scholarly journals Impact of Weight Loss on Physical Function with Changes in Strength, Muscle Mass, and Muscle Fat Infiltration in Overweight to Moderately Obese Older Adults: A Randomized Clinical Trial

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Adam J. Santanasto ◽  
Nancy W. Glynn ◽  
Mark A. Newman ◽  
Christopher A. Taylor ◽  
Maria Mori Brooks ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Weight Loss ◽  
Physical Function ◽  
Muscle Mass ◽  
Successful Aging ◽  
Knee Extensor ◽  
Muscle Area ◽  
Fat Infiltration ◽  
Muscle Fat Infiltration

Purpose. Evaluate the effects of weight loss on muscle mass and area, muscle fat infiltration, strength, and their association with physical function.Methods. Thirty-six overweight to moderately obese, sedentary older adults were randomized into either a physical activity plus weight loss (PA+WL) or physical activity plus successful aging health education (PA+SA) program. Measurements included body composition by dual-energy X-ray absorptiometry, computerized tomography, knee extensor strength, and short physical performance battery (SPPB).Results. At 6 months, PA+WL lost greater thigh fat and muscle area compared to PA+SA. PA+WL lost 12.4% strength; PA+SA lost 1.0%. Muscle fat infiltration decreased significantly in PA+WL and PA+SA. Thigh fat area decreased 6-fold in comparison to lean area in PA+WL. Change in total SPPB score was strongly inversely correlated with change in fat but not with change in lean or strength.Conclusion. Weight loss resulted in additional improvements in function over exercise alone, primarily due to loss of body fat.

scholarly journals Effects of physical activity on strength and skeletal muscle fat infiltration in older adults: a randomized controlled trial

2008 ◽  
Vol 105 (5) ◽  
pp. 1498-1503 ◽  
Author(s):  
Bret H. Goodpaster ◽  
Peter Chomentowski ◽  
Bryan K. Ward ◽  
Andrea Rossi ◽  
Nancy W. Glynn ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Skeletal Muscle ◽  
Muscle Mass ◽  
Successful Aging ◽  
Controlled Trial ◽  
Cross Sectional ◽  
Fat Infiltration ◽  
Muscle Fat Infiltration ◽  
Loss Of Strength

Considerable evidence suggests that the loss of strength and muscle mass appear to be inevitable consequences of aging. Moreover, aging is associated with an increase in body fat. This study examined whether increased physical activity could prevent or reverse the losses of strength and skeletal muscle mass as well as the gain in fat in older adults. Eleven men and 31 women completed a randomized trial consisting of either a physical activity (PA; n = 22) or successful aging health educational control (SA; n = 20) group. Isokinetic knee extensor strength and computed tomography-derived midthigh skeletal muscle and adipose tissue cross-sectional areas (CSA) were assessed at baseline and at 12 mo following randomization. Total body weight and muscle CSA decreased in both groups, but these losses were not different between groups. Strength adjusted for muscle mass decreased (−20.1 ± 9.3%, P < 0.05) in SA. The loss of strength was completely prevented in PA (+2.5 ± 8.3%). In addition, there was a significant increase (18.4 ± 6.0%) in muscle fat infiltration in SA, but this gain was nearly completely prevented in PA (2.3 ± 5.7%). In conclusion, regular physical activity prevents both the age-associated loss of muscle strength and increase in muscle fat infiltration in older adults with moderate functional limitations.

scholarly journals Impact of Meeting Different Guidelines for Protein Intake on Muscle Mass and Physical Function in Physically Active Older Women

Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1156 ◽  
Author(s):  
Andreas Nilsson ◽  
Diego Montiel Rojas ◽  
Fawzi Kadi
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Physical Function ◽  
Older Women ◽  
Muscle Mass ◽  
Dietary Protein ◽  
Protein Intake ◽  
Dietary Protein Intake ◽  
Physical Limitations

