Resistance Training Alone or Combined With N-3 PUFA-Rich Diet in Older Women: Effects on Muscle Fiber Hypertrophy

2018 ◽  
Vol 74 (4) ◽  
pp. 489-494 ◽  
Author(s):  
Emelie Strandberg ◽  
Elodie Ponsot ◽  
Karin Piehl-Aulin ◽  
Gunnar Falk ◽  
Fawzi Kadi
Keyword(s):  
Resistance Training ◽  
Older Women ◽  
Muscle Fiber

Resistance training improves single muscle fiber contractile function in older women

2001 ◽  
Vol 281 (2) ◽  
pp. C398-C406 ◽  
Author(s):  
Scott Trappe ◽  
Michael Godard ◽  
Philip Gallagher ◽  
Chad Carroll ◽  
Greg Rowden ◽  
...  
Keyword(s):  
Resistance Training ◽  
Single Cell ◽  
Older Women ◽  
Muscle Fiber ◽  
Peak Power ◽  
Older Men ◽  
Single Muscle ◽  
Mhc I ◽  
Before And After ◽  
Mhc Iia

The purpose of this study was to 1) examine single cell contractile mechanics of skeletal muscle before and after 12 wk of progressive resistance training (PRT) in older women ( n = 7; 74 ± 2 yr) and 2) to compare these results to our previously completed single cell PRT work with older men ( n = 7; 74 ± 2 yr) (Trappe S, Williamson D, Godard M, Porter D, Rowden G, and Costill D. J Applied Physiol 89:143–152, 2000). Knee extensor PRT was performed 3 days/wk at 80% of one-repetition maximum. Muscle biopsies were obtained from the vastus lateralis before and after the PRT. Chemically skinned single muscle fibers ( n = 313) were studied at 15°C for peak tension (Po), unloaded shortening velocity ( V o), and power. Due to the low number of hybrid fibers identified post-PRT, direct comparisons were limited to MHC I and IIa fibers. Muscle fiber diameter increased 24% (90 ± 2 to 112 ± 6 μm; P < 0.05) in MHC I fibers with no change in MHC IIa fibers. Po increased ( P< 0.05) 33% in MHC I (0.76 ± 0.04 to 1.01 ± 0.09 mN) and 14% in MHC IIa (0.73 ± 0.04 to 0.83 ± 0.05 mN) fibers. Muscle fiber V o was unaltered in both fiber types with PRT. MHC I and IIa fiber power increased ( P< 0.05) 50% [11 ± 2 to 17 ± 2 μN · fiber length (FL) · s−1] and 25% (40 ± 8 to 51 ± 6 μN · FL · s−1), respectively. However, when peak power was normalized to cell size, no pre- to postimprovements were observed. These data indicate that PRT in elderly women increases muscle cell size, strength, and peak power in both slow and fast muscle fibers, which was similar to the older men. However, in contrast to the older men, no change in fiber V o or normalized power was observed in the older women. These data suggest that older men and women respond differently at the muscle cell level to the same resistance-training stimulus.

Water-based resistance training program with isolated concentric action improves physical functional capacity and muscular strength in older women

2021 ◽  
Author(s):  
Ana Victoria Costa Freitas ◽  
Inês Amanda Streit ◽  
Josefina Bertoli ◽  
Kayth Andrade Nascimento ◽  
Maria Carolina Oliveira de Sá ◽  
...  
Keyword(s):  
Resistance Training ◽  
Training Program ◽  
Older Women ◽  
Functional Capacity ◽  
Muscular Strength ◽  
Resistance Training Program ◽  
Water Based

scholarly journals Changes in phase angle and body composition induced by resistance training in older women

2016 ◽  
Vol 70 (12) ◽  
pp. 1408-1413 ◽  
Author(s):  
L dos Santos ◽  
E S Cyrino ◽  
M Antunes ◽  
D A Santos ◽  
L B Sardinha
Keyword(s):  
Body Composition ◽  
Resistance Training ◽  
Older Women ◽  
Phase Angle

Resistance Training Improves a Cellular Health Parameter in Obese Older Women: A Randomized Controlled Trial

2020 ◽  
Vol 34 (10) ◽  
pp. 2996-3002 ◽  
Author(s):  
Alex S. Ribeiro ◽  
Brad J. Schoenfeld ◽  
Leandro Dos Santos ◽  
João Pedro Nunes ◽  
Crisieli M. Tomeleri ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Resistance Training ◽  
Older Women ◽  
Controlled Trial ◽  
Randomized Controlled

scholarly journals Evaluation of Rat Muscle Structure in Pre-Menopausal Period after Regular Resistance Exercise and Taking Vitamin D and Calcium Supplements

