Gender-related changes in body composition, muscle strength and power output after a short-term multidisciplinary weight loss intervention in morbid obesity

2005 ◽  
Vol 28 (8) ◽  
pp. 494-501 ◽  
Author(s):  
A. Sartorio ◽  
N. A. Maffiuletti ◽  
F. Agosti ◽  
C. L. Lafortuna
Keyword(s):  
Morbid Obesity ◽  
Weight Loss ◽  
Body Composition ◽  
Muscle Strength ◽  
Power Output ◽  
Weight Loss Intervention ◽  
Short Term

scholarly journals Gender variations of body composition, muscle strength and power output in morbid obesity

2005 ◽  
Vol 29 (7) ◽  
pp. 833-841 ◽  
Author(s):  
C L Lafortuna ◽  
N A Maffiuletti ◽  
F Agosti ◽  
A Sartorio
Keyword(s):  
Morbid Obesity ◽  
Body Composition ◽  
Muscle Strength ◽  
Power Output ◽  
Gender Variations

scholarly journals FEASIBILITY OF WEIGHTED VEST USE DURING A DIETARY WEIGHT LOSS INTERVENTION AND EFFECTS ON BODY COMPOSITION AND PHYSICAL FUNCTION IN OLDER ADULTS

2018 ◽  
pp. 1-6
Author(s):  
E. NORMANDIN ◽  
D. YOW ◽  
C. CROTTS ◽  
J. KIEL ◽  
K.M. BEAVERS ◽  
...  
Keyword(s):  
Older Adults ◽  
Weight Loss ◽  
Body Composition ◽  
Pilot Study ◽  
Muscle Strength ◽  
Lower Extremity ◽  
Physical Function ◽  
Weight Loss Intervention ◽  
Dietary Weight Loss ◽  
Weighted Vest

Background: While intentional weight loss in older adults with obesity yields clinically important health benefits there is a need to minimize the negative effects of weight loss on concomitant loss of muscle mass and strength. Data show wearing weighted vests during exercise improves lean mass and lower extremity strength, however the efficacy of wearing a weighted vest during a period of weight loss to mitigate muscle and strength loss is not known. Objectives: This study examined the feasibility of daily weighted vest use during a dietary weight loss intervention, and examined effects of vest use on body composition and physical function in well-functioning older adults with obesity. Design: Randomized, controlled pilot study. Setting: Wake Forest Baptist Medical Center in Winston-Salem, NC. Participants: 37 older (age=65-79 yrs), obese (BMI=30-40 kg/m2) sedentary men and women. Interventions: 22-week behavioral diet intervention (targeting 10% weight loss, 1100-1300 kcals/day) with (Diet+Vest; n=20) or without (Diet; n=17) weighted vest use (goal of 10 hours/day with weight added weekly according to individual loss of body mass). Measurements: Body composition by dual-energy x-ray absorptiometry and measures of physical function, mobility, and muscle strength/power. Results: Average weighted vest use was 6.7±2.2 hours/day and the vest-wear goal of 10 hrs/day was achieved for 67±22% of total intervention days. Five participants reported adverse events from wearing the vest (all back pain or soreness). Both groups lost a similar amount of weight (Diet= -11.2±4.4 kg; Diet+Vest = -11.0±6.3 kg; p<0.001), with no differences between groups (p=0.25). Fat mass, lean mass, and % body fat decreased significantly (p<0.0001), with no differences between groups. Compared to Diet+Vest, the Diet intervention resulted in greater decreases in leg power (p<0.02), with no other between group differences in physical function. Conclusion: This pilot study showed that vest use during dietary weight loss is feasible and safe in well-functioning older adults with obesity. Larger studies are needed to definitively determine whether external replacement of lost weight during caloric restriction may preserve lower extremity muscle strength and power.

scholarly journals The Relationship between Body Mass Index and Mammographic Density during a Premenopausal Weight Loss Intervention Study

Cancers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 3245
Author(s):  
Emma C. Atakpa ◽  
Adam R. Brentnall ◽  
Susan Astley ◽  
Jack Cuzick ◽  
D. Gareth Evans ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Weight Loss ◽  
Body Mass ◽  
Breast Density ◽  
Small Sample ◽  
Weight Loss Intervention ◽  
Short Term ◽  
Dense Area ◽  
Short Term Change ◽  
Term Change

