Changes in body composition with a hypocaloric diet combined with sedentary, moderate and high-intense physical activity: a randomized controlled trial

Abstract Background There is evidence showing the effectiveness of a hypocaloric diet and the increase in physical activity on weight loss. However, the combined role of these factors, not only on weight loss but also body composition, remains unclear. The purpose of this study was to investigate the effect of a hypocaloric diet on the body composition of obese adult women throughout different degrees of physical activity during a weight loss program. Methods One hundred and seventeen healthy female volunteers were randomly assigned to one of the experimental groups: a control group with a low-level prescription of physical activity (1–4 METs), moderate physical activity group that performed 10.000 steps walking (5–8 METs) and intense physical activity group that trained exercises by at least 70% of VO2max three times a week (> 8 METs). All subjects followed a hypocaloric diet designed with a reduction of 500 kcal/day. Nutritional counseling was provided throughout the study period to help ensure dietary adherence. Results We found no differences in body weight compared to moderate and intense physical activity (ßstand. = − 0.138 vs. ßstand. = − 0.139). Body fat was lower in women following an intense activity (ßstand. = − 0.436) than those with moderate exercise (ßstand. = − 0.231). The high-intense activity also increased muscle mass at the end of the intervention, standing out above the moderate activity (ßstand. = 0.182 vs. ßstand. = 0.008). Conclusions These findings indicate that a hypocaloric diet, without prescription of physical activity, is adequate to lose weight in the short term (12 weeks), but physical activity is vital to modify the body composition in women with obesity. Body fat was lower when women practiced a moderate exercise compared to hypocaloric diet only, but an intense physical activity was the most effective protocol to obtain a reduction of body fat and maintain muscle mass. Trial registration The study protocol complied with the Declaration of Helsinki for medical studies, it was approved by the bioethical committee of Córdoba University, in the Department of Health at the Regional Government of Andalusia (Act n°284, ref.4156) and retrospectively registered in clinicaltrials.gov (NCT03833791). Registered 2 January 2019.

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Changes in body composition with a hypocaloric diet combined with sedentary, moderate and high-intense physical activity: a randomized controlled trial.

10.21203/rs.2.14138/v1 ◽

2019 ◽

Author(s):

Alberto Hernández-Reyes ◽

Fernando Cámara-Martos ◽

Rafael Molina-Luque ◽

Manuel Romero-Saldaña ◽

Guillermo Molina-Recio ◽

...

Keyword(s):

Physical Activity ◽

Weight Loss ◽

Body Composition ◽

Body Fat ◽

The Body ◽

Hypocaloric Diet ◽

Moderate Exercise ◽

Intense Activity ◽

Physical Activity Group ◽

Intense Physical Activity

Abstract Background There is evidence showing the effectiveness of a hypocaloric diet and the increase in physical activity on weight loss. However, the combined role of these factors, not only on weight loss but also body composition, remains unclear. The purpose of this study was to investigate the effect of hypocaloric diet on the body composition of obese adult women when different degrees of physical activity are trained during a weight loss program. Methods One hundred and seventeen healthy female volunteers were randomly assigned to 1 of 3 one of the experimental groups: a control group with a low-level prescription of physical activity (1-4 METs), moderate physical activity group that performed 10.000 steps walking (5-8 METs) and intense physical activity group that trained exercises by at least 70% of VO2max three times a week (>8 METs). All subjects followed a hypocaloric diet designed with a reduction of 500 kcal/day. Nutritional counseling was provided throughout the study period to help ensure dietary adherence. Results No differences in body weight were found when compared moderate and intense physical activity (ß stand. = -0.138 vs ß stand. = -0.139). Body fat was lower in women following an intense activity (ß stand. = -0.436) than those with moderate exercise (ß stand. = -0.231). Intense activity also increased muscle mass at the end of the intervention, standing out above the moderate activity (ß stand. = 0.182 vs. ß stand. = 0.008). Conclusions These findings indicate that hypocaloric diet, without prescription of physical activity, is effective to lose weight, in the short term (12 weeks) but Physical activity is the working target to modify the body composition in women with obesity. Body fat was lower when women practiced a moderate exercise compared to hypocaloric diet only, but an intense physical activity was the most effective protocol to obtain a reduction of body fat and maintain muscle mass. Trial registration Trial registration: ClinicalTrial.gov, NCT03833791. Registered 1 January 2019 - Retrospectively registered.

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Changes in body composition with a hypocaloric diet combined with sedentary, moderate and high-intense physical activity: a randomized controlled trial.

