scholarly journals Continuous energy restriction (CER) plus 16/8 time-restricted feeding improve body composition and metabolic parameters in overweight and obese, but no more than CER alone

2021 ◽  
pp. 1-9
Author(s):  
Daiani Evangelista Ribeiro ◽  
Andrezza Fernanda Santiago ◽  
Wilson Cesar de Abreu
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Energy Restriction ◽  
Fat Free Mass ◽  
Intermittent Fasting ◽  
Restricted Feeding ◽  
Physically Active ◽  
Metabolic Markers ◽  
Continuous Energy ◽  
Before And After

BACKGROUND: Current guidelines recommend continuous energy restriction (CER) and lifestyle change as the basis of obesity treatment. Recently, several intermittent fasting protocols have received considerable interest as an alternative weight loss strategy. OBJECTIVE: This study compared the effects of 8-week CER versus CER along with 16/8 time-restricted feeding (16/8 TRF) on body composition and metabolic markers in excess weight physically active subjects. METHODS: Twenty-four physically active obese or overweight adults, from both genders, were split into two groups: CER plus 16/8 TRF (CER + TRF) and CER. Both groups consumed a 20%energy restriction diet. CER plus 16/8 TRF were asked to consume their meals during an 8-hour open window (12 to 20 pm). We evaluated body composition and metabolic biomarkers before and after the intervention. RESULTS: We observed a reduction in body weight (BW), body mass index (BMI), waist circumference (WC), and fat mass (FM) in both groups. However, a decrease in fat-free mass (FFM) and skeletal muscle mass (SMM) was seen only in the CER. Although fasting glucose did not change, we observed a decrease in fasting insulin and HOMA-IR in both groups. Leptin decrease in both treatments. Cortisol levels increased only in the CER group. CONCLUSIONS: We can conclude that CER + TRF is as effective as CER to promote weight and fat loss, but, CER + TRF seems to be more efficient in maintaining lean body mass.

scholarly journals Effects of Time-Restricted Feeding on Supramaximal Exercise Performance and Body Composition: A Randomized and Counterbalanced Crossover Study in Healthy Men

2021 ◽  
Vol 18 (14) ◽  
pp. 7227
Author(s):  
Joana M. Correia ◽  
Inês Santos ◽  
Pedro Pezarat-Correia ◽  
Cláudia Minderico ◽  
Brad J. Schoenfeld ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Exercise Performance ◽  
Fat Free Mass ◽  
Restricted Feeding ◽  
Supramaximal Exercise ◽  
Mean Power ◽  
Post Intervention ◽  
Dietary Record

Using a crossover design, we explored the effects of both short- and long-term time-restricted feeding (TRF) vs. regular diet on Wingate (WnT) performance and body composition in well-trained young men. Twelve healthy male physical education students were included (age: 22.4 ± 2.8 years, height: 174.0 ± 7.1 cm, body mass: 73.6 ± 9.5 kg, body mass index: 24.2 ± 2.0 kg/m2). The order of dieting was randomized and counterbalanced, and all participants served as their own controls. TRF was limited to an 8-h eating window and non-TRF involved a customary meal pattern. Participants performed WnT tests and body composition scans at baseline, post-one and post-four weeks of the assigned diet. Before testing, participants were asked to fill out a dietary record over four consecutive days and were instructed to continue their habitual training throughout the study. Energy intake and macronutrient distribution were similar at baseline in both conditions. WnT mean power and total work output increased post-four weeks of TRF. Both conditions were similarly effective in increasing fat-free mass after four weeks of intervention. However, there was no correlation between change in fat-free mass and WnT mean power after TRF. TRF did not elicit any changes in WnT performance or body composition one week post-intervention. Thus, long-term TRF can be used in combination with regular training to improve supramaximal exercise performance in well-trained men.

scholarly journals Body composition changes in physically active individuals consuming ketogenic diets: a systematic review

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Julie L. Coleman ◽  
Christopher T. Carrigan ◽  
Lee M. Margolis
Keyword(s):  
Systematic Review ◽  
Body Composition ◽  
Body Mass ◽  
Risk Of Bias ◽  
Fat Free Mass ◽  
Cochrane Library ◽  
Ideal Strength ◽  
Physically Active ◽  
Ketogenic Diets ◽  
Study Intervention