We evaluated the association between short-term change in body mass index (BMI) and breast density during a 1 year weight-loss intervention (Manchester, UK). We included 65 premenopausal women (35–45 years, ≥7 kg adult weight gain, family history of breast cancer). BMI and breast density (semi-automated area-based, automated volume-based) were measured at baseline, 1 year, and 2 years after study entry (1 year post intervention). Cross-sectional (between-women) and short-term change (within-women) associations between BMI and breast density were measured using repeated-measures correlation coefficients and multivariable linear mixed models. BMI was positively correlated with dense volume between-women (r = 0.41, 95%CI: 0.17, 0.61), but less so within-women (r = 0.08, 95%CI: −0.16, 0.28). There was little association with dense area (between-women r = −0.12, 95%CI: −0.38, 0.16; within-women r = 0.01, 95%CI: −0.24, 0.25). BMI and breast fat were positively correlated (volume: between r = 0.77, 95%CI: 0.69, 0.84, within r = 0.58, 95%CI: 0.36, 0.75; area: between r = 0.74, 95%CI: 0.63, 0.82, within r = 0.45, 95%CI: 0.23, 0.63). Multivariable models reported similar associations. Exploratory analysis suggested associations between BMI gain from 20 years and density measures (standard deviation change per +5 kg/m2 BMI: dense area: +0.61 (95%CI: 0.12, 1.09); fat volume: −0.31 (95%CI: −0.62, 0.00)). Short-term BMI change is likely to be positively associated with breast fat, but we found little association with dense tissue, although power was limited by small sample size.

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

Abstract P290: Short-term Weight Change and Long-term Mortality in the Trials of Hypertension Prevention

Circulation ◽  
2016 ◽  
Vol 133 (suppl_1) ◽  
Author(s):  
Nancy R Cook ◽  
Lawrence J Appel ◽  
Paul K Whelton
Keyword(s):  
Weight Loss ◽  
Weight Change ◽  
Phase 1 ◽  
Total Mortality ◽  
Weight Loss Intervention ◽  
Phase 2 ◽  
Short Term ◽  
Hypertension Prevention ◽  
Long Term Mortality

Introduction: Although weight loss has favorable effects on intermediate outcomes, such as blood pressure and insulin resistance, few studies have examined its effects on long-term outcomes including total mortality. Methods: In the Trials of Hypertension Prevention (TOHP) individuals aged 30-54 years with high normal BP were randomized to a weight loss intervention, to one of several other lifestyle or dietary supplement interventions, or to usual care. All participants from Phase 1 (1987-90) and Phase 2 (1990-5) were followed for mortality through 2013. The association of weight change during any of the interventions with long-term mortality up to 18-24 years after the trial periods was examined among 3828 participants who fell into a high baseline weight stratum, defined as body mass index at least 26 kg/m2 in men and 24 kg/m2 in women. Results and Conclusions: There were 1477 high-weight participants in Phase 1 and 2351 in Phase 2, of whom 21% and 50%, respectively, were assigned to a weight loss intervention. Overall, mean weight change during the trial period was -1.8 lbs (-0.8% of baseline body weight) over 1.5 years in Phase 1 and 1.6 lbs (0.8%) over 3-4 years in Phase 2. A total of 556 (15%) lost > 5%, 1,101 (29%) lost <=5%, 1,567 (41%) gained less than 5%, and 604 (16%) gained > 5% in body weight. Corresponding hazard ratios (HRs) for total mortality were 0.82 (95% confidence interval (CI)=0.57-1.18), 0.94 (95% CI=0.72-1.23), 1.00 (reference), and 1.29 (95% CI=0.92-1.80) (p-trend = 0.046). There was a direct linear relationship with percent change in weight during the trial period and later mortality (HR=1.14 per 5% change, 95% CI=1.02-1.28, p=0.019). This association persisted throughout the course of mortality follow-up (Figure). In these healthy individuals taking part in lifestyle and nutrition supplement trials , short-term weight change was directly associated with mortality about two decades later. These results are consistent with a long-term beneficial effect of presumed intentional weight loss on total mortality.

Impact of a randomized weight loss trial on breast tissue markers in breast cancer survivors.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e12501-e12501
Author(s):  
Christina Marie Dieli-Conwright ◽  
Maura Harrigan ◽  
Brenda Cartmel ◽  
Anees B. Chagpar ◽  
Yalai Bai ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Weight Loss ◽  
Body Composition ◽  
Cancer Survivors ◽  
Breast Cancer Survivors ◽  
Breast Tissue ◽  
Serum Levels ◽  
Serum Biomarkers ◽  
Weight Loss Intervention ◽  
Tissue Biomarkers