10.21203/rs.2.14138/v2 ◽

2019 ◽

Author(s):

Alberto Hernández-Reyes ◽

Fernando Cámara-Martos ◽

Rafael Molina-Luque ◽

Manuel Romero-Saldaña ◽

Guillermo Molina-Recio ◽

...

Keyword(s):

Physical Activity ◽

Weight Loss ◽

Body Composition ◽

Body Fat ◽

The Body ◽

Hypocaloric Diet ◽

Moderate Exercise ◽

Intense Activity ◽

Physical Activity Group ◽

Intense Physical Activity

Abstract Background There is evidence showing the effectiveness of a hypocaloric diet and the increase in physical activity on weight loss. However, the combined role of these factors, not only on weight loss but also body composition, remains unclear. The purpose of this study was to investigate the effect of a hypocaloric diet on the body composition of obese adult women throughout different degrees of physical activity during a weight loss program. Methods One hundred and seventeen healthy female volunteers were randomly assigned to one of the experimental groups: a control group with a low-level prescription of physical activity (1-4 METs), moderate physical activity group that performed 10.000 steps walking (5-8 METs) and intense physical activity group that trained exercises by at least 70% of VO2max three times a week (>8 METs). All subjects followed a hypocaloric diet designed with a reduction of 500 kcal/day. Nutritional counseling was provided throughout the study period to help ensure dietary adherence. Results We found no differences in body weight compared to moderate and intense physical activity (ßstand. = -0.138 vs. ßstand. = -0.139). Body fat was lower in women following an intense activity (ßstand. = -0.436) than those with moderate exercise (ßstand. = -0.231). The high-intense activity also increased muscle mass at the end of the intervention, standing out above the moderate activity (ßstand. = 0.182 vs. ßstand. = 0.008). Conclusions These findings indicate that a hypocaloric diet, without prescription of physical activity, is adequate to lose weight in the short term (12 weeks), but physical activity is vital to modify the body composition in women with obesity. Body fat was lower when women practiced a moderate exercise compared to hypocaloric diet only, but an intense physical activity was the most effective protocol to obtain a reduction of body fat and maintain muscle mass. Trial registration The study protocol complied with the Declaration of Helsinki for medical studies, it was approved by the bioethical committee of Córdoba University, in the Department of Health at the Regional Government of Andalusia (Act nº284, ref.4156) and retrospectively registered in clinicaltrials.gov (NCT03833791). Registered 2 January 2019

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Changes in body composition with a hypocaloric diet combined with sedentary, moderate and high-intense physical activity: a randomized controlled trial.

10.21203/rs.2.17775/v2 ◽

2019 ◽

Author(s):

Alberto Hernández-Reyes ◽

F. Cámara-Martos ◽

R. Molina-Luque ◽

M. Romero-Saldaña ◽

G. Molina-Recio ◽

...

Keyword(s):

Physical Activity ◽

Weight Loss ◽

Body Composition ◽

Body Fat ◽

The Body ◽

Hypocaloric Diet ◽

Moderate Exercise ◽

Intense Activity ◽

Physical Activity Group ◽

Intense Physical Activity

Abstract Background There is evidence showing the effectiveness of a hypocaloric diet and the increase in physical activity on weight loss. However, the combined role of these factors, not only on weight loss but also body composition, remains unclear. The purpose of this study was to investigate the effect of a hypocaloric diet on the body composition of obese adult women throughout different degrees of physical activity during a weight loss program. Methods One hundred and seventeen healthy female volunteers were randomly assigned to one of the experimental groups: a control group with a low-level prescription of physical activity (1-4 METs), moderate physical activity group that performed 10.000 steps walking (5-8 METs) and intense physical activity group that trained exercises by at least 70% of VO2max three times a week (>8 METs). All subjects followed a hypocaloric diet designed with a reduction of 500 kcal/day. Nutritional counseling was provided throughout the study period to help ensure dietary adherence. Results We found no differences in body weight compared to moderate and intense physical activity (ßstand. = -0.138 vs. ßstand. = -0.139). Body fat was lower in women following an intense activity (ßstand. = -0.436) than those with moderate exercise (ßstand. = -0.231). The high-intense activity also increased muscle mass at the end of the intervention, standing out above the moderate activity (ßstand. = 0.182 vs. ßstand. = 0.008). Conclusions These findings indicate that a hypocaloric diet, without prescription of physical activity, is adequate to lose weight in the short term (12 weeks), but physical activity is vital to modify the body composition in women with obesity. Body fat was lower when women practiced a moderate exercise compared to hypocaloric diet only, but an intense physical activity was the most effective protocol to obtain a reduction of body fat and maintain muscle mass. Trial registration The study protocol complied with the Declaration of Helsinki for medical studies, it was approved by the bioethical committee of Córdoba University, in the Department of Health at the Regional Government of Andalusia (Act nº284, ref.4156) and retrospectively registered in clinicaltrials.gov (NCT03833791). Registered 2 January 2019

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Changes in body composition with a hypocaloric diet combined with sedentary, moderate and high-intense physical activity: a randomized controlled trial.

