scholarly journals Application of Cut‐Points for Low Muscle Strength and Lean Mass in Mobility‐Limited Older Adults

2020 ◽  
Vol 68 (7) ◽  
pp. 1445-1453 ◽  
Author(s):  
Gregory J. Grosicki ◽  
Thomas G. Travison ◽  
Hao Zhu ◽  
Jay Magaziner ◽  
Ellen F. Binder ◽  
...  
Keyword(s):  
Older Adults ◽  
Muscle Strength ◽  
Lean Mass ◽  
Cut Points

scholarly journals Type 2 Diabetes Reduces the Muscle Anabolic Effect of Resistance Exercise Training in Older Adults

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 529-529
Author(s):  
Amanda Randolph ◽  
Tatiana Moro ◽  
Adetutu Odejimi ◽  
Blake Rasmussen ◽  
Elena Volpi
Keyword(s):  
Type 2 Diabetes ◽  
Older Adults ◽  
Muscle Strength ◽  
Exercise Training ◽  
Resistance Exercise ◽  
Lean Mass ◽  
Synthesis Rate ◽  
Resistance Exercise Training ◽  
Appendicular Lean Mass

Abstract Type 2 Diabetes Mellitus (T2DM) accelerates the incidence and increases the prevalence of sarcopenia in older adults. This suggests an urgent need for identifying effective sarcopenia treatments for older adults with T2DM. It is unknown whether traditional approaches, such as progressive resistance exercise training (PRET), can effectively counteract sarcopenia in older patients with T2DM. To test the efficacy of PRET for the treatment of sarcopenia in older adults with T2DM, 30 subjects (15 T2DM and 15 age- and sex- matched controls) underwent metabolic testing with muscle biopsies before and after a 13-week full-body PRET program. Primary outcome measures included changes in appendicular lean mass, muscle strength, and mixed muscle fractional synthesis rate (FSR). Before PRET, BMI-adjusted appendicular lean mass was significantly lower in the T2DM group (0.7095±0.0381 versus 0.8151±0.0439, p<0.0001). As a result of PRET, appendicular lean mass adjusted for BMI and muscle strength increased significantly in both groups, but to a lesser extent for the T2DM group (p=0.0009) . Preliminary results for FSR (n=25) indicate that subjects with T2DM had lower basal FSR prior to PRET (p=0.0197) . Basal FSR increased significantly in the control group after PRET (p=0.0196), while it did not change in the T2DM group (p=0.3537). These results suggest that in older adults the positive effect of PRET on muscle anabolism and strength is reduced by T2DM . Thus, older adults with T2DM may require more intensive, multimodal and targeted sarcopenia treatment. Funded by NIH R01AG049611 and P30AG024832.

scholarly journals Does the Amount of Fat Mass Predict Age-Related Loss of Lean Mass, Muscle Strength, and Muscle Quality in Older Adults?

2011 ◽  
Vol 66A (8) ◽  
pp. 888-895 ◽  
Author(s):  
A. Koster ◽  
J. Ding ◽  
S. Stenholm ◽  
P. Caserotti ◽  
D. K. Houston ◽  
...  
Keyword(s):  
Older Adults ◽  
Muscle Strength ◽  
Fat Mass ◽  
Lean Mass ◽  
Muscle Quality ◽  
Age Related

scholarly journals L-Leucine Supplementation for Preserving Lean Mass During Low Calorie Diet in Sarcopenic Obese Women: A Pilot Study

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A19-A19
Author(s):  
Elisabetta Camajani ◽  
Agnese Persichetti ◽  
Savina Contini ◽  
Carla Lubrano ◽  
Massimiliano Caprio ◽  
...  
Keyword(s):  
Older Adults ◽  
Vitamin D ◽  
Muscle Strength ◽  
Whey Protein ◽  
Muscle Mass ◽  
Lean Mass ◽  
Homa Index ◽  
Leucine Supplementation ◽  
Low Calorie Diet ◽  
Calorie Diet

