Chronic Inflammation and Neutrophil Activation as Possible Causes of Joint Diseases in Ballet Dancers

Table 2

Effects of a classical ballet class on neutrophil numbers, membrane integrity, externalization of phosphatidylserine and mitochondrial depolarization before, immediately after and 18 hours after a ballet class.

Neutrophils	Before	After	18 hours after
Number of Neutrophils (×10^6)	41.83±8.89	48.5±19.72	26.66±8.38
Cell Membrane Integrity (mean)	63.95±14.21	53.92±15.07	53.70±14.32
Externalization of Phosphatidylserine (mean)	11.14±3.30	9.77±4.31	6.17±2.58
Mitochondrial Depolarization (mean)	114.94±11.31	121.50±11.69	155.23±31.62

The values are presented as the means ± standard errors of 13 dancers. *𝑃<0.05 for comparison to pre-class conditions.