[Analysis of clinical relevance applied to 3methods of reducing weight in overweight or obesity followed-up for one year]

Effectiveness of weight management interventions for adults delivered in primary care: systematic review and meta-analysis of randomised controlled trials

OBJECTIVE

To examine the effectiveness of behavioural weight management interventions for adults with obesity delivered in primary care.

DESIGN

Systematic review and meta-analysis of randomised controlled trials.

ELIGIBILITY CRITERIA FOR SELECTION OF STUDIES

Randomised controlled trials of behavioural weight management interventions for adults with a body mass index ≥25 delivered in primary care compared with no treatment, attention control, or minimal intervention and weight change at ≥12 months follow-up.

DATA SOURCES

Trials from a previous systematic review were extracted and the search completed using the Cochrane Central Register of Controlled Trials, Medline, PubMed, and PsychINFO from 1 January 2018 to 19 August 2021.

DATA EXTRACTION AND SYNTHESIS

Two reviewers independently identified eligible studies, extracted data, and assessed risk of bias using the Cochrane risk of bias tool. Meta-analyses were conducted with random effects models, and a pooled mean difference for both weight (kg) and waist circumference (cm) were calculated.

MAIN OUTCOME MEASURES

Primary outcome was weight change from baseline to 12 months. Secondary outcome was weight change from baseline to ≥24 months. Change in waist circumference was assessed at 12 months.

RESULTS

34 trials were included: 14 were additional, from a previous review. 27 trials (n=8000) were included in the primary outcome of weight change at 12 month follow-up. The mean difference between the intervention and comparator groups at 12 months was -2.3 kg (95% confidence interval -3.0 to -1.6 kg, I²=88%, P<0.001), favouring the intervention group. At ≥24 months (13 trials, n=5011) the mean difference in weight change was -1.8 kg (-2.8 to -0.8 kg, I²=88%, P<0.001) favouring the intervention. The mean difference in waist circumference (18 trials, n=5288) was -2.5 cm (-3.2 to -1.8 cm, I²=69%, P<0.001) in favour of the intervention at 12 months.

CONCLUSIONS

Behavioural weight management interventions for adults with obesity delivered in primary care are effective for weight loss and could be offered to members of the public.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42021275529.

[Evaluation of a motivational intervention of physical activity program in the treatment of obesity and overweight]

OBJECTIVE

To analyse the outcomes of a motivational physical activity program for the treatment of obesity.

METHOD

A randomised, controlled, double blind clinical trial with 2 arms, 12 months of follow-up and a 1:1 allocation ratio. The data was collected between July 2017 and July 2018. The patients, of both genders, had to be referred by their occupational medicine doctors with the diagnosis of overweight or obesity and be aged between 20 and 65 years. An analysis was made of the anthropometric measurements, lipid parameters, as well as on the follow-up of the program.

RESULTS

A total of 123 obese or overweight patients participated. Two groups were formed; 61 in intervention group [G1] and 62 in as usual care control group [G2]). As regards the 107 that finished the study (60 in G1 and 47 in G2), the mean age was 45.55±12.83 SD, with 57.2% women and 42.8% men. The number of patients followed-up was much higher in the Physical Activity Program than in the control group, and the number of dropouts (only one) was insignificant. It can be seen how both the weight and the body mass index as the main lipid parameters are reduced in the study group significantly with respect to the control group. The physical activity of the group in the motivated physical activity program is three times higher than in the group without intervention. There was a significant relationship between the increase in activity and weight reduction (P<.001), also between the reduction in weight and the reduction in cholesterol and triglycerides.

CONCLUSIONS

In our study, a motivational physical activity program leads to more follow-up and therefore improves the anthropometric and lipid parameters.

Effect of a motivational physical activity program on lipid parameters in patients with obesity and overweight

OBJECTIVE

To assess the effect of a motivated physical activity program on the lipid parameters most related to excess weight (triglycerides [TG], and high density lipoprotein cholesterol [HDL]) in a weight-loss intervention in obese and overweight patients.

METHODS

A randomised and controlled, 2-arm, clinical trial and a 12-months follow-up was conducted. The patients included in the study were randomised into 2 intervention groups: Motivational intervention of obesity with a previously trained nurse (G1), motivational group, with digital platform support and motivated physical activity program (iwopi [G2]). The anthropometric variables measured were height, weight, Body Mass Index (BMI), as well as the analytical variables, total cholesterol, TG and HDL-C.

RESULTS

A total of 123 patients participated in the study, of which 61 were randomised to G1, and 62 to G2. Both groups significantly decreased weight at the end of the study, with the decrease in G1 being 4.898kg, and 6.292kg in G2. In both groups there was also a significantly decrease (P<.05) in total cholesterol and TG, and increase in HDL cholesterol, with these changes being more intense in the G2 group, as well as being the group that lost more weight.

CONCLUSIONS

Weight reduction is accompanied by favourable changes in lipid parameters related to overweight and obesity, being more intense the greater the weight loss.