Abstract Background: In sarcopenic obese subjects it is essential to reduce body weight and to preserve lean mass, in order to avoid a worsening of muscle function (1). Several studies have shown that leucine supplementation can be useful to improve skeletal muscle mass in sarcopenic patients (2). Aim: Evaluate the effectiveness of a short-term low calorie diet (LCD) combined with combined supplementation with whey protein, leucine and vitamin D on weight loss, lean mass and muscle strength in sarcopenic, obese, hyperinsulinemic and menopause women. Materials and methods: 16 female with mean age: 58.1 years (range: 47–69 years), BMI 37.6 Kg/m2 (range: 31,7 - 44,1 Kg/m2), HOMA-index ≥ 2.5, were assigned to an LCD regimen (1000 kcal/day) with supplementation of 18 g protein, 4 g leucine and 5 mcg vitamin D for 45 days. Anthropometric indexes, blood and urine chemistry, body composition by DEXA, muscle strength by handgrip test and Short Physical Performance Battery (SPPB) were assessed at baseline and at the end of the treatment. Results: A significant reduction of BMI (35,7 vs 37,6 Kg/m2), waist circumference (102,4 vs 107 cm), HOMA index (2,3 vs 4,8) and fasting insulin (10,4 vs 17,4 μIU/ml) was observed in all patients. Women preserved total lean body mass (57 vs 55 %) and improved significantly muscle strength, as measured by handgrip (22,2 vs 18,6 Kg) and SPPB (8,9 vs 7,5). Conclusion: We conclude that LCD with adequate protein intake and a supplementation with whey protein, leucine and vitamin D should be promoted to maintain muscle mass and improve muscle strength in menopause women with sarcopenic obesity. References: 1. Batsis JA, Villareal DT. Sarcopenic obesity in older adults: aetiology, epidemiology and treatment strategies. Nat Rev Endocrinol. 2018 Sep;14(9):513–5372. Bauer JM, Verlaan S, Bautmans I, Brandt K, Donini LM, Maggio M, McMurdo ME, Mets T, Seal C, Wijers SL, Ceda GP, De Vito G, Donders G, Drey M, Greig C, Holmbäck U, Narici M, McPhee J, Poggiogalle E, Power D, Scafoglieri A, Schultz R, Sieber CC, Cederholm T. Effects of a vitamin D and leucine-enriched whey protein nutritional supplement on measures of sarcopenia in older adults, the PROVIDE study: a randomized, double-blind, placebo-controlled trial. J Am Med Dir Assoc. 2015 Sep 1;16(9)

scholarly journals Relative contribution of muscle strength, lean mass, and lower extremity motor function in explaining between-person variance in mobility in older adults

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Nathan P. Wages ◽  
Janet E. Simon ◽  
Leatha A. Clark ◽  
Shinichi Amano ◽  
David W. Russ ◽  
...  
Keyword(s):  
Older Adults ◽  
Muscle Strength ◽  
Lower Extremity ◽  
Motor Function ◽  
Lean Mass ◽  
Relative Contribution

scholarly journals Effectiveness of Community-Delivered Functional Power Training Program for Frail and Pre-frail Community-Dwelling Older Adults: a Randomized Controlled Study

2021 ◽  
Author(s):  
Nien Xiang Tou ◽  
Shiou-Liang Wee ◽  
Wei Ting Seah ◽  
Daniella Hui Min Ng ◽  
Benedict Wei Jun Pang ◽  
...  
Keyword(s):  
Older Adults ◽  
Muscle Strength ◽  
Controlled Trial ◽  
Community Dwelling ◽  
Controlled Study ◽  
Power Training ◽  
Frail Older Adults ◽  
Frailty Status ◽  
Randomized Controlled ◽  
Community Dwelling Older Adults

AbstractTranslation of community-based functional training for older adults to reduce frailty is still lacking. We evaluated the effectiveness and implementation of a community-delivered group-based functional power training (FPT) program for frail older adults within their neighborhoods. A two-arm, multicenter assessor-blind stratified randomized controlled trial was conducted at four local senior activity centers in Singapore. Sixty-one community-dwelling older adults with low handgrip strength were randomized to intervention (IG) or control (CG) group. The IG underwent the FPT program (power and balance exercises using simple equipment) delivered by a community service provider. The 12-week program comprised 2 × 60 min sessions/week. CG continued usual activities at the centers. Functional performance, muscle strength, and frailty status were assessed at baseline and 3 months. Program implementation was evaluated using RE-AIM framework. The program was halted due to Coronavirus Disease 2019-related suspension of senior center activities. Results are reported from four centers, which completed the program. IG showed significantly greater improvement in the Short Physical Performance Battery test as compared to CG (p = 0.047). No effects were found for timed up and go test performance, muscle strength, and frailty status. The community program exhibited good reach, effectiveness, adoption, and implementation. Our study demonstrated that FPT was associated with greater improvement in physical function in pre-frail/frail participants as compared to exercise activities offered at local senior activity centers. It is a feasible intervention that can be successfully implemented for frail older adults in their neighborhoods. Trial registration ClinicalTrials.gov, NCT04438876. Registered 19 June 2020–retrospectively registered.

scholarly journals COVID-19 era in long-term cardiac rehabilitation programs: how was muscle strenght and lean mass affected in cardiovascular patients?

