HUBUNGAN INDEKS MASSA TUBUH DENGAN KEBUGARAN JASMANI YANG DIUKUR DENGAN HARVARD STEP TEST PADA PELAJAR SEMESTER III SMA METHODIST 1 MEDAN TAHUN 2016
Background : Body Mass Index (BMI) is a simple index of weight-for-height that is normally used to classify overweight and obese. Several studies have documented an increase in overweight or obesity as a serious threat to global public health. The positive relation between body mass index with physical fitness has been noted in several studies, where the risk of poor physical fitness increased in the population of overweight and obesity (BMI ≥ 25 kg / mm2).The aim of this study is to determine the relations between body mass index with physical fitness, measured by the Harvard Step Test.
Methods : This is a correlative analytic research, with a cross sectional study approach. The amount of sample taken, based in Sloin’s formula, is 92 people who constitute the third semester students in Methodist 1 High School Medan. The measurement of body mass index was done using the calibrated SMIC body weight. While physical fitness measurements carried out by the Harvard Step Test using a bench 45cm for men and 43cm women, stopwacth, metronome.
Results : From the research, the most respondents was 16 years (88.4%); 34 female respondents (56.7%) of men 26 people (43.3%); IMT largest age category according to normal by the age of 16 years (30.0%); BMI by sex Most women overweight category (21.7%); PFL found to be very good (1.7%), good (31.7%), sufficient (28.3%), moderate (18.3%) less (20.0%). The results showed a correlation with body mass index, physical fitness, as measured by the Harvard Step Test with pvalue = <0.001 (p <0.05).
Conclusion : Most of the subjects had a good level of physical fitness. The increasing BMI will decrease the physical fitness level.