e12501 Background: Weight loss interventions are effective approaches to reduce body weight and alter serum biomarkers in breast cancer survivors, however the impact on breast tissue biomarkers is unknown. The Lifestyle, Exercise and Nutrition (LEAN) study was a randomized trial designed to test the effect of a weight loss intervention on body composition and breast tissue and serum biomarkers. Methods: Fifity-one women with a BMI ³ 25.0 kg/m2 diagnosed with breast cancer, who had completed chemotherapy and/or radiation therapy were randomized to weight loss intervention or usual care. Breast tissue biopsies from the unaffected breast, fasting serum samples, and body composition were measured at baseline and 6-months. Ki67, insulin receptor (IR), CD68 and CD163 were measured by Automated Quantitative Analysis (AQUA) method. Mean baseline to 6-month changes were compared using ANCOVA adjusting for baseline values. Results: Pre- and post-intervention biopsies were conducted in 49 and 42 women respectively, with both pre- and post- epithelial tissue available from 25 women; epithelial tissue was unavailable in the remaining 66 women. Women were 56.8 ± 8.9 years old, diagnosed 3.3 + 3.8 years prior, primarily Stage I breast cancer (54%), with a BMI of 32.8 ± 6.0 kg/m2. At baseline, breast tissue levels of IR were inversely associated with both percent body fat (r = -0.47, p = .03) and serum insulin levels (r = -0.45, p = .04); serum insulin levels were inversely associated with CD68 (r = -0.47, p = .03). Significant between-group biomarker changes are presented in Table 1. At month 6, loss in percent body fat was associated with increased IR (r = -0.42, p = .05). Increased CD68 breast tissue expression was associated with reductions in serum levels of CRP (r = -0.49, p=0.02). There was no significant effect of the intervention on IR expression or Ki67 (p>0.10). Conclusions: Breast tissue biopsies are feasible to collect in a clinical research setting among breast cancer survivors. A 6-month weight loss intervention led to decreased levels of CD163 in breast tissue and serum levels of leptin, and increased serum levels of adiponectin among breast cancer survivors. At baseline and month 6, changes in breast tissue biomarkers were favorably associated with serum biomarkers and body composition. Future confirmation is required to confirm the added benefit of tissue biomarkers beyond serum as an endpoint for lifestyle interventions among breast cancer survivors. Clinical trial information: NCT02110641. [Table: see text]

scholarly journals Weight Loss Intervention Before Total Knee Replacement: A 12-Month Randomized Controlled Trial

2019 ◽  
pp. 145749691988381 ◽  
Author(s):  
A. Liljensøe ◽  
J. O. Laursen ◽  
H. Bliddal ◽  
K. Søballe ◽  
I. Mechlenburg
Keyword(s):  
Quality Of Life ◽  
Weight Loss ◽  
Body Composition ◽  
Total Knee Replacement ◽  
Knee Replacement ◽  
Diet Group ◽  
Control Group ◽  
Weight Loss Intervention ◽  
Total Knee

Background and Aims: Obesity is an increasing problem in patients after total knee replacement. The aim of this study was to investigate whether a weight loss intervention before primary total knee replacement would improve quality of life, knee function, mobility, and body composition 1 year after surgery. Material and Methods: Patients scheduled for total knee replacement due to osteoarthritis of the knee and obesity were randomized to a control group receiving standard care or to an intervention group receiving 8-week low-energy diet before total knee replacement. Patient-reported quality of life, 6-Min Walk Test, and body composition by dual-energy X-ray absorptiometry were assessed before intervention for the diet group, and within 1 week preoperatively for both groups, and the changes in outcome from baseline to 1 year after total knee replacement were compared between groups. The number of participants was lower than planned, which might introduce a type-2 error and underestimate the trend for a better outcome after weight loss. Results: The analyses are based on a total of 76 patients, 38 in each group. This study showed major improvement in both study groups in quality of life and knee function, though no statistically significant differences between the groups were observed 1 year after total knee replacement. The average weight loss after 8-week preoperative intervention was 10.7 kg and consisted of a 6.7 kg reduction in fat mass. One year after total knee replacement, the participants in the diet group managed to maintain the weight reduction, whereas there was no change in the control group. Conclusion: The results suggest that it is feasible and safe to implement an intensive weight loss program shortly before total knee replacement. The preoperative intervention resulted in a 10% body weight loss, improved body composition, lower cardiovascular risk factors, and sustained s-leptin.

scholarly journals Variables Associated with Short-Term Weight Loss in a Cohort of Patients with Morbid Obesity According to Age and Three Types of Bariatric Surgery

2020 ◽  
Vol 9 (11) ◽  
pp. 3537
Author(s):  
Maria D. Alvarez-Bermudez ◽  
Flores Martin-Reyes ◽  
Luis Ocaña-Wilhelmi ◽  
Francisco J. Moreno-Ruiz ◽  
Juan Alcaide Torres ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Morbid Obesity ◽  
Weight Loss ◽  
Age Groups ◽  
The Other ◽  
Atherogenic Index ◽  
Short Term ◽  
Atherogenic Index Of Plasma ◽  
Biochemical Variables ◽  
One Year

Background The percentage of excess weight lost (%EWL) after bariatric surgery (BS) shows great discrepancies from one individual to another. Objective To evaluate the %EWL one year after BS and to determine the existence of baseline biomarkers associated with weight loss. Methods We studied 329 patients with morbid obesity undergoing three types of BS (biliopancreatic diversion (BPD), Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG)), depending on the %EWL one year after surgery: good responders (GR) (%EWL ≥ 50%) and non-responders (NR) (%EWL < 50%). Results The GR presented a higher percentage of change in anthropometric and biochemical variables compared to the NR group, even within each type of BS. There was a greater percentage of GR among those who underwent RYGB. The patients who underwent SG showed the lowest decrease in biochemical variables, both in GR and NR. Within the GR group, those with a lower age showed greater improvement compared to the other age groups. A %EWL ≥50% was negatively associated with the age and atherogenic index of plasma (AIP), and positively with the type of BS (RYGB). Conclusions The GR group was associated with lower age and AIP and undergoing RYGB. Additionally, those patients who underwent SG showed a lower metabolic improvement.

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