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Isometric twitches and tetani from warm- (red) and cold-acclimated (blue) scup red muscle under identical conditions. Bundles are from the MID position. Stimulus duration for the tetanus is 250 ms. Force levels were normalized to maximum isometric force of each muscle. Note the longer time to reach maximum force and lower twitch tetanus ratio in the warm-acclimated muscle. Inset: force records for tetani shown with a faster time base. Adapted from Swank & Rome (2001).
