scholarly journals Weight Cycling in Women: Adaptation or Risk?

2020 ◽  
Author(s):  
Katelyn J. Carey ◽  
Wendy Vitek
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Weight Gain ◽  
Pregnancy Complications ◽  
Weight Regain ◽  
Reproductive Age ◽  
Cardiometabolic Health ◽  
Surrogate Markers ◽  
Weight Cycling ◽  
Gut Peptides

AbstractObesity, dieting, and weight cycling are common among reproductive-age women. Weight cycling refers to intentional weight loss followed by unintentional weight regain. Weight loss is accompanied by changes in gut peptides, adipose hormones, and energy expenditure that promote weight regain to a tightly regulated set point. While weight loss can improve body composition and surrogate markers of cardiometabolic health, it is hypothesized that the weight regain can result in an overshoot effect, resulting in excess weight gain, altered body composition, and negative effects on surrogate markers of cardiometabolic health. Numerous observational studies have examined the association of weight cycling and health outcomes. There appears to be modest association between weight cycling with type 2 diabetes mellitus and dyslipidemia in women, but no association with hypertension, cardiovascular events, and overall cancer risk. Interestingly, mild weight cycling may be associated with a decreased risk of overall and cardiovascular mortality. Little is known about the effects of weight cycling in the preconception period. Although obesity and weight gain are associated with pregnancy complications, preconception weight loss does not appear to mitigate the risk of most pregnancy complications related to obesity. Research on preconception weight cycling may provide insight into this paradox.

scholarly journals Effects of Extreme Weight Loss on Cardiometabolic Health in Children With Metabolic Syndrome: A Metabolomic Study

2021 ◽  
Vol 12 ◽  
Author(s):  
Jingxin Liu ◽  
Lin Zhu ◽  
Jing Liao ◽  
Xiaoguang Liu
Keyword(s):  
Risk Factors ◽  
Metabolic Syndrome ◽  
Weight Loss ◽  
Body Composition ◽  
Organic Acids ◽  
Cardiometabolic Risk ◽  
The Body ◽  
Cardiometabolic Risk Factors ◽  
Plasma Metabolites ◽  
Cardiometabolic Health

Objectives: To evaluate the effect of extreme weight loss programs on circulating metabolites and their relationship with cardiometabolic health in children with metabolic syndrome.Methods: This study was a quasi-experimental design with a pretest and post-test. Thirty children with metabolic syndrome and aged 10–17years were recruited to an extreme weight loss program (i.e., exercise combined with diet control). The primary outcomes included plasma metabolites, body composition, and cardiometabolic risk factors. A total of 324 metabolites were quantitatively detected by an ultra-performance liquid chromatography coupled to tandem mass spectrometry system, and the variable importance in the projection (VIP) value of each metabolite was calculated by the orthogonal projection to latent structures discriminant analysis. The fold change (FC) and p value of each metabolite were used to screen differential metabolites with the following values: VIP>1, p value<0.05, and |log2FC|>0.25. Pathway enrichment and correlation analyses between metabolites and cardiometabolic risk factors were also performed.Result: A large effect size was observed, presenting a weight loss of −8.9kg (Cohen’s d=1.00, p<0.001), body mass index reduction of −3.3kg/m2 (Cohen’s d=1.47, p<0.001), and body fat percent reduction of −4.1 (%) (Cohen’s d=1.22, p<0.001) after the intervention. Similar improvements were found in total cholesterol (Cohen’s d=2.65, p<0.001), triglycerides (Cohen’s d=2.59, p<0.001), low-density lipoprotein cholesterol (Cohen’s d=2.81, p<0.001), glucose metabolism, and blood pressure. A total of 59 metabolites were changed after the intervention (e.g., aminoacyl-tRNA biosynthesis, glycine, serine, and threonine metabolism; nitrogen metabolism, tricarboxylic acid cycle, and phenylalanine, tyrosine, and tryptophan biosynthesis). The changes in metabolites (e.g., amino acids, fatty acids, organic acids, and carnitine) were related to lipid metabolism improvement (p<0.05). Organic acids and carnitines were associated with changes in the body composition (p<0.05).Conclusion: Exercise combined with dietary control improved the body composition and cardiometabolic health in children with metabolic syndrome, and these changes may be related to plasma metabolites.

