BACKGROUND The scientific interest in high-intensity interval training (HIIT) has greatly increased during recent years. OBJECTIVE The objective of this meta-analysis was to determine the effectiveness of HIIT interventions on cardio-metabolic risk factors and aerobic capacity in overweight and obese youth, in comparison with other forms of exercise. DATA SOURCES A computerized search was m...

Swimming in different high intensities and intervals (HIIT) is a type of exercise that can provide several improvements for swimming training. The aim of this review is to find out if HIIT swimming training is safe and beneficial for young swimmers. 43 studies from different HIIT’s parameters were used to create this review. To be more specific, studies were used on HIIT’s effects in human phys...

Neutrophils and monocytes are key components of the innate immune system that undergo age-associated declines in function. This study compared the impact of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on immune function in sedentary adults. Twenty-seven (43 ± 11 years) healthy sedentary adults were randomized into ten weeks of either a HIIT (>90% ma...

BACKGROUND/AIM Cardiorespiratory fitness (CRF) is a strong determinant of morbidity and mortality. In athletes and the general population, it is established that high-intensity interval training (HIIT) is superior to moderate-intensity continuous training (MICT) in improving CRF. This is a systematic review and meta-analysis to quantify the efficacy and safety of HIIT compared to MICT in indivi...

NB. The HIIT Technical Reports series is intended for rapid dissemination of results produced by the HIIT researchers. Therefore, some of the results may also be later published as scientific articles elsewhere.

Although moderate-intensity continuous training (MICT) has been the traditional model for aerobic exercise training for over four decades, a growing body of literature has demonstrated equal if not greater improvement in aerobic capacity and similar beneficial effects on body composition, glucose metabolism, blood pressure, and quality of life from high-intensity interval training (HIIT). An ad...