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Table 3 Diaphragm strip physiological parameters

From: Myosin heavy chain and physiological adaptation of the rat diaphragm in elastase-induced emphysema

Source Time to peak tension (ms) Half relaxation time (ms) Peak twitch force (kg/cm2) Fatigue
Control (n = 9) 53.9 ± 2.4 92.3 ± 3.5 0.85 ± 0.055 0.45 ± 0.04
Emphysema (n = 9) 63.9 ± 2.7* 85.3 ± 5.3 0.81 ± 0.053 0.59 ± 0.04*
  1. Half relaxation time is the time from the peak to one-half of the maximum generated force; fatigue is the ratio of force generated at 4 s after the initiation of protocol to the initial force generated. *P ≤ 0.05 versus control values.