Because the data were non-normally distributed,
non-parametric Wilcoxon Signed Ranks Tests were
used to evaluate differences between each mode of
cryotherapy at an alpha level of P ≤ 0.05. Numbness
was produced significantly faster by both ice massage
(median: 6.5 minutes, interquartile range: 5.0, 11.0)
and cold water immersion (median: 8.5 minutes, interquartile
range: 5.8, 12.3) than through the application
of a crushed ice bag (median: 12.1 minutes, interquartile
range: 8.4, 15.0; see Figure 1). There were no
significant differences between modes of cryotherapy
administration for duration of numbness after removal
of the cold modality, each of which resulted in a return
to the baseline level of skin sensation within 5 minutes.
Because the data were non-normally distributed,non-parametric Wilcoxon Signed Ranks Tests wereused to evaluate differences between each mode ofcryotherapy at an alpha level of P ≤ 0.05. Numbnesswas produced significantly faster by both ice massage(median: 6.5 minutes, interquartile range: 5.0, 11.0)and cold water immersion (median: 8.5 minutes, interquartilerange: 5.8, 12.3) than through the applicationof a crushed ice bag (median: 12.1 minutes, interquartilerange: 8.4, 15.0; see Figure 1). There were nosignificant differences between modes of cryotherapyadministration for duration of numbness after removalof the cold modality, each of which resulted in a returnto the baseline level of skin sensation within 5 minutes.
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