![]() In contrast, resistance training is known to induce muscle hypertrophy and increase muscle strength and is included in the exercise recommendations (moderate to vigorous strength training ≥ 2 days/week in addition to aerobic exercise) of public health. Traditional HIIT protocols used in obese and overweight individuals, utilise unimodal, aerobic exercise regimens on cycle-ergometers or treadmills and are often criticised as inadequate to improve Lean Body Mass (LBM) and to advance functional performance. A large number of studies compared HIIT to MICT and demonstrated that HIIT has similar effects in health parameters such as body composition, physiological parameters, cardiorespiratory fitness. The last few years High Intensity Interval Training (HIIT) has received extensive attention as a an effective and time-saving exercise modality for overall health. The vast majority of the studies for the management of obesity used MICT. Training programs for weight control, vary on exercise modalities, intensity, duration and frequency. However, lack of time and motivation, financial reasons, fatigue and family responsibilities are often cited as barriers to participation in these exercise programs. Exercise training involving aerobic and resistance exercise, have been used to increase energy expenditure and demonstrated a positive impact in body composition of normal-weight and obese individuals. It was reported in the 2016 Lancet Series of physical activity that the prevalence of inactivity was 23.3% and that women and older individuals have higher levels of inactivity. Despite the physical activity recommendations (at least 150 min of moderate intensity exercise or 75 min of vigorous intensity exercise per week), lack of adequate physical activity remains a worldwide problem. Īmerican College of Sports Medicine (ACSM), suggestsa combination of Moderate Intensity, Aerobic, Continuous Exercise (MICT) and resistance training whenever possible, for the management of obesity. Strategies to decrease the cardiovascular risk factors, to reduce the incidence of these diseases and improve their physical, social and psychological consequences that affect the quality of life is a perpetual goal of health providers. No significant changes were revealed to the biochemical parameters or the strength of the right (dominant) limp.Ĭonclusion: The results of the study suggest that a low-frequency, circuit training program with high intensity lasting only for 18-minutes twice a week is the minimum required dose in reducing at least some of the cardiovascular risk factors, in obese and overweight population.Ĭircuit training, Cardiovascular health, Risk factors, Obese, Overweight, High-intensity trainingĮxcessive weight gain and obesity are a global public health problem, associated with an increase of several cardiovascular risk factors and the prevalence of non-communicable diseases such as metabolic diseases, certain types of cancer, depression, sleep disturbances and all-cause mortality. Body composition, blood markers and physiological variables, cardiorespiratory fitness and isometric strength were measured at baseline and post-intervention.įindings: Significant and meaningful improvements were demonstrated in cardiorespiratory fitness, several body composition variables, isometric strength of the left (non-dominant) lower limb and several physiological variables. Approximately 12 repetitions were performed per station. The program consisted of 2 circuits of 6 exercise stations of 1min at 50-60% of Heart Rate Reserve (HRR) which progressed to 70-85% of HRR after the first two weeks, alternating with 1min active rest at 40-50% of HRR which progressed to 50-60% of HRR. ![]() Participants in the HICT-group trained for 36-minutes, twice a week (18-minutes per session) for 8 weeks in total. ![]() ![]() A total of 30 participants were randomly allocated to HICT-group (n = 15) or to a no exercise control-group (n = 15). Methods: The trial was prospectively registered with Cyprus National Bioethics Committee ΕΕΒΚ/ΕΠ/2017/38 29 th October 2017. ![]() The purpose of this study is to investigate the effects of a minimal dose, High-Intensity Circuit Training (HICT) program on a range of cardiovascular risk factors in obese and overweight individuals. Background: Obesity is a serious risk for various cardiovascular diseases and is often managed with increased physical activity and exercise. ![]()
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