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Mean (±SD) maximum depth with depth of compressed chest post-inadequate recoil at 1Gz, 0.38Gz and μG. (A) The 2005 ECC guidelines. (B) The 2010 ECC guidelines. The dashed line(s) depicts the effective limit(s) of depth for each respective guideline. n = 30; asterisk denotes significant difference in maximum depth to 1Gz control, p < 0.05. The plus sign denotes significant difference in recoil to 1Gz control, p < 0.05.
