As listed in Table 3, the SGF group showed significantly lower hardness and higher values in springiness, cohesiveness, and
resilience than the WWN groups. However, there was a general trend of hardness increase as of WWF reduced from 125-mm to 72-mm; the hardness value of group 72-mm was significantly higher than of 125-mm group. There was no significant difference in springiness among WWN groups; however, group 72-mm showed significantly higher values in cohesiveness and resilience than group 125-mm.