Table 3.

Comparison of FDI twitch properties recorded using three different techniques

	n	Recording method	Twitch force(mN)	Twitch contraction time(mS)	Half-relaxation time(ms)
Present study	14	IMS	13.8[2.2–27.8]	70.8 ± 5.0	68.8 ± 7.3
			(2.2–72.8)	(32.0–111.3)	(20.0–115.9)
Milner-Brown et al.(1973b)	137	STA	–	–	–
			(1.8–300)	(30–100)	–
Stephens & Usherwood (1977)	67	STA	–	–	–
			(1.0–100)	(32–122)	–
Kossev et al. (1994)	236	STA	17.7 ± 1.3	47.3 ± 0.8	33.9 ± 0.7
			(0.2–105)	(20.0–90.0)	(14.0–75.0)
	200	IMMS	14.9 ± 1.2	63.1 ± 1.0	60.4 ± 1.2
			(1.0–140)	(30–135)	(24.0–130.0)
Elek et al. (1992)	209	IMMS	16.0 ± 1.3	63 ± 1.0	61.0 ± 1.2
			(1–137)	(30–135)	(20–125)

Data are expressed as means ± S.E.M. with the range given in parentheses; non-parametric data (in italics) are expressed as the median, interquartile range (in brackets) and range (in parentheses). Recording methods: IMS, intraneural motor-axon stimulation; STA, spike-triggered averaging; IMMS, intramuscular microstimulation.