Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13063-019-3618-7/MediaObjects/13063_2019_3618_Fig1_HTML.png)
Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT). Information about the selection, recruitment and evaluations carried out in each period. Abbreviations: 6MWT six-minute walk test, BMI body mass index, CG control group, ESS Epworth Sleepiness Scale, FFQ food frequency questionnaire, PSQI Pittsburgh Sleep Quality Index, IWQOL-LITE questionnaire on the Impact of Weight on Quality of Life-lite, WG water group