Effects and dose–response relationship of high-intensity interval training on cardiorespiratory fitness in overweight and obese adults: a systematic review and meta-analysis

Kangle Wang, Yuxin Zhu, Stephen Heung Sang Wong, Yajun Chen, Parco Ming Fai Siu, Julien S. Baker, Fenghua Sun*

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    Abstract

    This study aims to quantify the effects of high-intensity interval training (HIIT) on cardiorespiratory fitness (CRF) by considering potential moderators and to characterise dose–response relationships of HIIT variables that could maximise CRF improvements in overweight and obese adults. Following a comprehensive search through four electronic databases, 19 studies met eligibility criteria. Random-effects models were applied to weight all included studies and to compute the weighted mean standardised mean differences (SMDwm). Meta-analysis showed that HIIT was a highly effective approach for improving CRF in overweight and obese adults (SMDwm = 1.13). Effects were modified by sex and baseline CRF level. Dose–response relationship analysis provided some preliminary data regarding the training period, training intensity, and session duration. However, it is still not possible to provide accurate recommendations currently. Further studies are still needed to identify the most appropriate training variables to prescribe effective HIIT programmes for improving CRF in overweight and obese adults.

    Original languageEnglish
    Pages (from-to)2829-2846
    Number of pages18
    JournalJournal of Sports Sciences
    Volume39
    Issue number24
    Early online date17 Aug 2021
    DOIs
    Publication statusPublished - 17 Dec 2021

    Scopus Subject Areas

    • Orthopedics and Sports Medicine
    • Physical Therapy, Sports Therapy and Rehabilitation

    User-Defined Keywords

    • adult obesity
    • dose–response relationship
    • Intermittent training
    • physical fitness

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