Judul: Intervensi air putih dan High Intensity Interval Training (HIIT) terhadap perubahan Indeks Massa Tubuh (IMT) dan indeks kebugaran kardiovaskular remaja overweight
Abstrak: Prevalence of overweight was increased in Indonesia according to Ministry of Health (2013) showed that the overweight on person who have ages in arrange 16-18 years was 7.30%; 19 years was 8.30%; 20-24 years was 13.20%. Efforts to weight loss can be done with a combination of diet, physical activity, and changes in lifestyle (Manore 2012). Plain water had possibility of being the ideal target for the purpose to lose weight (Tate et al. 2012). The American College of Sports Medicine was recommended that HIIT (High Intensity Interval Training) was physical exercise exactly combined with others diet (Kravitz 2014). A combination of research combining diet and physical exercise namely the intervention of plain water intake (PWI) and High Intensity Interval Training (HIIT) to achieve change body mass index and the cardiorespiratoty fitness index of overweight students are rare. The objectives are to analyse the influence of the intervention of plain water intake (PWI) and High Intensity Interval Training (HIIT) on changes in Body Mass Index (BMI) and the Cardiorespiratory Fitness Index (CFI) of overweight students. A special purpose among others identified the habit of eating and drinking, food consumption, as well as food consumption level of subject; identified the habit of sports, the level of physical activity, sleeping patterns, and the level of stress subject; analyse the influence of PWI, HIIT and a combination of both on changes in body weight; analyse the influence of PWI, HIIT, and a combination of both on changes in Body Mass Index (BMI); analyse the influence of PWI, HIIT and a combination of both on changes in cardiorespiratory fitness index (CFI). A design was pre-post experimental study with three groups, namely; (1) plain water intake group (PWI) was nine subjects, (2) High Intensity Interval Training (HIIT) was ten subjects, (3) a combination of plain water intake and High Intensity Interval Training (PWI & HIIT) was ten subjects.The criterias inclusion are aged 17-23 years (purposive) , having BMI ≥ 23 kg/m2), not in the state of running other diet, healthty, not smoking, and willing to follow every stage of intervention.Whereas, criterias exclusion which is undergoing a diet of another, was consuming a drug or a supplement weight loss. The study lasted for two months, the subject of consuming plain water as many as 600 mls one hour before meals (breakfast, lunch, and dinner). Subjects were doing as many as three times per week HIIT (Monday, Wednesday, and Friday) with the duration of 16 minutes, consist of warming up, HIIT workout, and colling down. According to baseline data, more than half of subjects in study (58.62%) had breakfast also not different between three groups (p>0.05). Among 65.52% do not have a drink before dinner, an average on the distance between drink to meals was 5 minutes, the habit of drinking while meals (34.48%) and the amount of plain water that consumed is around 240 mls for 94.40 % subject, also not different on all of variables between three groups (p>0.05). To scatter a habitually drinks water prior to exercise some 48.30% and the number of plain water consumed
Keyword: Plain Water Intake, Overweight Student, High Intensity Interval Training, Cardiovaskular Fitness Index, Body Mass Index