@article {11551,
	title = {High-intensity Interval Training Frequency: Cardiometabolic Effects and Quality of Life.},
	journal = {Int J Sports Med},
	volume = {39},
	year = {2018},
	month = {2018 Feb},
	pages = {210-217},
	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{\textpm}2.6 yrs, VOpeak: 32.7{\textpm}7.4 ml{\textperiodcentered}: kg {\textperiodcentered}: min). Participants were randomly assigned to a control (CON) and two training groups, which performed 10{\texttimes}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 VOpeak (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, p=0.001, HIIT-3: 9.3 cm, 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.},
	keywords = {Adult, Blood Glucose, Body Fat Distribution, Body Mass Index, Body Weight, Cardiorespiratory Fitness, Cholesterol, Cholesterol, LDL, Female, High-Intensity Interval Training, Humans, Insulin, Male, Oxygen consumption, Quality of Life, Time Factors, Waist Circumference},
	issn = {1439-3964},
	doi = {10.1055/s-0043-125074},
	author = {Stavrinou, Pinelopi S and Bogdanis, Gregory C and Giannaki, Christoforos D and Terzis, Gerasimos and Hadjicharalambous, Marios}
}
