Figure 4: Treatment of human keratinocytes with ESWT causes dose- and frequency- dependent changes in metabolic activity of the treated cells 3 days after the treatment. Results are presented as summary of the experiments conducted using various treatment parameters (25, 50 and 100 impulses at 1, 3 and 5 Hz) at same distance from the shockwave generator 5 (A), 6 (B) and 7cm (C). All the results are presented as mean of 3 independent experiments +/-SD.