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A total of 16 middle school football players, 107 high school football players, and 65 high school female soccer players participated. Players were separated into levels of play: middle school (MS), freshman (FR), junior varsity (JV), junior varsity-varsity (JV-V), and varsity (V). xPatch sensors were used to measure peak translational and angular accelerations (PTA and PAA, respectively) for each head acceleration event (HAE) during practice and game sessions. Data were analyzed using a custom MATLAB program to compare metrics that have been correlated with functional neurological changes: session metrics (median HAEs per contact session), season metrics (total HAEs, cumulative PTA\/PAA), and regressions (cumulative PTA\/PAA versus total HAEs, total HAEs versus median HAEs per contact session). Football players had greater session (\n                    <jats:italic toggle=\"yes\">p<\/jats:italic>\n                    &lt;.001) and season (\n                    <jats:italic toggle=\"yes\">p<\/jats:italic>\n                    &lt;.001) metrics than soccer players, but soccer players had a significantly greater player average PAA per HAE than football players (\n                    <jats:italic toggle=\"yes\">p<\/jats:italic>\n                    &lt;.001). Middle school football players had similar session and season metrics to high school level athletes. In conclusion, sport has a greater influence on HAE characteristics than level of play.\n                  <\/jats:p>","DOI":"10.1177\/0954411920970812","type":"journal-article","created":{"date-parts":[[2020,11,13]],"date-time":"2020-11-13T04:34:47Z","timestamp":1605242087000},"page":"208-221","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":7,"title":["Head acceleration event metrics in youth contact sports more dependent on sport than level of play"],"prefix":"10.1177","volume":"235","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9218-9194","authenticated-orcid":false,"given":"Taylor","family":"Lee","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roy","family":"Lycke","sequence":"additional","affiliation":[{"name":"Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4281-8591","authenticated-orcid":false,"given":"Joshua","family":"Auger","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacob","family":"Music","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Dziekan","sequence":"additional","affiliation":[{"name":"Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharlene","family":"Newman","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Talavage","sequence":"additional","affiliation":[{"name":"Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA"},{"name":"Department of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Larry","family":"Leverenz","sequence":"additional","affiliation":[{"name":"Department of Health and Kinesiology, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8907-5716","authenticated-orcid":false,"given":"Eric","family":"Nauman","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA"},{"name":"Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA"},{"name":"Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2020,11,13]]},"reference":[{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2012.01.034"},{"key":"e_1_3_4_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/00001199-200609000-00001"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.1097\/JSM.0000000000000308"},{"key":"e_1_3_4_5_2","doi-asserted-by":"publisher","DOI":"10.1089\/neu.2014.3582"},{"key":"e_1_3_4_6_2","doi-asserted-by":"publisher","DOI":"10.1097\/00042752-200401000-00003"},{"key":"e_1_3_4_7_2","first-page":"495","article-title":"Concussions among United States high school and collegiate athletes","volume":"42","author":"Gessel LM","year":"2007","unstructured":"Gessel LM, Fields SK, Collins CL, et al. 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