2020 ◽  
Author(s):  
Seyedeh Zahra Hosseini Sisi ◽  
Mohammad Ali Azarbayjani ◽  
Mohammad Reza Vafaeenasab ◽  
Maghsoud Peeri ◽  
Mohammad Reza Dehghani
Keyword(s):  
Vitamin D ◽  
Resistance Training ◽  
Resistance Exercise ◽  
Muscle Fiber ◽  
Wistar Rats ◽  
Fiber Diameter ◽  
Inflammatory Cells ◽  
Control Group ◽  
Standard Diet ◽  
Calcium Supplements

Introduction: Menopause can change the musculoskeletal system by reducing estrogen hormone levels. The aim of this study was to evaluate the effect of regular resistance training accompanied by vitamins D and calcium supplements during pre-menopausal period on muscle tissues of Wistar rats’ postmenopausal period. Methods: In this experimental study, female Wistar rats were randomly divided into control, placebo, vitamins D, Calcium, excercise, vitamins D- Calcium, vitamins.D- excercise, Calcium - excercise, and vitamins.D‐ Calcium - excercise groups. Control and placebo groups were fed with a standard diet and sesame oil, respectively. The amount of calcium consumed was 35 mg / kg and the amount of vitamin D was 10000 IU during the two-month period, and in the resistance training groups, two months of training was performed with a ladder. Then ovariectomy was done and sample of the gastrocnemius muscle was taken and the diameter of muscle fiber, the number of muscle and adipocyte cell as well as the number of inflammatory cells were studied. The statistical analysis by means of one-way ANOVA and SPSS version 20 was performed. Results: Compared to the control group, the increase in the number of adipocyte cells were observed in the vitamin D, calcium-vitamin D, vitamin D-resistance exercise and placebo groups but it was not significantly different. Muscle fiber diameter significantly increased in all groups compared to the control group (P <0.001). The number of muscle cells increased significantly in the calcium-resistance exercise group (103± 9), vitamin D-resistance exercise (105 ±6.9) and calcium-vitamin D-resistance exercise (114 ± 3.16) compared to the control group, while, there was a significant increase in inflammatory cells only in the control and placebo groups (p≤0.05). Conclusion: Regular resistance exercise accompanied with vitamin D and Calcium supplements in premenopausal period can improve muscle fiber diameter and muscle cell numbers; in addition, the process of decrease in the muscle strength and muscle inflammation during menopause will be delayed.

scholarly journals Long-Term Effects of Resistance Exercise Training on Cognition and Brain Volume in Older Women: Results from a Randomized Controlled Trial

2015 ◽  
Vol 21 (10) ◽  
pp. 745-756 ◽  
Author(s):  
John R. Best ◽  
Bryan K. Chiu ◽  
Chun Liang Hsu ◽  
Lindsay S. Nagamatsu ◽  
Teresa Liu-Ambrose
Keyword(s):  
Randomized Controlled Trial ◽  
White Matter ◽  
Resistance Training ◽  
Exercise Training ◽  
Older Women ◽  
Controlled Trial ◽  
Resistance Exercise Training ◽  
Randomized Controlled

AbstractAerobic exercise training has been shown to attenuate cognitive decline and reduce brain atrophy with advancing age. The extent to which resistance exercise training improves cognition and prevents brain atrophy is less known, and few studies include long-term follow-up cognitive and neuroimaging assessments. We report data from a randomized controlled trial of 155 older women, who engaged in 52 weeks of resistance training (either once- or twice-weekly) or balance-and-toning (twice-weekly). Executive functioning and memory were assessed at baseline, 1-year follow-up (i.e., immediately post-intervention), and 2-year follow-up. A subset underwent structural magnetic resonance imaging scans at those time points. At 2-year follow-up, both frequencies of resistance training promoted executive function compared to balance-and-toning (standardized difference [d]=.31–.48). Additionally, twice-weekly resistance training promoted memory (d=.45), reduced cortical white matter atrophy (d=.45), and increased peak muscle power (d=.27) at 2-year follow-up relative to balance-and-toning. These effects were independent of one another. These findings suggest resistance training may have a long-term impact on cognition and white matter volume in older women. (JINS, 2015,21, 745–756)

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