوزنقه در دو نوع مختلف از تمرینات قدرتی بود. روش تحقیق: در این مطالعه نیمه تجربی، 12 مرد (سن: 3/19±23/4 سال، وزن بدن: 2/84±78/5 کیلوگرم، قد: 4/28± 179/8 سانتی متر) که با اجرای تمرینات قدرتی و کار با وزنه آشنایی داشتند، شرکت کردند. فعالیت ماهیچه نگاری سطحی عضلات پشتی بزرگ و ذوزنقه فوقانی، میانی و تحتانی حین اجرای تمرینات کشش به پایین لت و پارویی سیم کش در سه وضعیت (دست ها باز، موازی و نزدیک به یکدیگر) ثبت شد. داده ها با روش آماری آنالیز واریانس با اندازه های تکراری تجزیه و تحلیل شدند (0/05>p). یافته ها: عضله پشتی بزرگ در حرکت کشش به پائین لت و در وضعیت دست ها باز، بیشترین فعالیت را نشان داد (0/003=p). همچنین هر سه بخش عضله ذوزنقه در حرکت پارویی سیم کش در هر سه وضعیت دستها فعالیت بیشتری نسبت به حرکت کشش به پائین لت داشت (0/001=p، p=0/01 ،p=0/001). نتیجه گیری: یافته های مطالعه حاضر نشان داد که برای تقویت عضله پشتی بزرگ حرکت کشش به پائین لت در حالت دست ها باز موثر است. در حالی که برای تقویت عضله ذوزنقه، حرکت پارویی سیم کش اثر بخشی تمرین را افزایش خواهد داد.
کلیدواژه‌ها
عنوان مقاله [English]
The comparison of the electromyography activities in the latissimus dorsi and trapezius muscles during two types of strength training
نویسندگان [English]
- behrouz hajilou 1
- Mehrdad Anbarian 2
- Mojtaba Golparian 3
1 PhD candidate of Sports Biomechanics, Bu Ali Sina University, Hamedan, Iran.
2
3 MSc in Sports Biomechanics, Bu Ali Sina University, Hamedan, Iran.
چکیده [English]
Background and Aim: Strengthen the back muscles such as trapezius and latissimus dorsi muscles can be considered as an essential part of any strength training program. The purpose of this study was to compare the electromyography activities in the latissimus dorsi and trapezius muscles during two different types of strength exercises. Materials and Methods: Twelve males (age: 23.4±3.19 years, weight: 78.5±2.84 kg, height: 179.8±4.28 cm) who were familiar with strength training exercises participated in this quasi-experimental study. Surface electromyography activity of the latissimus dorsi and trapezius (upper, middle and lower portions) muscles were recorded during performing lat pull-down and row cable exercises with different hands positions namely, close, wide and parallel grip. ANOVA with repeated measures was employed for data analyses. Results:The latissimus dorsi muscle indicated significantly greater electromyography activity during lat pull-down exercise with the wide grip position compared to other positions. All parts of the trapezius muscle showed greater activity during performing row cable exercise in all three hand grip positions in comparison with lat-pull down exercise. Conclusion: The results indicate that lat pull-down movement using the wide grip hand position could affects the activities of latissimus dorsi muscle whereas, the row cable exercise is more effective for strengthening the trapezius muscle.
کلیدواژه‌ها [English]
- Latissimus dorsi
- Trapezius
- Lat pull-down movement
- Row cable exercise
- Electromyography
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