The effects of training in LIPOXmax zone on body composition in middle-age obese women

Aims. - This study wants to assess the effects of training in the LIPOXmax zone on the anthropometric, impedancemetric and cardiorespiratory parameters in middle-age obese women. Method and material. - Sixty-one obese women (BMI >= 30 kg/m(2)) participated in the individualized training protocol in the LIPOXmax zone (40-50% of measured peak .V O-2) performed on Ergocycle. The protocol spanned three weeks three times a week. Each session lasts 60 mn. Weight, BMI and body composition were assessed before and after training. Cardiorespiratory capacities ([peak . V O-2], HRmax, Energy Expenditure [EE] and Mets), obtained following a maximum effort test (HRmax measured >= 90% predicted value), were evaluated before and after training. Results. - The individualized training protocol in the LIPOXmax zone allowed changes in both weight, BMI, body composition and cardiorespiratory functions. Total weight and BMI decreased significantly (weight 92.97 +/- 15.46 vs. 95.02 +/- 15 kg, P = 0.001) (BMI 37.58 +/- 5.86 vs. 38.66 +/- 5.9 kg/m(2), P = 0.002). There is an insignificant decrease in body fat (42.78 +/- 10.38 vs. 43.98 +/- 10.25 kg, P = 0.08) with a significant loss of visceral fat (from 11.77 +/- 3.37 to 11.36 +/- 3.35; P = 0.005) and a slight decrease in fat-free mass (from 51.56 +/- 5.64 to 50.61 +/- 6.2 kg; P = 0.003). There was a significant improvement in peak . V O-2(16.11 +/- 3.04 vs. 14.40 +/- 4.46 mL/kg/mn, P = 0.001). This protocol can thus be proposed in order to initiate a weight loss in obese subjects. (C) 2020 Elsevier Masson SAS. All rights reserved.