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Keating, Shelley E.; Machan, Elizabeth A.; O'Connor, Helen T.; Gerofi, James A.; Sainsbury, Amanda; Caterson, Ian D.; Johnson, Nathan A.

Continuous Exercise but Not High Intensity Interval Training Improves Fat Distribution in Overweight Adults

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  • Medientyp: E-Artikel
  • Titel: Continuous Exercise but Not High Intensity Interval Training Improves Fat Distribution in Overweight Adults
  • Beteiligte: Keating, Shelley E.; Machan, Elizabeth A.; O'Connor, Helen T.; Gerofi, James A.; Sainsbury, Amanda; Caterson, Ian D.; Johnson, Nathan A.
  • Erschienen: Hindawi Limited, 2014
  • Erschienen in: Journal of Obesity
  • Sprache: Englisch
  • DOI: 10.1155/2014/834865
  • ISSN: 2090-0708; 2090-0716
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:p><jats:italic>Objective</jats:italic>. The purpose of this study was to assess the effect of high intensity interval training (HIIT) versus continuous aerobic exercise training (CONT) or placebo (PLA) on body composition by randomized controlled design.<jats:italic>Methods</jats:italic>. Work capacity and body composition (dual-energy X-ray absorptiometry) were measured before and after 12 weeks of intervention in 38 previously inactive overweight adults.<jats:italic>Results</jats:italic>. There was a significant group × time interaction for change in work capacity (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>P</mml:mi><mml:mo>&lt;</mml:mo><mml:mn>0</mml:mn><mml:mo>.</mml:mo><mml:mn>001</mml:mn></mml:math>), which increased significantly in CONT (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mn>23.8</mml:mn><mml:mo>±</mml:mo><mml:mn>3.0</mml:mn></mml:math>%) and HIIT (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M3"><mml:mn>22.3</mml:mn><mml:mo>±</mml:mo><mml:mn>3.5</mml:mn></mml:math>%) but not PLA (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M4"><mml:mn>3.1</mml:mn><mml:mo>±</mml:mo><mml:mn>5.0</mml:mn></mml:math>%). There was a near-significant main effect for percentage trunk fat, with trunk fat reducing in CONT by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M5"><mml:mn>3.1</mml:mn><mml:mo>±</mml:mo><mml:mn>1.6</mml:mn></mml:math>% and in PLA by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M6"><mml:mn>1.1</mml:mn><mml:mo>±</mml:mo><mml:mn>0.4</mml:mn></mml:math>%, but not in HIIT (increase of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M7"><mml:mn>0.7</mml:mn><mml:mo>±</mml:mo><mml:mn>1.0</mml:mn></mml:math>%) (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M8"><mml:mi>P</mml:mi><mml:mo>=</mml:mo><mml:mn>0</mml:mn><mml:mo>.</mml:mo><mml:mn>07</mml:mn></mml:math>). There was a significant reduction in android fat percentage in CONT (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M9"><mml:mn>2.7</mml:mn><mml:mo>±</mml:mo><mml:mn>1.3</mml:mn></mml:math>%) and PLA (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M10"><mml:mn>1.4</mml:mn><mml:mo>±</mml:mo><mml:mn>0.8</mml:mn></mml:math>%) but not HIIT (increase of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M11"><mml:mn>0.8</mml:mn><mml:mo>±</mml:mo><mml:mn>0.7</mml:mn></mml:math>%) (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M12"><mml:mi>P</mml:mi><mml:mo>=</mml:mo><mml:mn>0</mml:mn><mml:mo>.</mml:mo><mml:mn>04</mml:mn></mml:math>).<jats:italic>Conclusion</jats:italic>. These data suggest that HIIT may be advocated as a time-efficient strategy for eliciting comparable fitness benefits to traditional continuous exercise in inactive, overweight adults. However, in this population HIIT does not confer the same benefit to body fat levels as continuous exercise training.</jats:p>
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