التفاصيل البيبلوغرافية
| العنوان: |
Muscle size and arterial stiffness after blood flow-restricted low-intensity resistance training in older adults. |
| المؤلفون: |
Yasuda, T., Fukumura, K., Fukuda, T., Uchida, Y., Iida, H., Meguro, M., Sato, Y., Yamasoba, T., Nakajima, T. |
| المصدر: |
Scandinavian Journal of Medicine & Science in Sports; Oct2014, Vol. 24 Issue 5, p799-806, 8p, 1 Black and White Photograph, 2 Charts, 2 Graphs |
| مصطلحات موضوعية: |
MUSCULAR atrophy, ANALYSIS of variance, BLOOD flow measurement, EXERCISE, HEMODYNAMICS, LEG, MAGNETIC resonance imaging, MUSCLE strength, RESEARCH funding, STATISTICS, DATA analysis, REPEATED measures design, DATA analysis software, DESCRIPTIVE statistics, OLD age, PREVENTION |
| مستخلص: |
Previous studies have shown that blood flow-restricted low-intensity resistance training (BFR-RT) causes muscle hypertrophy while maintaining arterial function in young adults. We examined the effects of BFR-RT on muscle size and arterial stiffness in older adults. Healthy subjects (ages 61–84 years) were divided into BFR-RT (n = 9) or non-training control (CON; n = 10) groups. The BFR-RT group performed 20% and 30%, respectively, of one repetition maximal (1-RM) knee extension and leg press exercises, 2 days/wk for 12 weeks. The BFR-RT group wore elastic cuffs (120–270 mmHg) on both legs during training. Magnetic resonance imaging-measured muscle cross-sectional area (CSA), 1-RM strength, chair stand (CS) test, and cardio-ankle vascular index testing (CAVI), an index of arterial stiffness, were measured before and 3–5 days after the final training session. Muscle CSA of the quadriceps (8.0%), adductors (6.5%), and gluteus maximus (4.4%), leg extension and leg press 1-RM strength (26.1% and 33.4%), and CS performance (18.3%) improved (P < 0.05) in the BFR-RT group, but not in the CON group. In CAVI testing, there were no changes in both two groups. In conclusion, BFR-RT improves muscle CSA as well as maximal muscle strength, but does not negatively affect arterial stiffness or humeral coagulation factors in older adults. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