The role of dietary protein intake on muscle mass and physical function in older adults is important for the prevention of age-related physical limitations. The aim of the present study was to elucidate links between dietary protein intake and muscle mass and physical function in older women meeting current guidelines of objectively assessed physical activity. In 106 women (65 to 70 years old), protein intake was assessed using a 6-day food record and participants were classified into high and low protein intake groups using two Recommended Dietary Allowance (RDA) thresholds (0.8 g·kg−1 bodyweight (BW) and 1.1 g·kg−1 BW). Body composition, aerobic fitness, and quadriceps strength were determined using standardized procedures, and self-reported physical function was assessed using the SF-12 Health Survey. Physical activity was assessed by accelerometry and self-report. Women below the 0.8 g·kg−1 BW threshold had a lower muscle mass (p < 0.05) with no differences in physical function variables. When based on the higher RDA threshold (1.1 g·kg−1 BW), in addition to significant differences in muscle mass, women below the higher threshold had a significantly (p < 0.05) higher likelihood of having physical limitations. In conclusion, the present study supports the RDA threshold of 0.8 g·kg−1 BW of proteins to prevent the loss of muscle mass and emphasizes the importance of the higher RDA threshold of at least 1.1 g·kg−1 BW to infer additional benefits on constructs of physical function. Our study also supports the role of protein intake for healthy ageing, even in older adults meeting guidelines for physical activity.

scholarly journals TRANSITION TO A MORE EVEN DISTRIBUTION OF PROTEIN INTAKE IS ASSOCIATED WITH ENHANCED FAT LOSS IN OBESE OLDER ADULTS

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S841-S841
Author(s):  
Samaneh Farsijani ◽  
Jane A Cauley ◽  
Adam J Santanasto ◽  
Nancy W Glynn ◽  
Robert M Boudreau ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Weight Loss ◽  
Body Composition ◽  
Successful Aging ◽  
Protein Intake ◽  
Subcutaneous Fat ◽  
Community Dwelling ◽  
Protein Distribution ◽  
Fat Loss

Abstract Background: Optimization of intentional weight loss in obese older adults, through preferential fat mass reduction, is challenging, as the concomitant lean mass loss may exacerbate sarcopenia. Here, we assessed whether changes in within-day protein intake distribution are related to improvements in body composition in overweight/obese older adults during a hypocaloric and exercise intervention. Methods: Thirty-six community-dwelling, overweight-to-obese (BMI 28.0-39.9 kg/m2), sedentary older adults (aged 70.6±6.1 years) were randomized into either physical activity plus successful aging health education (PA+SA; n=15) or physical activity plus weight loss (PA+WL; n=21) programs. Body composition (by CT and DXA) and dietary intake (by three-day food records) were determined at baseline, 6-month, and 12-month follow-up visits. Within-day protein distribution was calculated as the coefficient of variation of protein ingested at breakfast [5:00–10:59], lunch [11:00–16:59] and dinner [17:00–1:00]. Secondary analysis was performed to determine associations between changes in protein intake distribution and body composition. Results: In both groups, baseline protein intake was skewed towards dinner. The pattern of protein intake changed towards a more even within-day distribution in PA+WL, but it remained unchanged in PA+SA. Transition towards a more even pattern of protein intake was independently associated with a greater decline in BMI (P&lt;0.05) and abdominal subcutaneous fat (P&lt;0.05) in PA+WL. However, changes in protein CV were not associated with weight loss in PA+SA. Conclusion: Our results show that mealtime distribution of protein intake throughout the day was associated with improved weight and fat loss under hypocaloric diet combined with physical activity.

scholarly journals Effects of a Multicomponent Exercise Program in Physical Function and Muscle Mass in Sarcopenic/Pre-Sarcopenic Adults

2020 ◽  
Vol 9 (5) ◽  
pp. 1386
Author(s):  
Hyuma Makizako ◽  
Yuki Nakai ◽  
Kazutoshi Tomioka ◽  
Yoshiaki Taniguchi ◽  
Nana Sato ◽  
...  
Keyword(s):  
Older Adults ◽  
Physical Function ◽  
Muscle Mass ◽  
Controlled Trial ◽  
Intervention Group ◽  
Exercise Program ◽  
Exercise Group ◽  
Community Dwelling ◽  
Secondary Outcome ◽  
Muscle Area

