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. 2017 Jan 1;34(1):38–49. doi: 10.1089/neu.2015.4308

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Copyright 2016, Mary Ann Liebert, Inc.

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FIG. 2. — Graphs of the mean number of impacts greater than the peak resultant linear acceleration (PRLA) (A) or peak resultant rotational acceleration (PRRA) (B) threshold for college football (CF), high school football (HF), college lacrosse (CL), and college soccer (CS) practices. Vertical lines identify the 95% CI for the mean number of impacts per practice greater than threshold. Graphs show the ratio of means for comparing the mean number of impacts greater than the PRLA (C) or PRRA (D) threshold between CF practices and HF, CL, and CS practices. Data points identify the mean impact rate ratio (e.g., HF:CF practices) and vertical lines identify the Bonferroni-corrected 95% CI. Dotted line identifies the line of equality (i.e., ratio equals 1).