PURPOSE: We investigate the effects of 12-week interval training of moderate- or high-intensity exercise on blood lipids and plasma levels of adiponectin. METHODS:Thirty-four obese adolescent females [age = 15.9 ± 0.3 years; BMI and BMI-Z-score = 30.8 ± 1.6 kg/m(2) and 3 ± 0.3, respectively], were randomized to high-intensity interval training (HIIT, n = 11), moderate-intensity interval training (MIIT, n = 11), or a control group (CG, n = 12). Maximal oxygen uptake ([Formula: see text]), maximal aerobic speed (MAS), plasma lipids and adiponectin levels were measured in all subjects before and after training. RESULTS: Following the training program, in both training groups, body mass, BMI-Z-score, and percentage body fat (% BF) decreased, while [Formula: see text] and MAS increased. Low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and adiponectin levels were positively altered (-12.6 and -7.4 %; 6.3 and 8.0 %; 35.8 and 16.2 %; high to moderate training program, respectively). Waist circumference, triglyceride and total cholesterol decreased only in HIIT group (-3.5; -5.3 and -7.0 %, respectively, in all P < 0.05). Significant decrease in the usual index of insulin resistance (HOMA-IR) occurred in HIIT and MIIT groups (-29.2 ± 5.3 and -18.4 ± 8.6 %, respectively; P < 0.01). CONCLUSION: The results show that HIIT positively changes blood lipids and adiponectin variables in obese adolescent girls, resulting in improved insulin sensitivity, as attested by a lower HOMA-IR, and achieving better results compared to moderate-intensity exercise.
RCT Entities:
PURPOSE: We investigate the effects of 12-week interval training of moderate- or high-intensity exercise on blood lipids and plasma levels of adiponectin. METHODS: Thirty-four obese adolescent females [age = 15.9 ± 0.3 years; BMI and BMI-Z-score = 30.8 ± 1.6 kg/m(2) and 3 ± 0.3, respectively], were randomized to high-intensity interval training (HIIT, n = 11), moderate-intensity interval training (MIIT, n = 11), or a control group (CG, n = 12). Maximal oxygen uptake ([Formula: see text]), maximal aerobic speed (MAS), plasma lipids and adiponectin levels were measured in all subjects before and after training. RESULTS: Following the training program, in both training groups, body mass, BMI-Z-score, and percentage body fat (% BF) decreased, while [Formula: see text] and MAS increased. Low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and adiponectin levels were positively altered (-12.6 and -7.4 %; 6.3 and 8.0 %; 35.8 and 16.2 %; high to moderate training program, respectively). Waist circumference, triglyceride and total cholesterol decreased only in HIIT group (-3.5; -5.3 and -7.0 %, respectively, in all P < 0.05). Significant decrease in the usual index of insulin resistance (HOMA-IR) occurred in HIIT and MIIT groups (-29.2 ± 5.3 and -18.4 ± 8.6 %, respectively; P < 0.01). CONCLUSION: The results show that HIIT positively changes blood lipids and adiponectin variables in obese adolescent girls, resulting in improved insulin sensitivity, as attested by a lower HOMA-IR, and achieving better results compared to moderate-intensity exercise.
Authors: M Chtara; K Chamari; M Chaouachi; A Chaouachi; D Koubaa; Y Feki; G P Millet; M Amri Journal: Br J Sports Med Date: 2005-08 Impact factor: 13.800
Authors: Melissa A Linden; Justin A Fletcher; E Matthew Morris; Grace M Meers; M Harold Laughlin; Frank W Booth; James R Sowers; Jamal A Ibdah; John P Thyfault; R Scott Rector Journal: Med Sci Sports Exerc Date: 2015-03 Impact factor: 5.411
Authors: Ricardo Borges Viana; Claudio Andre Barbosa de Lira; João Pedro Araújo Naves; Victor Silveira Coswig; Fabrício Boscolo Del Vecchio; Rodrigo Ramirez-Campillo; Carlos Alexandre Vieira; Paulo Gentil Journal: Sports Med Date: 2018-09 Impact factor: 11.136
Authors: Katrin A Dias; Charlotte B Ingul; Arnt E Tjønna; Shelley E Keating; Sjaan R Gomersall; Turid Follestad; Mansoureh S Hosseini; Siri M Hollekim-Strand; Torstein B Ro; Margrete Haram; Else Marie Huuse; Peter S W Davies; Peter A Cain; Gary M Leong; Jeff S Coombes Journal: Sports Med Date: 2018-03 Impact factor: 11.136