10.21203/rs.2.17775/v1 ◽

2019 ◽

Author(s):

Alberto Hernández-Reyes ◽

F. Cámara-Martos ◽

R. Molina-Luque ◽

M. Romero-Saldaña ◽

G. Molina-Recio ◽

...

Keyword(s):

Physical Activity ◽

Weight Loss ◽

Body Composition ◽

Body Fat ◽

The Body ◽

Hypocaloric Diet ◽

Moderate Exercise ◽

Intense Activity ◽

Physical Activity Group ◽

Intense Physical Activity

Abstract Background There is evidence showing the effectiveness of a hypocaloric diet and the increase in physical activity on weight loss. However, the combined role of these factors, not only on weight loss but also body composition, remains unclear. The purpose of this study was to investigate the effect of a hypocaloric diet on the body composition of obese adult women throughout different degrees of physical activity during a weight loss program. Methods One hundred and seventeen healthy female volunteers were randomly assigned to one of the experimental groups: a control group with a low-level prescription of physical activity (1-4 METs), moderate physical activity group that performed 10.000 steps walking (5-8 METs) and intense physical activity group that trained exercises by at least 70% of VO2max three times a week (>8 METs). All subjects followed a hypocaloric diet designed with a reduction of 500 kcal/day. Nutritional counseling was provided throughout the study period to help ensure dietary adherence. Results We found no differences in body weight compared to moderate and intense physical activity (ßstand. = -0.138 vs. ßstand. = -0.139). Body fat was lower in women following an intense activity (ßstand. = -0.436) than those with moderate exercise (ßstand. = -0.231). The high-intense activity also increased muscle mass at the end of the intervention, standing out above the moderate activity (ßstand. = 0.182 vs. ßstand. = 0.008). Conclusions These findings indicate that a hypocaloric diet, without prescription of physical activity, is adequate to lose weight in the short term (12 weeks), but physical activity is vital to modify the body composition in women with obesity. Body fat was lower when women practiced a moderate exercise compared to hypocaloric diet only, but an intense physical activity was the most effective protocol to obtain a reduction of body fat and maintain muscle mass. Trial registration The study protocol complied with the Declaration of Helsinki for medical studies, it was approved by the bioethical committee of Córdoba University, in the Department of Health at the Regional Government of Andalusia (Act nº284, ref.4156) and retrospectively registered in clinicaltrials.gov (NCT03833791). Registered 2 January 2019

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Changes in body composition with a hypocaloric high-protein diet combined with sedentary, moderate and high-intense physical activity in overweight or obese males: a 6-month randomized controlled trial

10.21203/rs.3.rs-25907/v1 ◽

2020 ◽

Author(s):

Alberto Hernández-Reyes ◽

A. Vidal ◽

F. Cámara-Martos ◽

R. Molina-Luque ◽

R. Moreno-Rojas

Keyword(s):

Physical Activity ◽

Weight Loss ◽

Body Composition ◽

High Intensity ◽

High Protein Diet ◽

High Protein ◽

Protein Diet ◽

Activity Group ◽

Physical Activity Group ◽

Intense Physical Activity

Abstract Objectives Although the effectiveness of high-intensity training has been widely recognized as positive in athletes, its application in a clinical context is not well established. There is enough evidence to confirm that high-intensity routines are safe and that at-risk populations, such as for overweight and obese subjects, can help from these weight loss treatments. The purpose of this study was to lead a trial to test whether manipulation of physical activity in extension to high protein diet intake would induce changes in total weight and body composition. Methods Sixty-eight healthy male volunteers were randomly assigned to one of the experimental groups: a control group with a low-level prescription of physical activity (1–4 METs), moderate physical activity group that performed 10.000 steps walking per day (5–8 METs) and intense physical activity group that trained exercises by at least 70% of VO2max three times a week (> 8 METs). All subjects followed a high-protein diet designed with a reduction of 500 kcal/day. Nutritional counseling was provided throughout the study period to help ensure dietary adherence. This intervention was delivered over twenty-four sessions as weekly one-on-one, face-to-face 30-min consultations. Results A significant reduction in body fat percentage was observed in the intense physical activity group (-20.9 ± 8.8 (CI95%: -25.6 – -16.2), p < 0.001). The change in muscle mass did not produce any significant differences between groups (p > 0.05). Concerning weight, a notable weight loss was found in those subjects who performed moderate or intense physical exercise, vs. those who did light exercise, (p < 0.001) and (p < 0.003), respectively. Conclusion our data strongly suggest that resistance training should be included, whenever possible, in any dietary treatment for improving the body composition of men with overweight or obesity.

