In contrast , significant differences were recorded in the use of technique Tn2 with the left punch since this was used more by the senior competitors .
This technique with right punch was used significantly more by 12 - 13 age group than senior competitors .
Significant differences were recorded in the use of technique Tn2 with the left punch since this was used more by the senior competitors .
This technique with right punch was used significantly more by 12 - 13 age group than senior competitors .