subject_No	forward_backward	side_side	Age_Group
1	19	14	elderly
2	30	41	elderly
3	20	18	elderly
4	19	11	elderly
5	29	16	elderly
6	25	24	elderly
7	21	18	elderly
8	24	21	elderly
9	50	37	elderly
1	25	17	young
2	21	10	young
3	17	16	young
4	15	22	young
5	14	12	young
6	14	14	young
7	22	12	young
8	17	18	young