Table 1.

Activities of investigators during the trial.

Visit	1 (screening and inclusion)	2 (baseline)	3 (1st follow-up)	4 (2nd follow-up)
Day of the study	−	Day 0	Day 7	Day 14
Injection	−	+	+	−
Measure EMG	−	EMG.I.1.	EMG.I.2.	EMG.I.3.
		EMG.II.1.	EMG.II.2.	EMG.II.3.
		EMG.III.1.	EMG.III.2.	EMG.II.3.
		EMG.I.1.NP	EMG.I.2.NP	EMG.I.3.NP
		EMG.II.1.NP	EMG.II.2.NP	EMG.II.3.NP
		EMG.III.1.NP	EMG.III.2.NP	EMG.II.3.NP
Measure VAS	−	VAS.I.1.	VAS.I.2.	VAS.I.3.
		VAS.II.1.	VAS.II.2.	VAS.II.3.
		VAS.III.1.	VAS.III.2.	VAS.III.3.

EMG.I.1. = EMG, Group I first measurement; NP = no pain.