Abstract Background To achieve ideal strength/power to mass ratio, athletes may attempt to lower body mass through reductions in fat mass (FM), while maintaining or increasing fat-free mass (FFM) by manipulating their training regimens and diets. Emerging evidence suggests that consumption of high-fat, ketogenic diets (KD) may be advantageous for reducing body mass and FM, while retaining FFM. Methods A systematic review of the literature was conducted using PubMed and Cochrane Library databases to compare the effects of KD versus control diets (CON) on body mass and composition in physically active populations. Randomized and non-randomized studies were included if participants were healthy (free of chronic disease), physically active men or women age ≥ 18 years consuming KD (< 50 g carbohydrate/d or serum or whole blood β-hydroxybutyrate (βhb) > 0.5 mmol/L) for ≥14 days. Results Thirteen studies (9 parallel and 4 crossover/longitudinal) that met the inclusion criteria were identified. Aggregated results from the 13 identified studies show body mass decreased 2.7 kg in KD and increased 0.3 kg in CON. FM decreased by 2.3 kg in KD and 0.3 kg in CON. FFM decreased by 0.3 kg in KD and increased 0.7 kg in CON. Estimated energy balance based on changes in body composition was − 339 kcal/d in KD and 5 kcal/d in CON. Risk of bias identified some concern of bias primarily due to studies which allowed participants to self-select diet intervention groups, as well as inability to blind participants to the study intervention, and/or longitudinal study design. Conclusion KD can promote mobilization of fat stores to reduce FM while retaining FFM. However, there is variance in results of FFM across studies and some risk-of-bias in the current literature that is discussed in this systematic review.

scholarly journals The Effects of Intermittent Fasting Combined with Resistance Training on Lean Body Mass: A Systematic Review of Human Studies

Nutrients ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2349
Author(s):  
Stephen Keenan ◽  
Matthew B. Cooke ◽  
Regina Belski
Keyword(s):  
Body Composition ◽  
Resistance Training ◽  
Lean Body Mass ◽  
Body Mass ◽  
Fat Mass ◽  
Energy Restriction ◽  
Human Studies ◽  
Future Research ◽  
Intermittent Fasting ◽  
Eligibility Criteria

Diets utilising intermittent fasting (IF) as a strategic method to manipulate body composition have recently grown in popularity, however, dietary practices involving fasting have also been followed for centuries for religious reasons (i.e., Ramadan). Regardless of the reasons for engaging in IF, the impacts on lean body mass (LBM) may be detrimental. Previous research has demonstrated that resistance training promotes LBM accrual, however, whether this still occurs during IF is unclear. Therefore, the objective of this review is to systematically analyse human studies investigating the effects of variations of IF combined with resistance training on changes in LBM in previously sedentary or trained (non-elite) individuals. Changes in body weight and fat mass, and protocol adherence were assessed as a secondary objective. This review followed the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. MEDLINE, CINAHL, PubMed and SportDiscus databases were searched for articles investigating IF, combined with resistance training that reported measures of body composition. Eight studies met the eligibility criteria. LBM was generally maintained, while one study reported a significant increase in LBM. Body fat mass or percentage was significantly reduced in five of eight studies. Results suggest that IF paired with resistance training generally maintains LBM, and can also promote fat loss. Future research should examine longer-term effects of various forms of IF combined with resistance training compared to traditional forms of energy restriction. Prospero registration CRD42018103867.

scholarly journals Effectiveness of Intermittent Fasting and Time-Restricted Feeding Compared to Continuous Energy Restriction for Weight Loss

Nutrients ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2442 ◽  
Author(s):  
Corey A. Rynders ◽  
Elizabeth A. Thomas ◽  
Adnin Zaman ◽  
Zhaoxing Pan ◽  
Victoria A. Catenacci ◽  
...  
Keyword(s):  
Weight Loss ◽  
Health Impact ◽  
Overweight And Obesity ◽  
Energy Restriction ◽  
Current Evidence ◽  
Intermittent Fasting ◽  
Restricted Feeding ◽  
Obesity Epidemic ◽  
Continuous Energy ◽  
Modest Weight Loss

