Fig. 3

The Borg’s scale during intervention in the Black dot, PG; White dot, CG. To determine differences in the Borg’s scale during intervention between groups, unpaired t-test was applied at each time point during day 1 to 18. Because of lacks of data at day 1, 8, 12, 17 and 18, numbers of data at these days are shown in parentheses. Differences were considered statistically significant at P < 0.05. Statistical evaluations were performed using SPSS (version 24.0; IBM, Chicago, IL). Values are represented as mean (SD) unless otherwise stated. All participants performed rehabilitation for 33 sessions