BACKGROUND: It is unclear how different exercise intensities affect cardiovascular disease (CVD) risk factors in obese adolescents. The aim of this study was to compare the effects of high-intensity (HIT) vs. low-intensity (LIT) aerobic training on CVD risk factors in obese adolescents. METHODS:Forty-three obese adolescents (age: 15.7 ± 1.3 years, BMI: 34.3 ± 4.1 kg/m(2)) participated this study either HIT (corresponding to ventilatory threshold I; N = 20) or LIT (20% below ventilatory threshold I; N = 23) for 12 weeks. All sessions were isocaloric (350 kcal). All participants received the same nutritional, psychological, and clinical counseling. Subjects were assessed in fatness, fitness, lipid profile, and glucose at baseline and after 12 weeks. The CVD risk factors assessed were waist circumference (WC), total cholesterol (TC), high-density lipoprotein (HDL), glucose, and fitness, which were single and clustered analyzed (z scores sum). RESULTS:Body mass, Body Mass Index, fatness, and WC were improved (P < .001) in both groups. The sum of z scores (WC + TC + glucose-fitness-HDL) improved in both HIT (12 weeks = -2.16 SD; Cohen's d = .45) and LIT (12 weeks = -2.13 SD; Cohen's d = .60) without groups differences. Changes in fitness were associated with changes in WC (r = -.48; P = .003). CONCLUSION: HIT does not promote any additional improvements in CVD risk factors than LIT in obese adolescents.
RCT Entities:
BACKGROUND: It is unclear how different exercise intensities affect cardiovascular disease (CVD) risk factors in obese adolescents. The aim of this study was to compare the effects of high-intensity (HIT) vs. low-intensity (LIT) aerobic training on CVD risk factors in obese adolescents. METHODS: Forty-three obese adolescents (age: 15.7 ± 1.3 years, BMI: 34.3 ± 4.1 kg/m(2)) participated this study either HIT (corresponding to ventilatory threshold I; N = 20) or LIT (20% below ventilatory threshold I; N = 23) for 12 weeks. All sessions were isocaloric (350 kcal). All participants received the same nutritional, psychological, and clinical counseling. Subjects were assessed in fatness, fitness, lipid profile, and glucose at baseline and after 12 weeks. The CVD risk factors assessed were waist circumference (WC), total cholesterol (TC), high-density lipoprotein (HDL), glucose, and fitness, which were single and clustered analyzed (z scores sum). RESULTS: Body mass, Body Mass Index, fatness, and WC were improved (P < .001) in both groups. The sum of z scores (WC + TC + glucose-fitness-HDL) improved in both HIT (12 weeks = -2.16 SD; Cohen's d = .45) and LIT (12 weeks = -2.13 SD; Cohen's d = .60) without groups differences. Changes in fitness were associated with changes in WC (r = -.48; P = .003). CONCLUSION:HIT does not promote any additional improvements in CVD risk factors than LIT in obese adolescents.
Authors: Jodi D Fitzgerald; Lindsey Johnson; Don G Hire; Walter T Ambrosius; Stephen D Anton; John A Dodson; Anthony P Marsh; Mary M McDermott; Joe R Nocera; Catrine Tudor-Locke; Daniel K White; Veronica Yank; Marco Pahor; Todd M Manini; Thomas W Buford Journal: J Am Heart Assoc Date: 2015-02-18 Impact factor: 5.501
Authors: Neal Malik; Wagner L Prado; Sara Lappan; Mihaela Popescu; Bryan Haddock; James O Hill Journal: Int J Environ Res Public Health Date: 2022-04-02 Impact factor: 3.390
Authors: Marit Salus; Vallo Tillmann; Liina Remmel; Eve Unt; Evelin Mäestu; Ülle Parm; Agnes Mägi; Maie Tali; Jaak Jürimäe Journal: Int J Environ Res Public Health Date: 2022-10-03 Impact factor: 4.614