The current obesity epidemic is staggering in terms of its magnitude and public health impact. Current guidelines recommend continuous energy restriction (CER) along with a comprehensive lifestyle intervention as the cornerstone of obesity treatment, yet this approach produces modest weight loss on average. Recently, there has been increased interest in identifying alternative dietary weight loss strategies that involve restricting energy intake to certain periods of the day or prolonging the fasting interval between meals (i.e., intermittent energy restriction, IER). These strategies include intermittent fasting (IMF; >60% energy restriction on 2–3 days per week, or on alternate days) and time-restricted feeding (TRF; limiting the daily period of food intake to 8–10 h or less on most days of the week). Here, we summarize the current evidence for IER regimens as treatments for overweight and obesity. Specifically, we review randomized trials of ≥8 weeks in duration performed in adults with overweight or obesity (BMI ≥ 25 kg/m2) in which an IER paradigm (IMF or TRF) was compared to CER, with the primary outcome being weight loss. Overall, the available evidence suggests that IER paradigms produce equivalent weight loss when compared to CER, with 9 out of 11 studies reviewed showing no differences between groups in weight or body fat loss.

scholarly journals Functional Mobility and Basic Motor Skills in Patients with Multiple Sclerosis and Its Relation to the Anthropometrical Status and Body Composition Parameters

Medicina ◽  
2019 ◽  
Vol 55 (12) ◽  
pp. 773 ◽  
Author(s):  
Edyta Matusik ◽  
Aldona Augustak ◽  
Jacek Durmala
Keyword(s):  
Multiple Sclerosis ◽  
Body Composition ◽  
Body Mass ◽  
Motor Skills ◽  
Clinical Status ◽  
Functional Mobility ◽  
Fat Free Mass ◽  
Composition Analysis ◽  
Disability Status ◽  
Before And After

Background and objectives: Patients with multiple sclerosis (MS) have many potential risk factors (spasticity, immobilization, glucocorticoids use) which can deteriorate the anthropometrical status and body composition and may have a potential negative impact on functional mobility and basic motor skill improvement after physiotherapy. The aim of the study was to assess the functional mobility and basic motor skills in patients with MS and to correlate them with disability and anthropometrical status and body composition parameters. Materials and Methods: Timed Up-and-Go Test (TUG) and six-min walk test (6MWT) were performed in 36 patients with MS before and after 4 weeks of physiotherapy. Body mass index (BMI), waist-to-height ratio (W/HtR), and waist-to-hip ratio (WHR) were assessed in this group. Body composition was evaluated by bioelectrical impedance analysis (BIA) and fat mass (FAT), fat free mass (FFM), total body water (TBW), and predicted muscle mass (PMM) were expressed as percentage of body mass. Clinical status was assessed by Expanded Disability Status Scale (EDSS) and Ambulatory Index (AI) scales. Results: After physiotherapy, there was a significant improvement in functional mobility and basic motor skills assessed by total distance in 6MWT (p < 0.001) and in TUG trials (p < 0.001). Positive significant correlations were found between the results obtained in both tests (either before and after physiotherapy) vs. FFM, TBW, and PMM, whilst worse results in functional mobility and basic motor skills correlated significantly with higher WHtR, WHR, and FAT (p < 0.05). Clinical status (EDSS) was significantly related to the WHtR and body composition parameters with the same manner as the results in the either 6MWT and TUG. However, there were no significant relationships between BMI vs. either clinical status (EDSS, AI) or functional mobility tests results in patients with MS. Conclusions: Functional mobility and basic motor skills may be significantly improved during physiotherapy, but they are related to the anthropometrical status and body composition of MS patients. Moreover, disability status is also significantly related to these parameters. Body composition deterioration seems to be the important target for the therapeutic intervention in MS patients. For proper nutritional status assessment in patients with MS, body composition analysis or WHtR instead BMI should to be used.

scholarly journals Matched Weight Loss Through Intermittent or Continuous Energy Restriction Does Not Lead To Compensatory Increases in Appetite and Eating Behavior in a Randomized Controlled Trial in Women with Overweight and Obesity

