scholarly journals The Effect of Four Weeks Dietary Intervention with 8-Hour Time-Restricted Eating on Body Composition and Cardiometabolic Risk Factors in Young Adults

Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2164
Author(s):  
Su-Jeong Park ◽  
Jae-Won Yang ◽  
Yoon-Ju Song

Recently, intermittent fasting, also known as time-restricted eating (TRE), has become a popular diet trend. Compared to animal studies, there have been few studies and inconclusive findings investigating the effects of TRE in humans. In this study, we examined the effects of 8 h TRE on body weight and cardiometabolic risk factors in young adults who were mainly active at night. A total of 33 young adults completed the 8 h TRE for 4 weeks. Body composition was measured by bioelectrical impedance analysis at baseline and every 2 weeks, and blood samples were collected at baseline and week 4. Daily dietary records were logged throughout the intervention period. Participants experienced significant changes in body weight (−1.0 ± 1.4 kg), body mass index (−0.4 ± 0.5 kg/m2), and body fat (−0.4 ± 1.9%) after 4 weeks of TRE. When participants were divided into weight loss/gain groups based on their weight change in week 4, fat mass reduction was significantly higher in the weight loss group than in the weight gain group. Regarding cardiometabolic risk factors, levels of fasting insulin and insulin resistance improved in the weight loss group after intervention, but not in the weight gain group. All subjects showed late-shifted sleeping patterns, but no significant differences in sleep duration, sleep quality, or psychological measures between the two groups. When meal frequency and energy proportion were evaluated, the average meal frequency was 2.8 ± 0.5 and energy proportions of breakfast, lunch, dinner, and snacks were 4.5, 39.2, 37.6, and 18.5%, respectively; there were no significant differences between the two groups. However, the saturated fat intake at dinner was lower in the weight loss group (3.1 ± 3.2%, 6.0 ± 2.5% respectively). In conclusion, 8 h TRE can be applied as a lifestyle strategy to manage body weight and cardiometabolic risk factors among young adults with late chronotypes.


2021 ◽  
Vol 12 ◽  
Author(s):  
Jingxin Liu ◽  
Lin Zhu ◽  
Jing Liao ◽  
Xiaoguang Liu

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.



Nutrients ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 1326 ◽  
Author(s):  
Marleen van Baak ◽  
Thomas Larsen ◽  
Susan Jebb ◽  
Alfredo Martinez ◽  
Wim Saris ◽  
...  




Obesities ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 29-35
Author(s):  
Florent Besnier ◽  
Anil Nigam ◽  
Martin Juneau ◽  
Valérie Guilbeault ◽  
Elise Latour ◽  
...  

Limited data is available on the sex differences and individual responses of cardiometabolic parameters adjusted with potential confounders (i.e. sex, age, baseline values) after a longer term Mediterranean diet (MedD) and high intensity interval training (HIIT) in obese subjects. The objective of this study was to compare the effects of nine-month MedD counseling and supervised HIIT on cardiometabolic risk factors and individual responses in obese women (n = 99) and obese men (n = 35). Body composition (body mass, fat mass, lean body mass, waist circumference), cardiorespiratory fitness (METs), and cardiometabolic risk factors (blood pressure, blood sample variables) were measured at baseline and after nine months of a program combining MedD and HIIT two to three times a week. When adjusted with sex, age, and baseline values, obese women similarly improved their body composition, METs, and cardiometabolic risk factors vs. obese men. The proportion of responders according to clinical cutoff levels were the same in obese women and men. A longer MedD and HIIT intervention similarly improves body composition, cardiometabolic risk factors, and individual responses in obese women and men, even after adjustment of confounders (sex, age, baseline value).



2018 ◽  
Vol 107 (6) ◽  
pp. 921-931 ◽  
Author(s):  
Nicholas R Fuller ◽  
Amanda Sainsbury ◽  
Ian D Caterson ◽  
Gareth Denyer ◽  
Mackenzie Fong ◽  
...  


Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Erica P Gunderson ◽  
Cora E. Lewis ◽  
Xian Ning ◽  
Mark Pletcher ◽  
David Jacobs ◽  
...  

Background: Greater lactation duration has been associated with lower incidence of the metabolic syndrome, and self-reported type 2 diabetes and heart disease in women later in life. Two retrospective studies reported higher carotid artery intima-media thickness among parous women who never or inconsistently breastfed, but no clear association with duration. However, lactation history was recalled many years later and heart disease risk factors were not measured before pregnancy. We hypothesized that lactation duration has a graded inverse association with subclinical atherosclerosis in women during mid-life independent of pre-pregnancy cardiometabolic risk factors. Methods: We examined 846 women (46% Black), aged 18-30 years at enrollment in 1985-1986 (baseline) in the biracial Coronary Artery Risk Development in Young Adults (CARDIA) study. Women included delivered 1 or more live births from 1986-2005, had no history of heart disease or diabetes before pregnancies, and had maximum common carotid intima media thickness (ccIMT, mm) measured in 2005-2006 at ages 38-50 years. Lactation duration was recalled within 1 to 4 years of delivery. We categorized women into four lactation groups according to cumulative duration for all post-baseline births; 0-<1 month (n=262), 1-<6 months (n=210), 6-10 months (n=169) and >10 months (n=205). Multiple linear regression models estimated mean ccIMT (95% CI) among lactation categories adjusted for pre-pregnancy cardiometabolic risk factors [BMI, systolic blood pressure (SBP), HDL-C, HOMA-IR], parity, socio-demographics (age, race, education), and smoking. We also assessed weight gain and change in SBP as mediators of the lactation and ccIMT association. Results: Increasing lactation duration showed a graded inverse association with mean ccIMT; differences between >10 months vs. 0<1 month groups ranged from -0.062 from the unadjusted model (p<0.001) and -0.029 from adjusted models (p=0.046) that included pre-pregnancy risk factors and other covariates. Weight gain and SBP change during the 20-year follow up slightly attenuated (~10%) the ccIMT-association with increased lactation duration. Conclusions: Greater lactation duration is associated with lower mean ccIMT independent of cardiometabolic risk factors measured before pregnancy, parity, socio-demographics and smoking. Lactation may have lasting favorable effects on cardiometabolic risk factors for heart disease.



2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
Kristina Arline Harris ◽  
Shiela West ◽  
Jack Vanden Heuvel ◽  
Satya Jonnalagadda ◽  
Penny Kris-Etherton


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