From: The effect of spinal manipulative therapy and home stretching exercises on heart rate variability in patients with persistent or recurrent neck pain: a randomized controlled trial
Number of days of having performed stretching exercises (out of 14)
10
11
12
13
14
Intervention, n (%)
4 (6.3)
0 (0.0)
10 (15.9)
39 (61.9)
Control, n (%)
7 (12.7)
6 (10.9)
36 (65.5)