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Table 3 Spirometry parameters in the Pre-test and Post-test

From: The effects of peppermint on exercise performance

Parameter Pre-test (n = 12) Post-test (n = 12) Changes% T P value Effect size
FVC (L) 4.57 ± 0.90 4.79 ± 0.84 4.8 6.336 p < 0.001 0.258
PEF (L/s) 8.50 ± 0.94 8.87 ± 0.92 4.35 3.446 p < 0.01 0.401
PIF (L/s) 5.71 ± 1.16 6.58 ± 1.08 15.1 4.505 p < 0.005 0.776
  1. Data are expressed as mean ± SD.