scholarly journals Effect of Combined Increased Physical Activity and Walking with Blood Flow Restriction on Leg Muscle Thickness in Older Adults

2016 ◽  
Vol 62 (Suppl.1) ◽  
pp. 206-210 ◽  
Author(s):  
HAYAO OZAKI ◽  
TAKASHI NAKAGATA ◽  
TOSHIHARU NATSUME ◽  
SHUICHI MACHIDA ◽  
HISASHI NAITO
2016 ◽  
Vol 62 (Suppl.1) ◽  
pp. 237-242 ◽  
Author(s):  
TOSHIHARU NATSUME ◽  
HAYAO OZAKI ◽  
TAKASHI NAKAGATA ◽  
SHUICHI MACHIDA ◽  
HISASHI NAITO

2019 ◽  
Vol Volume 14 ◽  
pp. 1461-1469 ◽  
Author(s):  
Karynne Grutter Lopes ◽  
Daniel Alexandre Bottino ◽  
Paulo Farinatti ◽  
Maria das Graças Coelho de Souza ◽  
Priscila Alves Maranhão ◽  
...  

2016 ◽  
Vol 37 (6) ◽  
pp. 734-740 ◽  
Author(s):  
Jeremy P. Loenneke ◽  
Daeyeol Kim ◽  
Christopher A. Fahs ◽  
Robert S. Thiebaud ◽  
Takashi Abe ◽  
...  

2014 ◽  
Vol 70 (8) ◽  
pp. 950-958 ◽  
Author(s):  
Tomohiro Yasuda ◽  
Kazuya Fukumura ◽  
Yusuke Uchida ◽  
Hitomi Koshi ◽  
Haruko Iida ◽  
...  

Author(s):  
Darío Rodrigo-Mallorca ◽  
Andrés Felipe Loaiza-Betancur ◽  
Pablo Monteagudo ◽  
Cristina Blasco-Lafarga ◽  
Iván Chulvi-Medrano

Low-intensity training with blood flow restriction (LI-BFR) has been suggested as an alternative to high-intensity resistance training for the improvement of strength and muscle mass, becoming advisable for individuals who cannot assume such a load. The systematic review aimed to determine the effectiveness of the LI-BFR compared to dynamic high-intensity resistance training on strength and muscle mass in non-active older adults. A systematic review was conducted according to the Cochrane Handbook and reportedly followed the PRISMA statement. MEDLINE, EMBASE, Web of Science Core Collection, and Scopus databases were searched between September and October 2020. Two reviewers independently selected the studies, extracted data, assessed the risk of bias and the quality of evidence using the GRADE approach. Twelve studies were included in the qualitative synthesis. Meta-analysis pointed out significant differences in maximal voluntary contraction (MVC): SMD 0.61, 95% CI [0.10, 1.11], p = 0.02, I2 71% p < 0.0001; but not in the repetition maximum (RM): SMD 0.07, 95% CI [−0.25, 0.40], p = 0.66, I2 0% p < 0.53; neither in the muscle mass: SMD 0.62, 95% CI [−0.09, 1.34], p = 0.09, I2 59% p = 0.05. Despite important limitations such as scarce literature regarding LI-BFR in older adults, the small sample size in most studies, the still differences in methodology and poor quality in many of them, this systematic review and meta-analysis revealed a positive benefit in non-active older adults. LI- BFR may induce increased muscular strength and muscle mass, at least at a similar extent to that in the traditional high-intensity resistance training.


2017 ◽  
Vol 104 (1) ◽  
pp. 64-76 ◽  
Author(s):  
SJ Dankel ◽  
SL Buckner ◽  
BR Counts ◽  
MB Jessee ◽  
JG Mouser ◽  
...  

