title: Effects of Low-Load, Elastic Band Resistance Training Combined With Blood Flow Restriction on Muscle Size and Arterial Stiffness in Older Adults.
abstract: We examined the effect of low-load, elastic band resistance training with blood flow restriction (BFR) on muscle size and arterial stiffness in older adults. Healthy older adults (aged 61-85 years) were divided into BFR training (BFR-T, n = 9) or non-BFR training (CON-T, n = 8) groups. Both groups performed low-load arm curl and triceps down exercises (four sets, total 75 repetitions for each) using an elastic band, 2 d/wk for 12 weeks. The BFR-T group wore inflated pneumatic elastic cuffs (120-270 mm Hg) on both arms during training. Magnetic resonance imaging-measured muscle cross-sectional area of the upper arm, maximum voluntary isometric contraction of the elbow flexors and extensors, cardio-ankle vascular index testing, and ankle-brachial pressure index were measured before and 3-5 days after the final training session. Muscle cross-sectional area of the elbow flexors (17.6%) and extensors (17.4%) increased, as did elbow flexion and elbow extension maximum voluntary isometric contraction (7.8% and 16.1%, respectively) improved (p < .05) in the BFR-T group, but not in the CON-T group. In cardio-ankle vascular index and ankle-brachial pressure index testing, there were no changes between pre- and post-results in either group. In conclusion, elastic band BFR-T improves muscle cross-sectional area as well as maximal muscle strength but does not negatively affect arterial stiffness in older adults.
authors.affiliation: Department of Ischemic Circulatory Physiology, Graduate School of Medicine, yasuda-tomohiro@umin.ac.jp.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Yasuda
authors.affiliation: Department of Ischemic Circulatory Physiology, Graduate School of Medicine.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Fukumura
authors.affiliation: Department of Ischemic Circulatory Physiology, Graduate School of Medicine.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Uchida
authors.affiliation: Department of Ischemic Circulatory Physiology, Graduate School of Medicine.
authors.forename: Hitomi
authors.initials: H
authors.lastname: Koshi
authors.affiliation: Department of Ischemic Circulatory Physiology, Graduate School of Medicine.
authors.forename: Haruko
authors.initials: H
authors.lastname: Iida
authors.affiliation: Department of Mechano-Informatics, Grad School of Information Science and Technology, and.
authors.forename: Ken
authors.initials: K
authors.lastname: Masamune
authors.affiliation: 3Department of Otolaryngology and Head and Neck Surgery, Graduate School of Medicine, University of Tokyo, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Yamasoba
authors.affiliation: Department of Basic Sciences in Medicine, Kaatsu International University, Battaramulla, Sri Lanka.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Sato
authors.affiliation: Department of Ischemic Circulatory Physiology, Graduate School of Medicine.
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Nakajima
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000473:pathology*; D012039:Regional Blood Flow; D055070:Resistance Training; D059289:Vascular Stiffness
keywords: Electromyography; Muscle hypertrophy; Sarcopenia; Strength; Vascular occlusion