High-intensity Interval Training Frequency: Cardiometabolic Effects and Quality of Life

Pinelopi S. Stavrinou, Gregory C. Bogdanis, Christoforos D. Giannaki, Gerasimos Terzis, Marios Hadjicharalambous

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The effects of high intensity interval training (HIIT) frequency on cardiometabolic health and quality of life were examined in 35 healthy inactive adults (age: 31.7±2.6 yrs, VO 2 peak: 32.7±7.4 ml · kg -1 · min -1). Participants were randomly assigned to a control (CON) and two training groups, which performed 10×60-s cycling at ~83% of peak power, two (HIIT-2) or three times per week (HIIT-3) for eight weeks. Compared with CON, both training regimes resulted in similar improvements in VO 2 peak (HIIT-2: 10.8%, p=0.048, HIIT-3: 13.6%, p=0.017), waist circumference (HIIT-2: -1.4 cm, p=0.048, HIIT-3: -2.4 cm, p=0.028), thigh cross-sectional area (HIIT-2: 11.4 cm 2, p=0.001, HIIT-3: 9.3 cm 2, p=0.001) and the physical health component of quality of life (HIIT-2: 8.4, p=0.001, HIIT-3: 12.2, p=0.001). However, HIIT-3 conferred additional health-related benefits by reducing total body and trunk fat percentage (p<0.05, compared with CON), total cholesterol and low-density lipoprotein-cholesterol (p<0.02, compared with CON) and by improving the mental component of quality of life (p=0.045, compared with CON). In conclusion, performing HIIT only twice per week is effective in promoting cardiometabolic health-related adaptations and quality of life in inactive adults. However, higher HIIT frequency is required for an effect on fat deposits, cholesterol and mental component of well-being.

Original languageEnglish
Pages (from-to)210-217
Number of pages8
JournalInternational Journal of Sports Medicine
Volume39
Issue number3
DOIs
Publication statusPublished - 1 Feb 2018

Keywords

  • abdominal adiposity
  • cholesterol
  • glucose tolerance
  • maximal oxygen uptake
  • randomized control trial

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