The purpose of this study was to determine acute physiological and perceptual responses to two commonly implemented blood flow restriction protocols. Using a within-subject design, 15 participants (age ∼25) performed four sets of unilateral elbow flexion with each arm. One arm exercised using a 3-cm elastic cuff inflated to 160 mmHg, whereas the other arm exercised using a 5-cm nylon cuff inflated to 40% of the individual’s arterial occlusion pressure. While both protocols elicited increases in acute muscle thickness [pre: 4.5 (0.2) cm, post: 5.0 (0.2) cm; p < 0.001] and electromyography amplitude [first 3 reps: 55 (5) %MVC; last 3 reps: 87 (10) %MVC], there were no differences between conditions. Both protocols produced decreases in post-exercise strength (pre: 70 Nm, post: 51 Nm; p < 0.001) with no difference between conditions. The nylon protocol resulted in more repetitions during sets 2 [13 (2) vs. 9 (4); p = 0.001] and 3 [10 (2) vs. 7 (4); p = 0.05], while producing lower levels of discomfort following each set (average 3 vs. 4; p < 0.05). In conclusion, both protocols produced similar acute responses thought to be important for promoting muscle growth. However, the use of arbitrary pressures may place some individuals under complete arterial occlusion which may increase the potential risk of an adverse event.


2018 ◽  
Vol 7 (10) ◽  
pp. 337 ◽  
Author(s):  
Alexander Törpel ◽  
Fabian Herold ◽  
Dennis Hamacher ◽  
Notger Müller ◽  
Lutz Schega

Aging is accompanied by a decrease in physical capabilities (e.g., strength loss) and cognitive decline. The observed bidirectional relationship between physical activity and brain health suggests that physical activities could be beneficial to maintain and improve brain functioning (e.g., cognitive performance). However, the exercise type (e.g., resistance training, endurance training) and their exercise variables (e.g., load, duration, frequency) for an effective physical activity that optimally enhance cognitive performance are still unknown. There is growing evidence that resistance training induces substantial brain changes which contribute to improved cognitive functions. A relative new method in the field of resistance training is blood flow restriction training (BFR). While resistance training with BFR is widely studied in the context of muscular performance, this training strategy also induces an activation of signaling pathways associated with neuroplasticity and cognitive functions. Based on this, it seems reasonable to hypothesize that resistance training with BFR is a promising new strategy to boost the effectiveness of resistance training interventions regarding cognitive performance. To support our hypothesis, we provide rationales of possible adaptation processes induced by resistance training with BFR. Furthermore, we outline recommendations for future studies planning to investigate the effects of resistance training with BFR on cognition.


2019 ◽  
Vol 106 (2) ◽  
pp. 180-193 ◽  
Author(s):  
MB Jessee ◽  
SL Buckner ◽  
KT Mattocks ◽  
SJ Dankel ◽  
JG Mouser ◽  
...  

The purpose of this study was to compare the acute muscular response with resistance exercise between the following conditions [labeled (% one-repetition maximum/% arterial occlusion pressure)]: high-load (70/0), very low-load (15/0), very low-load with moderate (15/40), and high (15/80) blood flow restriction pressures. Twenty-three participants completed four sets of unilateral knee extension to failure (up to 90 repetitions) with each condition, one condition per leg, each day. Muscle thickness and maximal voluntary contraction (MVC) were measured before (Pre), immediately after (Post-0), and 15 min after (Post-15) exercise and electromyography (EMG) amplitude during exercise. Pre to Post-0 muscle thickness changes in cm [95% CI] were greater with 15/40 [0.57 (0.41, 0.73)] and 15/80 [0.49 (0.35, 0.62)] compared to 70/0 [0.33 (0.25, 0.40)]. Pre to Post-0 MVC changes in Nm [95% CI] were higher with 15/40 [−127.0 (−162.1, −91.9)] and 15/80 [−133.6 (−162.8, −104.4)] compared to 70/0 [−48.4 (−70.1, −26.6)] and 15/0 [−98.4 (−121.9, −74.9)], which were also different. Over the first three repetitions, EMG increased across sets, whereas in the last three repetitions it did not. EMG was also different between conditions and was generally greater during 70/0. Repetitions decreased across sets reaching the lowest for 70/0, and for very low loads decreased with increased pressure. In trained participants exercising to failure, lower load and the application of restriction pressure augment changes in muscle thickness and torque. The EMG amplitude was augmented by load. Training studies should compare these conditions, as the results herein suggest some muscular adaptations may differ.


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