کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5709523 | 1604181 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of age and sex on fatigability and recovery from a sustained maximal isometric voluntary contraction
ترجمه فارسی عنوان
اثرات سن و جنس بر میزان خستگی و بهبودی از انقباض دائمی حداکثر اندازه گیری شدید ثابت
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
سالخورده، خستگی مرکزی، الکترومیوگرافی، جنسیت، عضلات انقباض زانو، خستگی محیطی، فعال سازی داوطلبانه،
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
ارتوپدی، پزشکی ورزشی و توانبخشی
چکیده انگلیسی
The aim was to assess the effects of sex and age on fatigability and recovery from sustained maximal voluntary contraction (MVC) of the knee extensor muscles. The central (central activation ratio (CAR) and electrical activity amplitude) and peripheral (electrically evoked torque and muscle contractile properties) factors contributing to fatigue and recovery of 24 young adults (12 males) aged 23.2 ± 3.6 years and 20 older adults (12 males) aged 70.6 ± 4.4 years were compared. The increase in central and peripheral fatigue was greater (p ⩽ 0.01) in the young adults vs the older adults. Sex differences (p = 0.002) regarding MVC were attributed to the greater (p < 0.01) peripheral fatigue of males vs females. The recovery rate of MVC was greater (p < 0.001) in the young adults vs the older adults, with no sex effect. The recovery of MVC was correlated with the CAR in older adults (p = 0.001). Thus, the greater endurance observed with age is caused by differences in central and peripheral mechanisms, whereas the greater endurance in females is caused by a difference in a mechanism located within the muscle. The impaired recovery from fatigue in older adults relied more on the recovery of central factors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electromyography and Kinesiology - Volume 32, February 2017, Pages 61-69
Journal: Journal of Electromyography and Kinesiology - Volume 32, February 2017, Pages 61-69
نویسندگان
Rima Solianik, Lina KreivÄnaitÄ, Vytautas Streckis, Dalia MickeviÄienÄ, Albertas Skurvydas,