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Math for Real: Losing Weight versus Losing Fat

Mathematics Teaching in the Middle School ◽

10.5951/mtms.15.3.0184 ◽

2009 ◽

Vol 15 (3) ◽

pp. 184-185

Keyword(s):

Weight Loss ◽

Body Composition ◽

Body Fat ◽

Exercise Program ◽

The Body ◽

Lean Tissue ◽

Personal Trainer ◽

Healthy Body

Measuring weight loss is important in determining if an exercise program works, but it is not the only objective. Losing body fat and maintaining a healthy body composition are more important. Body composition consists of lean tissue and fat. The body needs a certain amount of fat for essential functions (energy, regulating temperature). Karin Cottman, a certified personal trainer in Middleburg Heights, Ohio, keeps these ideas in mind when developing workout plans and diet goals for her clients.

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Effectiveness of an mHealth Intervention Combining a Smartphone App and Smart Band on Body Composition in an Overweight and Obese Population: Randomized Controlled Trial (EVIDENT 3 Study) (Preprint)

10.2196/preprints.21771 ◽

2020 ◽

Author(s):

Cristina Lugones-Sanchez ◽

Maria Antonia Sanchez-Calavera ◽

Irene Repiso-Gento ◽

Esther G Adalia ◽

J Ignacio Ramirez-Manent ◽

...

Keyword(s):

Physical Activity ◽

Clinical Trial ◽

Weight Loss ◽

Body Composition ◽

Body Fat ◽

Vigorous Physical Activity ◽

Activity Level ◽

Smartphone App ◽

Mhealth Intervention ◽

Randomized Controlled

BACKGROUND Mobile health (mHealth) is currently among the supporting elements that may contribute to an improvement in health markers by helping people adopt healthier lifestyles. mHealth interventions have been widely reported to achieve greater weight loss than other approaches, but their effect on body composition remains unclear. OBJECTIVE This study aimed to assess the short-term (3 months) effectiveness of a mobile app and a smart band for losing weight and changing body composition in sedentary Spanish adults who are overweight or obese. METHODS A randomized controlled, multicenter clinical trial was conducted involving the participation of 440 subjects from primary care centers, with 231 subjects in the intervention group (IG; counselling with smartphone app and smart band) and 209 in the control group (CG; counselling only). Both groups were counselled about healthy diet and physical activity. For the 3-month intervention period, the IG was trained to use a smartphone app that involved self-monitoring and tailored feedback, as well as a smart band that recorded daily physical activity (Mi Band 2, Xiaomi). Body composition was measured using the InBody 230 bioimpedance device (InBody Co., Ltd), and physical activity was measured using the International Physical Activity Questionnaire. RESULTS The mHealth intervention produced a greater loss of body weight (–1.97 kg, 95% CI –2.39 to –1.54) relative to standard counselling at 3 months (–1.13 kg, 95% CI –1.56 to –0.69). Comparing groups, the IG achieved a weight loss of 0.84 kg more than the CG at 3 months. The IG showed a decrease in body fat mass (BFM; –1.84 kg, 95% CI –2.48 to –1.20), percentage of body fat (PBF; –1.22%, 95% CI –1.82% to 0.62%), and BMI (–0.77 kg/m2, 95% CI –0.96 to 0.57). No significant changes were observed in any of these parameters in men; among women, there was a significant decrease in BMI in the IG compared with the CG. When subjects were grouped according to baseline BMI, the overweight group experienced a change in BFM of –1.18 kg (95% CI –2.30 to –0.06) and BMI of –0.47 kg/m2 (95% CI –0.80 to –0.13), whereas the obese group only experienced a change in BMI of –0.53 kg/m2 (95% CI –0.86 to –0.19). When the data were analyzed according to physical activity, the moderate-vigorous physical activity group showed significant changes in BFM of –1.03 kg (95% CI –1.74 to –0.33), PBF of –0.76% (95% CI –1.32% to –0.20%), and BMI of –0.5 kg/m2 (95% CI –0.83 to –0.19). CONCLUSIONS The results from this multicenter, randomized controlled clinical trial study show that compared with standard counselling alone, adding a self-reported app and a smart band obtained beneficial results in terms of weight loss and a reduction in BFM and PBF in female subjects with a BMI less than 30 kg/m2 and a moderate-vigorous physical activity level. Nevertheless, further studies are needed to ensure that this profile benefits more than others from this intervention and to investigate modifications of this intervention to achieve a global effect. CLINICALTRIAL Clinicaltrials.gov NCT03175614; https://clinicaltrials.gov/ct2/show/NCT03175614. INTERNATIONAL REGISTERED REPORT RR2-10.1097/MD.0000000000009633