2019 ◽  
Vol 150 (3) ◽  
pp. 623-633 ◽  
Author(s):  
Kristine Beaulieu ◽  
Nuno Casanova ◽  
Pauline Oustric ◽  
Jake Turicchi ◽  
Catherine Gibbons ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Eating Behavior ◽  
Repeated Measures ◽  
Overweight And Obesity ◽  
Energy Restriction ◽  
Fat Free Mass ◽  
Group Differences ◽  
Continuous Energy ◽  
Ad Libitum

ABSTRACT Background Continuous energy restriction (CER) is purported to be problematic because of reductions in fat-free mass (FFM), compensatory motivation to overeat, and weakened satiety. Intermittent energy restriction (IER) is an alternative behavioral weight loss (WL) strategy that may mitigate some of these limitations. Objective The objective of the DIVA study was to compare the effects of CER and IER on appetite when the degree of WL (≥5%) is matched. Methods Women with overweight/obesity (BMI 25.0–34.9 kg/m2; age 18–55 y) were recruited for this controlled-feeding RCT via CER (25% daily energy restriction) or IER (alternating ad libitum and 75% energy restriction days). Probe days were conducted at baseline and post-intervention to assess body composition, ad libitum energy intake and subjective appetite in response to a fixed-energy breakfast, and eating behavior traits. After baseline measurements, participants were allocated to CER (n = 22) or IER (n = 24). Per protocol analyses (≥5% WL within 12 wk) were conducted with use of repeated measures ANOVA. Results Thirty of 37 completers reached ≥5% WL [CER (n = 18): 6.3 ± 0.8% in 57 ± 16 d, IER (n = 12): 6.6 ± 1.1% in 67 ± 13 d; % WL P = 0.43 and days P = 0.10]. Fat mass [−3.9 (95% CI: −4.3, −3.4) kg] and FFM [−1.3 (95% CI: −1.6, −1.0) kg] were reduced post-WL (P &lt; 0.001), with no group differences. Self-selected meal size decreased post-WL in CER (P = 0.03) but not in IER (P = 0.19). Hunger AUC decreased post-WL (P &lt; 0.05), with no group differences. Satiety quotient remained unchanged and was similar in both groups. Both interventions improved dietary restraint, craving control, susceptibility to hunger, and binge eating (P &lt; 0.001). Conclusions Controlled ≥5% WL via CER or IER did not differentially affect changes in body composition, reductions in hunger, and improvements in eating behavior traits. This suggests that neither CER nor IER lead to compensatory adaptations in appetite in women with overweight/obesity. This trial was registered at clinicaltrials.gov as NCT03447600.

The Influence of 8 Weeks of Whey-Protein and Leucine Supplementation on Physical and Cognitive Performance

2010 ◽  
Vol 20 (5) ◽  
pp. 409-417 ◽  
Author(s):  
Thomas B. Walker ◽  
Jessica Smith ◽  
Monica Herrera ◽  
Breck Lebegue ◽  
Andrea Pinchak ◽  
...  
Keyword(s):  
Body Composition ◽  
Whey Protein ◽  
Cognitive Performance ◽  
Lean Body Mass ◽  
Body Mass ◽  
Fat Free Mass ◽  
Upper Body ◽  
Leucine Supplementation ◽  
Before And After ◽  
Air Force Fitness

The purpose of this study was to investigate the ability of whey-protein and leucine supplementation to enhance physical and cognitive performance and body composition. Thirty moderately fit participants completed a modified Air Force fitness test, a computer-based cognition test, and a dual-energy X-ray-absorptiometry scan for body composition before and after supplementing their daily diet for 8 wk with either 19.7 g of whey protein and 6.2 g leucine (WPL) or a calorie-equivalent placebo (P). Bench-press performance increased significantly from Week 1 to Week 8 in the WPL group, whereas the increase in the P group was not significant. Push-up performance increased significantly for WPL, and P showed a nonsignificant increase. Total mass, fat-free mass, and lean body mass all increased significantly in the WPL group but showed no change in the P group. No differences were observed within or between groups for crunches, chin-ups, 3-mile-run time, or cognition. The authors conclude that supplementing with whey protein and leucine may provide an advantage to people whose performance benefits from increased upper body strength and/or lean body mass.

