Table 2.
Summary of the details of the stimulation procedure used within each study.
| Desmeules et al., 2014 | Krafft et al., 2017 | Lim et al., 2012 | Biurrun Manresa et al., 2013 | Rhudy et al., 2013 | Rice et al., 2017 | Smith et al., 2014 | Sterling et al., 2010 | Umeda et al., 2013 | |
|---|---|---|---|---|---|---|---|---|---|
| Chronic Pain Pathology | Fibromyalgia | Back Pain | Lateral Epicondylalgia | Neck and low back pain | Fibromyalgia Rheumatoid Arthritis |
Fibromyalgia | Whiplash | Whiplash | Fibromyalgia |
| Sample Size | Fibromyalgia, N=137 Control, N=99 |
Back Pain, N=33 Control, N=15 |
Elbow Pain, N=38 Control, N=38 |
Neck Pain, N=40 Back Pain, N=24 Chronic Pain, N=40 Control, N=300 |
Fibromyalgia, N=17 Rheumatoid, N=17, Control, N=19 |
Fibromyalgia, N=26 Control, N=26 |
Whiplash, N=23 Control, N=30 |
Whiplash (mild), N=20 Whiplash (moderate), N=17 Control, N=22 |
Fibromyalgia, N=8 Control, N=13 |
| Pulse duration (ms) | 0.5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of pulse(s) | Single pulse | Train of 5 pulses | Train of 10 pulses | Train of 5 pulses | Not reported | Train of 5 pulses | Train of 5 pulses | Train of 5 pulses | Train of 5 pulses |
| Inter-pulse duration (ms) | Not reported | 4 | 2 | Delivered at 200 Hz | Not reported | 3 | 5 | 5 | 3 |
| Interstimulus interval(s) | Randomly between 6-10 | Randomly between 8-12 | Randomly between 4-8 | Randomly between 8-12 | Randomly between 8-12 | Randomly between 8-12 | Random | Randomly between 4-8 | Randomly between 5-10 |
| Total stimulus duration (ms) | 0.5 | 21 | Not reported | Not reported | Not reported | 17 | 25 | 25 | Not reported |
| Max Stimulus intensity (mA) | 100 | Not reported | Not reported | Not reported | 50 | Not reported | Not reported | Not reported | 40 |
| Increments | Not reported | 0.5 mA steps | 2 mA increments | 0.5 mA steps | 3 ascending /descending steps, 2mA then 1mA | Staircase up and down 4-2-1mA | 2 mA increments | 2 mA increments | Staircase up and down 4-2-1mA |