THE VISUAL REACTION TIME DIFFERENCE BETWEEN UNDERWEIGHT, NORMAL AND OVERWEIGHT BODY MASS INDEX CATEGORIES AMONG STUDENT AT SARASWATI ELEMENTARY SCHOOL TABANAN

Abstract

ABSTRACT
This study was to determine the difference of visual reaction time based on underweight, normal and overweight
body mass index’s categories among student at Saraswati elementary school in Tabanan. This study design is a
cross-sectional analytic study held on March 2017. Samples was selected using total sampling technique with totally
228 samples which divided into 3 groups based from their body mass index. Normality test using Kolmogorov-smirnov
Test and homogeneity test using Levene’s Test had been done (p>0.05). Descriptive analytic show the visual reaction
time in underweight BMI 569,4+50,08 ms, normal BMI 405,31+41,54 ms and overweight BMI 556,75+46,86 ms. Analysis
using One Way ANOVA find out significant mean differences between group (p=0,000) Based on this study, conclude
that underweight and overweight children had a longer visual reaction time than normal weight children in Saraswati
Elementary School Tabanan.
Keywords : Visual Reaction Time, Body Mass Index