1st Author Year Ref | Type of study subjects | Outcome | Was a statistically significant difference between groups observed? | Time of assessment | Quality classification |
---|---|---|---|---|---|
Dishman 2008 [18] | Healthy | MEP amplitudes | Yes (p < 0.05) Statistically significant increase at 10 s. post-SM compared to control | Immediately after (each 10 s. during 100 s. after SM or control) | Low |
Haavik 2010a [26] | “Subclinical neck/spinal pain” | P14-N18 SEP peak ratio | No | Unclear (said to be within 25 min post-SM or control) | Medium |
N20-P25 SEP peak ratio | No | ||||
P22-N30 SEP peak ratio | Yes (p = .003) Statistically significant decrease post-SM compared to control | ||||
Haavik 2016 [24] | MEP amplitudes | Yes (p = .01) Statistically significant increase post-SM compared to control | Not-reported | Low | |
k (slope of the steepest part of the curve) | No | ||||
S50 (stimulus intensity to obtain a response 50% of the maximum) | No | ||||
Christiansen 2018 [28] | V-wave amplitudes | Yes (p < 0.01–0.03) Statistically significant increase at each time point post-SM compared to control | -Immediately after −30 min after − 60 min after | Acceptable |