2021 ◽  
Vol 28 (Supplement_1) ◽  
Author(s):  
M Borges ◽  
M Lemos Pires ◽  
R Pinto ◽  
G De Sa ◽  
I Ricardo ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Cardiac Rehabilitation ◽  
Lean Mass ◽  
Lower Limb ◽  
Lower Limbs ◽  
Phase Iii ◽  
Face To Face ◽  
Home Based ◽  
Lower Limb Strength

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Exercise prescription is one of the main components of phase III Cardiac Rehabilitation (CR) programs due to its documented prognostic benefits. It has been well established that, when added to aerobic training, resistance training (RT) leads to greater improvements in peripheral muscle strength and muscle mass in patients with cardiovascular disease (CVD). With COVID-19, most centre-based CR programs had to be suspended and CR patients had to readjust their RT program to a home-based model where weight training was more difficult to perform. How COVID-19 Era impacted lean mass and muscle strength in trained CVD patients who were attending long-term CR programs has yet to be discussed. Purpose To assess upper and lower limb muscle strength and lean mass in CVD patients who had their centre-based CR program suspended due to COVID-19 and compare it with previous assessments. Methods 87 CVD patients (mean age 62.9 ± 9.1, 82.8% male), before COVID-19, were attending a phase III centre-based CR program 3x/week and were evaluated annually. After 7 months of suspension, 57.5% (n = 50) patients returned to the face-to-face CR program. Despite all constraints caused by COVID-19, body composition and muscle strength of 35 participants (mean age 64.7 ± 7.9, 88.6% male) were assessed. We compared this assessment with previous years and established three assessment time points: M1) one year before COVID-19 (2018); M2) last assessment before COVID-19 (2019); M3) the assessment 7 months after CR program suspension (last trimester of 2020). Upper limbs strength was measured using a JAMAR dynamometer, 30 second chair stand test (number of repetitions – reps) was used to measure lower limbs strength and dual energy x-ray absorptiometry was used to measure upper and lower limbs lean mass. Repeated measures ANOVA were used. Results Intention to treat analysis showed that upper and lower limbs lean mass did not change from M1 to M2 but decreased significantly from M2 to M3 (arms lean mass in M2: 5.68 ± 1.00kg vs M3: 5.52 ± 1.06kg, p = 0.004; legs lean mass in M2: 17.40 ± 2.46kg vs M3: 16.77 ± 2.61kg, p = 0.040). Lower limb strength also decreased significantly from M2 to M3 (M2: 23.31 ± 5.76 reps vs M3: 21.11 ± 5.31 reps, p = 0.014) after remaining stable in the year prior to COVID-19. Upper limb strength improved significantly from M1 to M2 (M1: 39.00 ± 8.64kg vs M2: 40.53 ± 8.77kg, p = 0.034) but did not change significantly from M2 to M3 (M2 vs M3: 41.29 ± 9.13kg, p = 0.517). Conclusion After CR centre-based suspension due to COVID-19, we observed a decrease in upper and lower limbs lean mass and lower limb strength in previously trained CVD patients. These results should emphasize the need to promote all efforts to maintain physical activity and RT through alternative effective home-based CR programs when face-to-face models are not available or possible to be implemented.

scholarly journals Long-term participation in community group exercise improves lower extremity muscle strength and delays age-related declines in walking speed and physical function in older adults

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Chisato Hayashi ◽  
Soshiro Ogata ◽  
Tadashi Okano ◽  
Hiromitsu Toyoda ◽  
Sonoe Mashino
Keyword(s):  
Older Adults ◽  
Muscle Strength ◽  
Physical Exercise ◽  
Lower Extremity ◽  
Physical Function ◽  
Community Dwelling ◽  
Group Exercise ◽  
Community Based ◽  
Lower Extremity Muscle

Abstract Background The effects of group exercise on the physical function of community-dwelling older adults remain unclear. The changes in lower extremity muscle strength, timed up and go (TUG) time, and the motor fitness scale (MFS), over time, among older adults who expressed a willingness to participate in community-based physical exercise groups, were determined using multilevel modelling. Methods We analyzed data of 2407 older adults between April 2010 and December 2019 from the registry of physical tests of community-based physical exercise groups. We conducted a retrospective cohort study to assess the effect of physical exercise on lower extremity muscle strength, TUG time, and MFS scores. The durations of the exercises were evaluated by frequency of physical test’s participate. Results A deterioration in lower extremity muscle strength was found in the short-term participant group only. However, in the mid-term and long-term participation groups, lower extremity muscle strength showed a trend of improvement. The TUG time and the MFS score were negatively correlated with increasing age in both groups divided by the duration of participation. However, there was a slower rate of deterioration in the long-term participation group. Discussion Lower extremity muscle strength, TUG time, and MFS scores decline with increasing age and there were differences in the slope of deterioration that depended on the duration of participation in community-based group exercise. Conclusion Participation in group exercise improved lower extremity muscle strength, TUG time, and MFS scores of older adults living in a community. The positive effects of group exercise were dependent on long-term participation.

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