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The changes in proportion and body composition of a woman practicing group fitness training for three months.

HIGHER SCHOOL’S PULSE ◽

10.5604/01.3001.0014.0926 ◽

2020 ◽

Vol 13 (4) ◽

pp. 1-7

Author(s):

Agata Mroczek ◽

Magdalena Chawałek

Keyword(s):

Physical Activity ◽

Body Composition ◽

Lean Body Mass ◽

Body Mass ◽

Body Fat ◽

The Body ◽

Composition Analysis ◽

Training Cycle ◽

Group Fitness ◽

Fitness Training

Background: Physical activity is an excellent form of prevention of modern diseases. The most popular form of physical activity chosen by women is group fitness activities. Women are most likely to focus on exercises for the lower parts of the body (thighs, buttocks, abdomen). In recent years, dance classes (e.g. Zumba) or exercises on mini trampolines have become very popular. Regular fitness training contributes to positive changes in the proportions and body composition. Aim of the study: The aim of the study was to assess the proportions and body composition of a woman via a 3-month group fitness training program. Case report: The study involved a woman aged 26, participating in fitness classes three times a week for a period of three months. The woman participated in the following training cycle: twice a week (Monday and Wednesday) in the Jumping Frog interval training on a trampoline; twice a week (Monday and Friday) in ZUMBA® classes; and once a week (Wednesday) in ABT classes (abdomen, buttocks, thighs). Her height and weight, waist and hips circumference, and the thickness of three skinfolds (subscapular, triceps, abdominal) were measured. Body mass index (BMI) and waist to hip ratio (WHR) were calculated and body composition analysis (% of body fat, lean body mass) was performed. Two measurements were made: the first at the beginning of the training cycle, the second on completion. After three months of training, there were a decrease in body weight (2.2 kg), BMI (0.77 kg/m2), waist circumference (4 cm), hip circumference (2 cm), WHR (0.03), subscapular, abdominal and triceps skinfold (1 mm, 3 mm, 3 mm), body fat (2.6%) and perimeters, and an increase in lean body mass (1 kg). Conclusions: This study shows a positive effect of fitness training on body proportions and body composition.

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Step-Defined Physical Activity Is Associated With Weight Loss and Changes in Body Composition and Fat Distribution in Response to Diet Interventions: The POUNDS Lost Trial

Current Developments in Nutrition ◽

10.1093/cdn/nzab055_069 ◽

2021 ◽

Vol 5 (Supplement_2) ◽

pp. 1259-1259

Author(s):

Qiaochu Xue ◽

Xiang Li ◽

Hao Ma ◽

Tao Zhou ◽

Yoriko Heianza ◽

...

Keyword(s):

