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Muscle Tone and Concentric and Eccentric Isotonic Contractions
  Amplitude (mV) Frequency of Spikes
(number per 0.2 msec sampling period)
Rest Concentric (5 lb) Eccentric (5 lb) Rest Concentric (5 lb) Eccentric (5 lb)
Subject 1 Rest Concentric (5 lb) Eccentric (5 lb) Rest Concentric (5 lb) Eccentric (5 lb)
2 Rest Concentric (5 lb) Eccentric (5 lb) Rest Concentric (5 lb) Eccentric (5 lb)
3 Rest Concentric (5 lb) Eccentric (5 lb) Rest Concentric (5 lb) Eccentric (5 lb)
Isometric Contractions
  Amplitude (mV) Frequency of Spikes
(number per 0.2 msec sampling period)
Load (lb) Load (lb)
0 2 5 10 20 0 2 5 10 20
Subject 1 0 2 5 10 20 0 2 5 10 20
2 0 2 5 10 20 0 2 5 10 20
3 0 2 5 10 20 0 2 5 10 20