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December 1, 2019BMJ Open Sport & Exercise MedicineOpen Access

HIIT is not superior to MICT in altering blood lipids: a systematic review and meta-analysis

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Why the study?

To compare the effects of MICT and HIIT on adult lipid profiles and identify characteristics determining exercise-induced changes in TC, TRG, HDL-C, and LDL-C.

Does high intensity interval training (HIIT) improve lipid profiles compared to moderate intensity continuous training (MICT) in healthy adults?

Comparison

HIIT vs MICT

Design

Systematic review and meta-analysis

Authors

GWGina WoodCurtin UniversityAMAnna MurrellUniversity of New EnglandTTTom van der TouwUniversity of New England

Discussion

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Implication

HIIT may be considered over MICT for modest HDL-C gains in healthy adults; confirms equivalent effects on TC, LDL-C, and triglycerides.

Structured PICO

Does high intensity interval training (HIIT) improve lipid profiles compared to moderate intensity continuous training (MICT) in healthy adults?

P
Population
823 healthy adults (≥18 years) from 29 randomised controlled trials. Key exclusions: subjects with chronic disease, pregnant/lactating, in elite athletic training, and studies with a dietary or pharmaceutical intervention component.
I
Intervention
High intensity interval training (HIIT) for ≥4 weeks
C
Comparator
Moderate intensity continuous training (MICT) for ≥4 weeks
O
Outcome
Exercise-induced change in total cholesterol (TC), triglycerides (TRG), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C)surrogate

HIIT and MICT have similar effects on most lipid parameters in healthy adults, though HIIT provides a slightly greater increase in HDL-C.

Cite This Study

Wood et al. (2019) studied this question.

synapsesocial.com/papers/6a101114fb2817e31dfcea01https://doi.org/10.1136/bmjsem-2019-000647
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Effects of self-paced interval and continuous training on health markers in women2017 · 44 citations
  2. 2Effects of High-Intensity Interval Training on Aerobic Capacity in Cardiac Patients: A Systematic Review with Meta-Analysis2017 · 86 citations
  3. 3Response of blood lipids to exercise training alone or combined with dietary intervention2001 · 663 citations
  4. 4Enjoyment for High-Intensity Interval Exercise Increases during the First Six Weeks of Training: Implications for Promoting Exercise Adherence in Sedentary Adults2016 · 112 citations