This study aimed to assess the effects of a multicomponent exercise program on physical function and muscle mass in older adults with sarcopenia or pre-sarcopenia. Moreover, we aim to standardize the exercise program for easy incorporation in the daily life of community-dwelling older adults as a secondary outcome. A single-blind randomized controlled trial was conducted with individuals (≥60 years) who had sarcopenia or pre-sarcopenia (n = 72). Participants were randomly assigned to the exercise and control groups. The exercise program consisted of 12 weekly 60-min sessions that included resistance, balance, flexibility, and aerobic training. Outcome measures were physical function and muscle mass. Assessments were conducted before and immediately after the intervention. Among the 72 participants (mean age: 75.0 ± 6.9 years; 70.8% women), 67 (93.1%) completed the trial. Group-by-time interactions on the chair stand (p = 0.02) and timed “up and go” (p = 0.01) tests increased significantly in the exercise group. Although the exercise group showed a tendency to prevent loss of muscle mass, no significant interaction effects were observed for cross-sectional muscle area and muscle volume. The 12-week exercise program improved physical function in the intervention group. Although it is unclear whether the program is effective in increasing muscle mass, a multicomponent exercise program would be an effective treatment for physical function among older adults with sarcopenia.

scholarly journals Physical Activity Predicts Higher Physical Function in Older Adults: The Osteoarthritis Initiative

2016 ◽  
Vol 13 (1) ◽  
pp. 6-16 ◽  
Author(s):  
John A. Batsis ◽  
Cassandra M. Germain ◽  
Elizabeth Vásquez ◽  
Alicia J. Zbehlik ◽  
Stephen J. Bartels
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
At Risk ◽  
Physical Function ◽  
Gait Speed ◽  
Short Form ◽  
Knee Extensor ◽  
The Elderly ◽  
Age Group ◽  
Osteoarthritis Initiative

Objectives:Physical activity reduces mobility impairments in elders. We examined the association of physical activity on risk of subjective and objective physical function in adults with and at risk for osteoarthritis (OA).Methods:Adults aged ≥ 60 years from the longitudinal Osteoarthritis Initiative, a prospective observational study of knee OA, were classified by sex-specific quartiles of Physical Activity Score for the Elderly scores. Using linear mixed models, we assessed 6-year data on self-reported health, gait speed, Late-Life Function and Disability Index (LLFDI) and chair stand.Results:Of 2252 subjects, mean age ranged from 66 to 70 years. Within each quartile, physical component (PCS) of the Short Form-12 and gait speed decreased from baseline to follow-up in both sexes (all P < .001), yet the overall changes across PASE quartiles between these 2 time points were no different (P = .40 and .69, males and females, respectively). Decline in PCS occurred in the younger age group, but rates of change between quartiles over time were no different in any outcomes in either sex. LLFDI scores declined in the 70+ age group. Adjusting for knee extensor strength reduced the strength of association.Conclusions:Higher physical activity is associated with maintained physical function and is mediated by muscle strength, highlighting the importance of encouraging physical activity in older adults with and at risk for OA.

scholarly journals Effect of an 18-month physical activity and weight loss intervention on body composition in overweight and obese older adults

Obesity ◽  
2013 ◽  
Vol 22 (2) ◽  
pp. 325-331 ◽  
Author(s):  
Kristen M. Beavers ◽  
Daniel P. Beavers ◽  
Beverly A. Nesbit ◽  
Walter T. Ambrosius ◽  
Anthony P. Marsh ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Weight Loss ◽  
Body Composition ◽  
Weight Loss Intervention

scholarly journals Feasibility and acceptability of a technology-based, rural weight management intervention in older adults with obesity