scholarly journals Associations between the proportion of fat-free mass loss during weight loss, changes in appetite, and subsequent weight change: results from a randomized 2-stage dietary intervention trial

2020 ◽  
Vol 111 (3) ◽  
pp. 536-544 ◽  
Author(s):  
Jake Turicchi ◽  
Ruairi O'Driscoll ◽  
Graham Finlayson ◽  
Cristiana Duarte ◽  
Mark Hopkins ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Energy Balance ◽  
Weight Regain ◽  
Dietary Intervention ◽  
Body Weight Loss ◽  
Weight Loss Maintenance ◽  
Fat Free Mass ◽  
Weight Outcomes ◽  
Dietary Intervention Trial

ABSTRACT Background Dynamic changes in body composition which occur during weight loss may have an influential role on subsequent energy balance behaviors and weight. Objectives The aim of this article is to consider the effect of proportionate changes in body composition during weight loss on subsequent changes in appetite and weight outcomes at 26 wk in individuals engaged in a weight loss maintenance intervention. Methods A subgroup of the Diet, Obesity, and Genes (DiOGenes) study (n = 209) was recruited from 3 European countries. Participants underwent an 8-wk low-calorie diet (LCD) resulting in ≥8% body weight loss, during which changes in body composition (by DXA) and appetite (by visual analog scale appetite perceptions in response to a fixed test meal) were measured. Participants were randomly assigned into 5 weight loss maintenance diets based on protein and glycemic index content and followed up for 26 wk. We investigated associations between proportionate fat-free mass (FFM) loss (%FFML) during weight loss and 1) weight outcomes at 26 wk and 2) changes in appetite perceptions. Results During the LCD, participants lost a mean ± SD of 11.2 ± 3.5 kg, of which 30.4% was FFM. After adjustment, there was a tendency for %FFML to predict weight regain in the whole group (β: 0.041; 95% CI: −0.001, 0.08; P = 0.055), which was significant in men (β: 0.09; 95% CI: 0.02, 0.15; P = 0.009) but not women (β: 0.01; 95% CI: −0.04, 0.07; P = 0.69). Associations between %FFML and change in appetite perceptions during weight loss were inconsistent. The strongest observations were in men for hunger (r = 0.69, P = 0.002) and desire to eat (r = 0.61, P = 0.009), with some tendencies in the whole group and no associations in women. Conclusions Our results suggest that composition of weight loss may have functional importance for energy balance regulation, with greater losses of FFM potentially being associated with increased weight regain and appetite. This trial was registered at clinicaltrials.gov as NCT00390637.

scholarly journals Rationale and Protocol for a Randomized Controlled Trial Comparing Fast versus Slow Weight Loss in Postmenopausal Women with Obesity—The TEMPO Diet Trial

Healthcare ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 85 ◽  
Author(s):  
Radhika Seimon ◽  
Alice Gibson ◽  
Claudia Harper ◽  
Shelley Keating ◽  
Nathan Johnson ◽  
...  
Keyword(s):  
Weight Loss ◽  
Randomized Controlled Trial ◽  
Body Composition ◽  
Eating Disorder ◽  
Controlled Trial ◽  
Energy Restriction ◽  
Cardiometabolic Health ◽  
Meal Replacement ◽  
Randomized Controlled ◽  
Eating Disorder Behaviors

Very low energy diets (VLEDs), commonly achieved by replacing all food with meal replacement products and which result in fast weight loss, are the most effective dietary obesity treatment available. VLEDs are also cheaper to administer than conventional, food-based diets, which result in slow weight loss. Despite being effective and affordable, these diets are underutilized by healthcare professionals, possibly due to concerns about potential adverse effects on body composition and eating disorder behaviors. This paper describes the rationale and detailed protocol for the TEMPO Diet Trial (Type of Energy Manipulation for Promoting optimal metabolic health and body composition in Obesity), in a randomized controlled trial comparing the long-term (3-year) effects of fast versus slow weight loss. One hundred and one post-menopausal women aged 45–65 years with a body mass index of 30–40 kg/m2 were randomized to either: (1) 16 weeks of fast weight loss, achieved by a total meal replacement diet, followed by slow weight loss (as for the SLOW intervention) for the remaining time up until 52 weeks (“FAST” intervention), or (2) 52 weeks of slow weight loss, achieved by a conventional, food-based diet (“SLOW” intervention). Parameters of body composition, cardiometabolic health, eating disorder behaviors and psychology, and adaptive responses to energy restriction were measured throughout the 3-year trial.

