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Effects Of High-Intensity Interval Training Versus Moderate-Intensity Continuous Training On Cardiorespiratory Fitness, Body Composition, And Psychological Well-Being In Sedentary Young Adults: A Randomized Controlled Trial

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  • Rajapov G'olibbek Oripovich

    (University of Economy and Pedagogy)

Abstract

Background: Physical inactivity is a leading modifiable risk factor for non-communicable diseases globally. High-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) are both widely prescribed exercise modalities, yet comparative evidence regarding their relative efficacy across cardiorespiratory, morphological, and psychological domains in sedentary young adults remains inconclusive. Objective: This study aimed to compare the effects of an 8-week HIIT protocol against an isocaloric MICT program on maximal oxygen uptake (VO₂max), body composition parameters, and psychological well-being in physically inactive university students. Methods: A randomized controlled trial (RCT) was conducted with 72 sedentary participants (age: 21.4 ± 2.1 years; 38 females, 34 males) randomly assigned to HIIT (n = 24), MICT (n = 24), or a control group (n = 24). Both training groups exercised three sessions per week for eight weeks. VO₂max was assessed via the 20-metre shuttle run test, body composition was evaluated through dual-energy X-ray absorptiometry (DEXA), and psychological well-being was measured using the validated Warwick-Edinburgh Mental Well-Being Scale (WEMWBS). Results: HIIT produced significantly greater improvements in VO₂max (Δ = 5.3 mL·kg⁻¹·min⁻¹, p

Suggested Citation

  • Rajapov G'olibbek Oripovich, . "Effects Of High-Intensity Interval Training Versus Moderate-Intensity Continuous Training On Cardiorespiratory Fitness, Body Composition, And Psychological Well-Being In Sedentary Young Adults: A Randomized Controlled Trial," Synoptic: International Journal of Multidisciplinary Research, Synoptic Publisher, vol. 2(1), pages 31-43.
    • Handle: RePEc:snp:journl:art-1780381549457
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