Table 1. Ranking of the pulsed electric field parameters’ effects on collagen increase three weeks after pulsed electric field application, according to Taguchi analysis.

Level	Voltage <S/N> 3weeks	Pulse Length (us) <S/N> 3 weeks	Number of pulses <S/N> 3 weeks
1	11	15	18
2	14	11	14
3	15	18	13
4	19	12	16
5	18	20	15
Δ	8	9	5
Rank	2	1	3