scholarly journals Air Displacement Plethysmography and Resistance Exercise

2015 ◽  
Author(s):  
Joan Grossman ◽  
Ronald Deitrick
Keyword(s):  
Body Composition ◽  
Resistance Exercise ◽  
Body Mass ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Fat Free Mass ◽  
Body Volume ◽  
Body Composition Assessment ◽  
Air Displacement Plethysmography ◽  
Before And After

Purpose: The purpose of this study was to examine the effect of resistance exercise (RE) on body composition using air-displacement plethysmography (ADP) within 2 hours of completing RE. Methods: Thirteen university students (9 males and 4 females; 18.8±0.5 yrs; mean ± SD) volunteered for this study. The RE program (55.4±8.7 min) consisted of a combination of upper- and lower-body extremity exercises and abdominal exercises for a total of nine different exercises. Relative body fat (BF) was assessed (1.76+0.4 hr) using ADP before and after the RE along with skinfold (SF) measures, body mass (BM) and respiratory quotient. Results: Statistically significant reductions in pre-post RE relative BF measurements (p=0.036) were observed using ADP along with statistically significant reductions in body volume (BV) (p=0.005), body mass (BM) (p=0.038) and fat mass (FM) (p=0.020). The mean intraclass correlation coefficients (ICC) for these variables was 0.99. No significant pre-post differences in fat-free mass (FFM), body mass index (BMI) or skinfold (SF) values were reported. Conclusions: This study demonstrates the potential adverse effects of assessing relative BF within 2 hours after RE. Significant differences in pre-post relative BF were supported by significant reductions in BV, BM, and FM. The results of this study support the manufacturer guidelines using ADP and RE restriction prior to body composition assessment.

scholarly journals Functional Mobility and Basic Motor Skills in Patients with Multiple Sclerosis and its Relation to the Anthropometrical Status and Body Composition Parameters

2019 ◽  
Author(s):  
Edyta Matusik ◽  
Aldona Augustak ◽  
Jacek Durmala
Keyword(s):  
Multiple Sclerosis ◽  
Body Composition ◽  
Body Mass ◽  
Motor Skills ◽  
Clinical Status ◽  
Functional Mobility ◽  
Fat Free Mass ◽  
Composition Analysis ◽  
Timed Up And Go ◽  
Before And After

Background and objectives: Patients with multiple sclerosis (MS) have many potential factors (spasticity, immobilization, glucocorticoids use) which can deteriorate the anthropometrical status and body composition and may have the potential impact on the functional mobility and basic motor skills improvement after physiotherapy. The aim of the study was to assess the functional mobility and basic motor skills in patients with MS and to correlate them with disability and anthropometrical status and body composition parameters. Materials and Methods: Timed Up-and-Go test (TUG), and six-minute walk test (6MWT) were performed in 36 patients with MS before and after 4 weeks of physiotherapy. Body mass index (BMI), waist to height ratio (W/HtR), and waist-to-hip ratio (WHR) were assessed in this group. Body composition was evaluated by bioelectrical impedance analysis (BIA) and fat mass (FAT), fat free mass (FFM), total body water (TBW) and predicted muscle mass (PMM) were expressed as percentage of body mass. Clinical status was assessed by EDSS and AI scales. Results: After physiotherapy, there was a significant improvement in functional mobility and basic motor skills assessed by total distance in 6MWT (p&lt;0.001) and in TUG trials (p&lt;0.001). Positive significant correlations were found between the results obtained in both tests (either before and after physiotherapy) vs. FFM, TBW and PMM, whilst worse results in functional mobility and basic motor skills correlated significantly with higher WHtR, WHR and FAT (p&lt;0.05). Clinical status (EDSS) were significantly related to the WHtR and body composition parameters with the same manner as the results in the either 6MWT and TUG. However, there were no significant relationships between BMI vs. either clinical status (EDSS, AI) and functional mobility tests results in patients with MS. Conclusions: Functional mobility and basic motor skills may be significantly improved during the physiotherapy, but they are related to the anthropometrical status and body composition of MS patients. Moreover, disability status is also significantly related to this parameters. Body composition deterioration seems to be the important target for the therapeutic intervention in MS patients. For proper nutritional status assessment in patients with MS, body composition analysis or WHtR instead BMI should to be used.

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