Effects of linear periodization of combined training on quality of life of adults with obesity: a blind randomized controlled trial

Abstract

This study aimed to compare the effect of 16-weeks of combining aerobic and strength training with a linear increase or fixed intensity on the health-related quality of life (HRQoL) of obese adults. This single-blinded clinical trial involved adults with obesity (BMI ≥ 30 kg/m2), randomized into control (CG), fixed intensity (FG), or linear increase (LG) groups. The FG and LG performed 16 weeks of combined (aerobic + strength) training for 60 min, three times a week. The FG performed aerobic exercises between 50 and 59% of the heart rate reserve (HRres) and strength at 10–12 maximum repetitions (RM). The LG started with 40–49% of HRres and 12–14 RM and progressively increased the intensity (50–59% and 10–12 RM; 60–69% and 8–10 RM). The HRQoL was assessed using the SF-36 questionnaire. Generalized estimation equations and mean differences (∆) were used. Of the 69 participants (23 per group), 36 completed the intervention (CG = 13, FG = 9, and LG = 14). A significant difference was observed in the time of the physical function, with superiority in the training groups (CG: ∆ = 1.2 vs. FG and LG, respectively: ∆ = 10.0). The mental health component and mental health domain showed significant differences for the FG (∆ = 30.2 and ∆ = 23.1, respectively). In conclusion, the combined training improved physical functioning. Specifically, fixed-intensity training effectively enhanced mental health indicators.Trial Registration: This study is registered at www.ensaiosclinicos.gov.br/ (No. RBR-3c7rt3), Date of registration: 07/02/2018.

Effect of different periodization models of combined training on the perception of barriers to physical activity in adults with obesity: A randomized clinical trial

“…To keep this population motivated to practice, it is necessary to create a positive and supportive environment, in which the practitioner creates significant bonds (Burgess et al., 2017). This is related to the improvement in mental health, which was previously observed in our sample after the intervention (Tozetto et al., 2022) but which seems not to have influenced the lower perception of barriers.…”

“…This denotes that greater focus is needed on creating a favorable environment for training maintenance for this population. This conclusion was observed for other variables such as health-related quality of life and sleep in this sample Tozetto et al, 2022).…”

“…However, we cannot say that the pain sensation has increased. In fact, in that same sample, Tozetto et al (2022) observed that the groups that trained reduced the sensation of pain after the intervention. Confirming this statement, Wasser et al (2017) identified in their review that several training programs (including aerobic and resistance) are able to reduce body pain in this population after the training period.…”

“…In fact, in that same sample, Tozetto et al. (2022) observed that the groups that trained reduced the sensation of pain after the intervention. Confirming this statement, Wasser et al.…”