showed a trendP=0.052
The difference in the strain of l 1 was significant (P=0.028) between group 2 and group 1 and showed a trend toward statistical significance between group 2 and group 3 (P=0.052).
The difference in the strain of l 1 was significant (P=0.028) between group 2 and group 1 and showed a trend toward statistical significance between group 2 and group 3 (P=0.052).