Effects of yo-yo diet, caloric restriction, and olestra on tissue distribution of hexachlorobenzene

2005 ◽  
Vol 288 (2) ◽  
pp. G292-G299 ◽  
Author(s):  
Ronald J. Jandacek ◽  
Nicole Anderson ◽  
Min Liu ◽  
Shuqin Zheng ◽  
Qing Yang ◽  
...  
Keyword(s):  
Weight Loss ◽  
Adipose Tissue ◽  
Weight Gain ◽  
Caloric Restriction ◽  
Fold Increase ◽  
The Body ◽  
Tissue Loss ◽  
Weight Cycling ◽  
Diet Regimen ◽  
The Brain

Chlorinated hydrocarbons are lipophilic, toxic, and persistent in the environment and animal tissues. They enter the body in food and are stored in adipose tissue. Loss of body fat through caloric restriction mobilizes stored lipophilic xenobiotics and results in distribution to other tissues. We have studied the reversibility of this process in mice that followed a regimen of body weight cycling. Weight gain was followed by weight loss, a second gain, and a second loss (“yo-yo diet regimen”). We measured the distribution of orally gavaged [14C]hexachlorobenzene, which is sparingly metabolized. We found that weight cycling has different effects in different organs. Continued weight loss resulted in a threefold increase of 14C amount and concentration in the brain. After weight regain, 14C in the brain decreased but then increased again after a second weight loss. Weight loss resulted in an increase in the concentration of 14C in adipose tissue without changing the total amount in that tissue. Weight loss and regain resulted in an increase of 14C in the liver, which reflected an increase of fat in the liver. The regimen of weight gain and loss was repeated in mice gavaged with [14C]hexachlorobenzene, with one group receiving the nonabsorbable fat olestra in the diet. Combined dietary olestra and caloric restriction caused a 30-fold increase in the rate of excretion of 14C relative to an ad libitum diet or a reduced caloric diet alone. Distribution of 14C into the brain resulting from the restricted diet was reduced by 50% by dietary olestra.

scholarly journals Impact of body-composition methodology on the composition of weight loss and weight gain

2013 ◽  
Vol 67 (5) ◽  
pp. 446-454 ◽  
Author(s):  
M Pourhassan ◽  
B Schautz ◽  
W Braun ◽  
C-C Gluer ◽  
A Bosy-Westphal ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Weight Gain

Effect of feeding a weight loss food beyond a caloric restriction period on body composition and resistance to weight gain in cats

2015 ◽  
Vol 247 (4) ◽  
pp. 365-374 ◽  
Author(s):  
Amanda M. Floerchinger ◽  
Matthew I. Jackson ◽  
Dennis E. Jewell ◽  
Jennifer M. MacLeay ◽  
Kevin A. Hahn ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Weight Gain ◽  
Caloric Restriction ◽  
Effect Of Feeding

scholarly journals Dietary Intakes Differ by Body Composition Goals: An Observational Study of Professional Rugby Union Players in New Zealand

2019 ◽  
Vol 13 (6) ◽  
pp. 155798831989135 ◽  
Author(s):  
Katherine E. Black ◽  
Chloe Hindle ◽  
Rebecca McLay-Cooke ◽  
Rachel C. Brown ◽  
Claire Gibson ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Weight Gain ◽  
Dietary Assessment ◽  
Rugby Union ◽  
Dietary Intakes ◽  
Intensive Training ◽  
Competitive Season ◽  
Weight Loss Group ◽  
Rugby Players

