Nível de atividade física, tempo sedentário e reganho ponderal em pacientes submetidos à cirurgia bariátrica sem acompanhamento em serviços especializados de saúde: um estudo transversal

Abstract

The relationship between low levels of physical activity (PA) and increase of time of sedentary behavior with poorer health outcomes has been suggested. We compared physical activity (PA) levels and sedentary time (ST) between post-bariatric patients without medical follow-up at their first appointment, with low vs. high weight regain. Moreover, correlations between self-reported vs. objective measures in moderate-to-vigorous PA (MVPA) and ST were tested. A prospective cohort of 90 patients after Roux-en-Y gastric bypass (RYGB; n=76) or Sleeve gastrectomy (SG; n=14), aged 42±8 years, body mass index (BMI) 32.9±6.6 kg/m2, was allocated into two groups according to time since surgery < or ≥5 years (G5- or G5+), and assigned into low or high rate of weight regain (RWR<20% or ≥20%, respectively). They were also stratified according to PA level < or ≥5000 steps/day (G1 or G2, respectively). PA and ST were measured by International PA Questionnaire (IPAQ) and ActiGraph GT3X+ accelerometer. PA and ST were similar between groups/G5- (P≥0.13). MVPA time (P=0.04), number of steps/day (P=0.005), % of patients somewhat active (P=0.007), and patients with 30–60 min/day of MVPA (P=0.02) were higher in RWR≥20%, while those with <30 min/d of MVPA (P=0.004) were in the RWR≥20% vs. <20/G5+. MVPA and ST self-reported vs. objective measures were correlated (P<0.001). Nevertheless, there was no concordance between these measures (P>0.05). Low level of PA and longer ST occurred more in RWR≥20%, especially with time since surgery ≥5 years. There was no concordance between IPAQ and accelerometer measures, but a high linear correlation was noted