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Differences of cultural and physical activity of daily life are found between tribal and non-tribal community in India. Tribal group also called ethnic group of community other than tribal community people call non-tribal people. The present research study was to find out front and rear arm elbow angle and compare them in acceleration phase for tribal and non-tribal school boys. Total 120 tribal and non-tribal school boys were selected as subject. The subject was divided the age groups i.e., 10-11 yrs., 12-13 yrs. and 14-15 yrs. each age group consists 20 tribal and 20 non-tribal boys. The videography was done during 100 m sprinting. The front and rear arm elbow angle analyzed from video graphic movement by Kinovea 0.8.15 Motion analysis software. The average front arm elbow angle of (10-11) yrs., (12-13) yrs. and (14-15) yrs. tribal boys were 77.00 0 , 78.00 0 and 81.60 0 whereas non-tribal boys were 78.85 0 , 81.35 0 and 85.90 0 respectively. The front arm elbow angle in acceleration phase increased with increase of age for both tribal and non-tribal boys and front arm elbow angle increased towards the 90 0 tribal and non-tribal sections. Similarly, the rear arm elbow angle for (10-11) yrs., (12-13) yrs. and (14-15) yrs. tribal boys were 112.25 0 , 105.55 0 and 113.45 0 whereas non-tribal boys were 111.05 0 , 110.10 0 and 108.00 0 respectively. The rear arm elbow angle decreased with increase of age for tribal and non-tribal groups except one tribal group. The rear arm elbow angle was more than the 90 0 and it occur 105.55 0 to 113.45 0 for tribal whereas 108.00 0 to 111.05 0 for non-tribal boys. The difference between tribal and non-tribal school boys for front and rear arm elbow angle was not statistically significant at 0.05 level of significant.

Compression of Elbow Angle between Tribal and Non-Tribal School Boys in Acceleration Phase during 100 Meter Sprinting