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
John A. Batsis ◽  
Curtis L. Petersen ◽  
Matthew M. Clark ◽  
Summer B. Cook ◽  
David Kotz ◽  
...  
Keyword(s):  
Older Adults ◽  
Weight Loss ◽  
Physical Function ◽  
Weight Management ◽  
Remote Monitoring ◽  
Rural Areas ◽  
Physical Therapist ◽  
Anthropometric Measures ◽  
Clinical Trial Registration ◽  
Data Feedback

Abstract Background Older adults with obesity residing in rural areas have reduced access to weight management programs. We determined the feasibility, acceptability and preliminary outcomes of an integrated technology-based health promotion intervention in rural-living, older adults using remote monitoring and synchronous video-based technology. Methods A 6-month, non-randomized, non-blinded, single-arm study was conducted from October 2018 to May 2020 at a community-based aging center of adults aged ≥65 years with a body mass index (BMI) ≥30 kg/m2. Weekly dietitian visits focusing on behavior therapy and caloric restriction and twice-weekly physical therapist-led group strength, flexibility and balance training classes were delivered using video-conferencing to participants in their homes. Participants used a Fitbit Alta HR for remote monitoring with data feedback provided by the interventionists. An aerobic activity prescription was provided and monitored. Results Mean age was 72.9±3.9 years (82% female). Baseline anthropometric measures of weight, BMI, and waist circumference were 97.8±16.3 kg, 36.5±5.2 kg/m2, and 115.5±13.0 cm, respectively. A total of 142 participants were screened (n=27 ineligible), and 53 consented. There were nine dropouts (17%). Overall satisfaction with the trial (4.7+ 0.6, scale: 1 (low) to 5 (high)) and with Fitbit (4.2+ 0.9) were high. Fitbit was worn an average of 81.7±19.3% of intervention days. In completers, mean weight loss was 4.6±3.5 kg or 4.7±3.5% (p< 0.001). Physical function measures of 30-s sit-to-stand repetitions increased from 13.5±5.7 to 16.7±5.9 (p< 0.001), 6-min walk improved by 42.0±77.3 m (p=0.005) but no differences were observed in gait speed or grip strength. Subjective measures of late-life function improved (3.4±4.7 points, p< 0.001). Conclusions A technology-based obesity intervention is feasible and acceptable to older adults with obesity and may lead to weight loss and improved physical function. Clinical trial registration Registered on Clinicaltrials.gov #NCT03104205. Registered on April 7, 2017. First participant enrolled on October 1st, 2018.

Exercise and Physical Activity for Older Adults

2014 ◽  
Vol 3 (1) ◽  
pp. 101-106 ◽  
Author(s):  
Wojtek J. Chodzko-Zajko
Keyword(s):  
Quality Of Life ◽  
Physical Activity ◽  
Risk Factors ◽  
Older Adults ◽  
Chronic Diseases ◽  
Successful Aging ◽  
Healthy Aging ◽  
Improve Quality ◽  
Reduce Risk

For more than half a century fellows of the National Academy of Kinesiology have enthusiastically advocated for the promotion and adoption of physically active lifestyles as an affordable and effective means to prevent chronic diseases and conditions, and enhance independence and high quality of life for older adults. It is possible to discern distinct evolutionary stages when examining scholarship related to the role of physical activity in the promotion of healthy aging. Research into physical activity and aging began with critical early studies that established the underlying scientific evidence for a relationship between physical activity and healthy aging. More recent work has addressed such topics as building consumer demand, developing policies and legislation to support active aging, and understanding the complex interrelationships between physical activity and other lifestyle factors in the prevention and treatment of chronic diseases and conditions. It is increasingly apparent that strategies to promote active and successful aging must be integrated into an effective public policy. Kinesiologists and other health professionals, working in collaboration with colleagues from other disciplines, can help to reduce risk factors for chronic disease and improve quality of life for older adults by building awareness of the importance of physical activity and by assisting with the development and implementation of appropriate and effective interventions that reduce risk factors and improve quality of life.

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