Preseason in rugby union is a period of intensive training where players undergo conditioning to prepare for the competitive season. In some cases, this includes modifying body composition through weight gain or fat loss. This study aimed to describe the macronutrient intakes of professional rugby union players during pre-season training. It was hypothesized that players required to gain weight would have a higher energy, carbohydrate and protein intake compared to those needing to lose weight. Twenty-three professional rugby players completed 3 days of dietary assessment and their sum of eight skinfolds were assessed. Players were divided into three groups by the team coaches and medical staff: weight gain, weight maintain and weight loss. Mean energy intakes were 3,875 ± 907 kcal·d−1 (15,965 ± 3,737 kJ·d−1) (weight gain 4,532 ± 804 kcal·d−1; weight maintain 3,825 ± 803 kcal·d−1; weight loss 3,066 ± 407 kcal·d−1) and carbohydrate intakes were 3.7 ± 1.2 g·kg−1·d−1 (weight gain 4.8 ± 0.9 g.kg−1·d−1; weight maintain 2.8 ± 0.7 g·kg−1·d−1; weight loss 2. 6 ± 0.7 g·kg−1·d−1). The energy and carbohydrate intakes are similar to published intakes among rugby union players. There were significant differences in energy intake and the percent of energy from protein between the weight gain and the weight loss group.

Abstract 3519: Modest Fat Gain Causes Endothelial Dysfunction In Lean Healthy Humans: A Randomized Blinded Controlled Trial

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Abel Romero Corral ◽  
Justo Sierra-Johnson ◽  
Marek Orban ◽  
Apoor S Gami ◽  
Fatima H Sert Kuniyoshi ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Weight Loss ◽  
Body Composition ◽  
Weight Gain ◽  
Endothelial Dysfunction ◽  
Endothelial Function ◽  
Brachial Artery ◽  
Controlled Trial ◽  
Subcutaneous Fat ◽  
Flow Mediated Dilation

Background: Endothelial dysfunction assessed by flow mediated dilation (FMD) of the brachial artery has been identified as an independent predictor of cardiovascular events. However, whether weight gain impairs endothelial function is unknown. Methods: A randomized blinded controlled-trial to assess the effects of weight gain on endothelial function. After a weight maintenance period supervised by an experience dietitian, volunteers were randomized to gain weight (4 kg) or maintain weight. We recruited lean (BMI 18.5–24.9 kg/m 2 ) healthy volunteers (no diseases, medications and non-smokers) from the community. Using ultrasound, endothelial function was measured by FMD and non-flow mediated dilation (NFMD) of the brachial artery in the early morning (6:30 a.m.). Endothelial function was measured at baseline, after fat gain at 8 weeks and after weight loss at 16 weeks for fat-gainers and at baseline and follow-up (8 weeks) for weight maintainers. Body composition techniques to measure body fat %, such as dual x-ray absorptiometry and abdominal CT scans were performed. Results: We recruited 35 fat-gainers and 8 weight maintainers. Mean age was 29 ± 6 years and 18 (42 %) were women. There were no differences in age, anthropometric and body composition measurements, blood pressure, heart rate or apnea hypopnea index at baseline between both groups. After an average gain of 4 kg, the fat-gainer group significantly increased their total, visceral and subcutaneous fat. Brachial artery FMD and NFMD remained unchanged in weight maintainers. However, it decreaed in fat-gainers (FMD=9.1 ± 3 vs. 7.6 ± 3.2, p=0.003 and NFMD=12.0 ± 4.9 vs. 10.1 ± 6.0, p=0.01), but recovered to baseline after subjects shed the gained weight (basleline vs. recovery: FMD=9.1 ± 3 vs. 9.0 ± 3, p=NS and NFMD =12.0 ± 4.9 vs.12.6 ± 5.0, p=NS). Visceral fat gain, but not subcutaneous fat gain was significantly correlated with the decrease in brachial artery FMD (rho =−0.42, p=0.004 and rho =−0.22, p=0.15, respectively). Conclusions: In lean healthy young subjects, modest weight gain results in impaired endothelial function, even in the absence of changes in blood pressure. Endothelial funcion recovers after weight loss. Viscerar rather than subcutaneous fat predicts endothelial dysfunction.

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