Physical Activity ◽

Weight Loss ◽

Body Composition ◽

Body Weight ◽

Body Fat ◽

Fat Distribution ◽

Tissue Mass ◽

Adipose Tissue Mass ◽

Fat Composition ◽

Protein Diets

Abstract Objectives To examine whether objectively measured physical activity (PA) is associated with weight loss and changes in body composition and fat distribution in response to weight-loss diet interventions. Methods This study included 535 overweight or obese participants randomly assigned to 4 weight-loss diets varying in macronutrient intake with physical activity measured objectively with pedometers in the POUNDS Lost trial. The associations of step defined PA or the changes in PA with the changes in obesity measurements including body weight (BW), waist circumference (WC), body fat composition assessed by the dual-energy X-ray absorptiometry (DEXA) scans, body fat distribution assessed by the computed tomography (CT) were examined at the 6 and 24 months. We also examined whether the associations were modified by diet interventions. Results The increase of step-defined PA was significantly predictive of weight loss and decrease in all measurements of body fat composition and distribution in response to diet interventions over 24 months (P < 0.0001 for all). We also observed significant inverse associations of changes in PA with changes in BW (P < 0.0001), WC (P < 0.0001), body fat composition (P < 0.05 for total fat, total lean, total fat mass %, and trunk fat %) and fat distribution (P < 0.05 for total adipose tissue mass (TAT), visceral adipose tissue mass (VAT), deep subcutaneous adipose tissue mass (DSAT)) from baseline to 6 months, when the maximum weight loss was achieved. Dietary fat or protein intake modified the associations between changes in PA and changes in body weight and waist circumference over 24 months; greater reduction in these measures was observed in participants with high-fat or low-protein diets than those in the low-fat or high-protein diets (P interaction < 0.05 for all). Conclusions Our results indicate that objectively measured PA is inversely related to the changes in body weight, body composition, and fat distribution in response to weight-loss diets, and such relation is more evident in people with high-fat or low-protein diets. Funding Sources The study was supported by grants from the National Heart, Lung, and Blood Institute, the National Institute of Diabetes and Digestive and Kidney Diseases, the Fogarty International Center, and Tulane Research Centers of Excellence Awards.

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Push Notifications From a Mobile App to Improve the Body Composition of Overweight or Obese Women: Randomized Controlled Trial (Preprint)

10.2196/preprints.13747 ◽

2019 ◽

Cited By ~ 2

Author(s):

Alberto Hernández-Reyes ◽

Fernando Cámara-Martos ◽

Guillermo Molina Recio ◽

Rafael Molina-Luque ◽

Manuel Romero-Saldaña ◽

...

Keyword(s):

Physical Activity ◽

Clinical Trial ◽

Weight Loss ◽

Body Composition ◽

Controlled Trial ◽

Intervention Group ◽

The Body ◽

Control Group ◽

Obese Women ◽

Randomized Controlled

BACKGROUND Technology—in particular, access to the Internet from a mobile device—has forever changed the way we relate to others and how we behave in our daily life settings. In recent years, studies have been carried out to analyze the effectiveness of different actions via mobile phone in the field of health: telephone calls, short message service (SMS), telemedicine, and, more recently, the use of push notifications. We have continued to explore ways to increase user interaction with mobile apps, one of the pending subjects in the area of mHealth. By analyzing the data produced by subjects during a clinical trial, we were able to extract behavior patterns and, according to them, design effective protocols in weight loss programs. OBJECTIVE A clinical trial was proposed to (1) evaluate the efficacy of push notifications in an intervention aimed at improving the body composition of adult women who are overweight or obese, through a dietary procedure, and (2) analyze the evolution of body composition based on push notifications and prescribed physical activity (PA). METHODS A two-arm randomized controlled trial was carried out. A sample size of 117 adult obese women attended a face-to-face, 30-minute consultation once a week for 6 months. All patients were supplied with an app designed for this study and a pedometer. The control group did not have access to functionalities related to the self-monitoring of weight at home, gamification, or prescription of PA. The intervention group members were assigned objectives to achieve a degree of compliance with diet and PA through exclusive access to specific functionalities of the app and push notifications. The same diet was prescribed for all patients. Three possible PA scenarios were studied for both the control and intervention groups: light physical activity (LPA), moderate physical activity (MPA), and intense physical activity (IPA). For the analysis of three or more means, the analysis of variance (ANOVA) of repeated means was performed to evaluate the effects of the intervention at baseline and at 3 and 6 months. RESULTS Receiving notifications during the intervention increased body fat loss (mean -12.9% [SD 6.7] in the intervention group vs mean -7.0% [SD 5.7] in the control group; P<.001) and helped to maintain muscle mass (mean -0.8% [SD 4.5] in the intervention group vs mean -3.2% [SD 2.8] in the control group; P<.018). These variations between groups led to a nonsignificant difference in weight loss (mean -7.9 kg [SD 3.9] in the intervention group vs mean -7.1 kg [SD 3.4] in the control group; P>.05). CONCLUSIONS Push notifications have proven effective in the proposed weight loss program, leading women who received them to achieve greater loss of fat mass and a maintenance or increase of muscle mass, specifically among those who followed a program of IPA. Future interventions should include a longer evaluation period; the impact of different message contents, as well as message delivery times and frequency, should also be researched. CLINICALTRIAL ClinicalTrials.gov NCT03911583; https://www.clinicaltrials.gov/ct2/show/NCT03911583

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