BS	Bariatric surgery.
ERAS	Enhanced recovery after surgery.
6MWT	Six-minute walking test.
VO2 max	Maximal oxygen uptake.
GRADE	Grading of recommendations assessment, development, and evaluation.
SMD	Standard mean differences.
CORE	Core muscles of the body.
BMI	Body mass index.
OSQOL	Obesity Specific Quality of life.
HRR	Heart rate reserve.
WRQOL	Weight-Related Quality of Life.
SF 36	Health-related quality of life questionnaire.
FM%	Fat mass in percent.
FFM Kg	Fat free mass in kilograms.
CI	Confidence interval.
RCTs	Randomized control trials