scholarly journals Low-load resistance exercise during inactivity is associated with greater fibre area and satellite cell expression in older skeletal muscle

2018 ◽  
Vol 9 (4) ◽  
pp. 747-754 ◽  
Author(s):  
Daniel R. Moore ◽  
Ryan P. Kelly ◽  
Michaela C. Devries ◽  
Tyler A. Churchward-Venne ◽  
Stuart M. Phillips ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Resistance Exercise ◽  
Satellite Cell ◽  
Load Resistance ◽  
Fibre Area ◽  
Low Load ◽  
Cell Expression

scholarly journals Low-load Resistance Exercise During Inactivity is Associated With Greater Fibre Area and Satellite Cell Expression in Older Skeletal Muscle

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 614-615
Author(s):  
Adam Johnston ◽  
Ryan P. Kelly ◽  
Michaela Devries ◽  
Tyler Churchward-Venne ◽  
Stuart Phillips ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Resistance Exercise ◽  
Satellite Cell ◽  
Load Resistance ◽  
Fibre Area ◽  
Low Load ◽  
Cell Expression

scholarly journals Low-load resistance training to task failure with and without blood flow restriction: muscular functional and structural adaptations

2020 ◽  
Vol 318 (2) ◽  
pp. R284-R295 ◽  
Author(s):  
Christopher Pignanelli ◽  
Heather L. Petrick ◽  
Fatemeh Keyvani ◽  
George J. F. Heigenhauser ◽  
Joe Quadrilatero ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Resistance Training ◽  
Resistance Exercise ◽  
Load Resistance ◽  
Muscle Endurance ◽  
Flow Restriction ◽  
Muscle Adaptations ◽  
Low Load ◽  
Skeletal Muscle Adaptations

The application of blood flow restriction (BFR) during resistance exercise is increasingly recognized for its ability to improve rehabilitation and for its effectiveness in increasing muscle hypertrophy and strength among healthy populations. However, direct comparison of the skeletal muscle adaptations to low-load resistance exercise (LL-RE) and low-load BFR resistance exercise (LL-BFR) performed to task failure is lacking. Using a within-subject design, we examined whole muscle group and skeletal muscle adaptations to 6 wk of LL-RE and LL-BFR training to repetition failure. Muscle strength and size outcomes were similar for both types of training, despite ~33% lower total exercise volume (load × repetition) with LL-BFR than LL-RE (28,544 ± 1,771 vs. 18,949 ± 1,541 kg, P = 0.004). After training, only LL-BFR improved the average power output throughout the midportion of a voluntary muscle endurance task. Specifically, LL-BFR training sustained an 18% greater power output from baseline and resulted in a greater change from baseline than LL-RE (19 ± 3 vs. 3 ± 4 W, P = 0.008). This improvement occurred despite histological analysis revealing similar increases in capillary content of type I muscle fibers following LL-RE and LL-BFR training, which was primarily driven by increased capillary contacts (4.53 ± 0.23 before training vs. 5.33 ± 0.27 and 5.17 ± 0.25 after LL-RE and LL-BFR, respectively, both P < 0.05). Moreover, maximally supported mitochondrial respiratory capacity increased only in the LL-RE leg by 30% from baseline ( P = 0.006). Overall, low-load resistance training increased indexes of muscle oxidative capacity and strength, which were not further augmented with the application of BFR. However, performance on a muscle endurance test was improved following BFR training.

Acute skeletal muscle responses to very low‐load resistance exercise with and without the application of blood flow restriction in the upper body

2018 ◽  
Vol 39 (3) ◽  
pp. 201-208 ◽  
Author(s):  
Samuel L. Buckner ◽  
Matthew B. Jessee ◽  
Scott J. Dankel ◽  
Kevin T. Mattocks ◽  
J. Grant Mouser ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Resistance Exercise ◽  
Load Resistance ◽  
Blood Flow Restriction ◽  
Upper Body ◽  
Flow Restriction ◽  
Low Load ◽  
Muscle Responses

scholarly journals LOW-LOAD RESISTANCE EXERCISE IMPROVES COGNITIVE FUNCTION IN OLDER ADULTS

2018 ◽  
Vol 24 (2) ◽  
pp. 125-129 ◽  
Author(s):  
Amanda Veiga Sardeli ◽  
Marina Lívia Venturini Ferreira ◽  
Lucas do Carmo Santos ◽  
Marília de Souza Rodrigues ◽  
Alfredo Damasceno ◽  
...  
Keyword(s):  
Older Adults ◽  
Response Time ◽  
Resistance Exercise ◽  
Load Resistance ◽  
Level Of Evidence ◽  
Healthy Older Adults ◽  
Results Of Treatment ◽  
Low Load ◽  
Before And After ◽  
Exercise Induced

ABSTRACT Introduction: Resistance exercise (RE) training is widely recommended for increasing muscle strength and mass in older adults. RE is also a potential stimulus to improve cognitive functions (CF), but the best protocol for this purpose is unknown. Objective: To compare the effects of different RE protocols on CF in the same group of individuals. Methods: Twenty-four older adults were randomized (cross over) to control (CON) and lower limb RE protocols with high load (HL - 80% of 1RM), low load (LL - 30% of 1RM) and LL with blood flow restriction (LL-BFR - 30% of 1RM and 50% BFR). For CF assessment, participants underwent the Stroop test before and after each RE protocol. Results: Reduction in response time for Stroop neutral stimuli was greater after LL (effect size (ES) = -0.92) compared to CON (ES = -0.18) and HL (ES = -0.03), but was not different from LL-BFR (ES = -0.24). The reduced response time was associated with reduced parasympathetic modulation and increased cardiac output across protocols. Conclusion: LL was the most effective RE protocol to improve CF of older adults and a potential beneficial effect of LL-BFR on CF (non-significant) was identified. Therefore, LL resistance exercise appears to stimulate acute cognitive improvements in healthy older adults, probably through exercise-induced optimal autonomic modulation changes. Level of Evidence I; Therapeutic studies-Investigating the results of treatment.

Sign in / Sign up

Export Citation Format

Share Document