Resistance training and diastolic myocardial tissue velocities in obese children

Louise Naylor, Katie Watts, J.A. Sharpe, Timothy Jones, Elizabeth Davis, A. Thompson, K. George, J.M. Ramsay, G. O'Driscoll, Daniel Green

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Purpose: The primary purpose of this study was to determine the effects of resistance exercise training on early diastolic myocardial velocities (E') in an obese pediatric population. Methods: Twenty-three obese adolescents were selected to participate in either a resistance-based training program (RT; n = 13,12.2 +/- 0.4 yr, body mass index [BMI] = 32.5 +/- 1.9 kg.m(-2)) or a nonexercise control intervention (n = 10, 13.6 +/- 0.7 yr, BMI = 30.2 +/- 2.6 kg.m(-2)) for 8 wk. All subjects had repeated echocardiographic assessments to determine left ventricular (LV) geometry, early transmitral flow velocity (E), and E'. Results: LV mass and wall thicknesses did not significantly change with training or in controls. RT improved E' (11.9 +/- 0.5 to 13.3 +/- 0.5 cm.s(-1), P <0.01) in the presence of a decrease in E/E' (8.17 +/- 0.39 to 7.06 +/- 0.30 cm.s(-1), P <0.01), a marker of left atrial pressure. No changes were evident in the inactive control subjects. Conclusions: A supervised 8-wk RT exercise program improved early diastolic tissue velocity in obese children, independent of changes in LV morphology.
Original languageEnglish
Pages (from-to)2027-2032
JournalMedicine and Science in Sports and Exercise
Volume40
Issue number12
DOIs
Publication statusPublished - 2008

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