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Table 1 The effects of stimulation frequency on maximum isometric tetanus stress (force normalised to muscle cross-sectional area) and work loop power output (power output normalised to muscle mass) in mouse soleus muscle (n = 32 pooled data pre-allocation of preparations to control or caffeine treatment); twitch stress (kN m−2) = 41.9 ± 3.9

From: The effect of a physiological concentration of caffeine on the endurance of maximally and submaximally stimulated mouse soleus muscle

Stimulation frequency (Hz)

Tetanus stress (kN m−2)*

Max work loop PO (W kg−1)*

40

150 ± 17

16 ± 2

70

188 ± 17

24 ± 2

140

202 ± 11

33 ± 2

  1. Data represented as mean ± SE
  2. * Significant differences between stimulation frequencies