Table 2.

Average dynamics measurements for isolated muscles

	Peak Tension Time From Onset, ms	Peak Rate Relaxation Time From Offset,ms	Half-Relaxation Time From Offset, ms	Half-Relaxation Time From Peak Tension, ms	Relaxation Time Constant, ms
Twitch	13.8 ± 3.9	25.8 ± 6.6	29.4 ± 8.0	16.2 ± 4.2	14.9 ± 5.1
Tetanus	300	27.5 ± 6.6	34.0 ± 7.9		18.0 ± 4.2
Twitch, Close and Luff (1974)	4.4 ± 0.4	—	8.9	4.8 ± 0.5	—

Values are means ± SD for 8 isolated muscles. No SD is given for the time of peak tension for tetanus because it is defined as the stimulus duration (300 ms). No SD is given for the Close and Luff half-relaxation time from offset because it is calculated from their mean time to peak, t_1/2 from peak, and stimulus duration (0.3 ms).