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The program included structured physical activity, with a focus on the application of mechanical loads on the upper and lower limbs. <jats:bold><jats:italic>Methods<\/jats:italic><\/jats:bold><jats:italic>:<\/jats:italic> A cluster randomized controlled trial was conducted, in which classes were randomly assigned to the intervention or control groups. A total of 295 (50.17% girls) children from the second and third grades from 12 classes in Israel were randomly allocated to an intervention consisting of three 10-minute weekly medium- to high-intensity activities throughout one academic year or to a treatment as usual control group. Bone properties were measured at the distal radius and tibia shaft using speed of sound, before and after the intervention. <jats:bold><jats:italic>Results<\/jats:italic><\/jats:bold><jats:italic>:<\/jats:italic> Distal radius properties improved significantly for both boys and girls in the intervention group (boys: mean<jats:sub>pre<\/jats:sub>\u2009=\u20093769.95, mean<jats:sub>post<\/jats:sub>\u2009=\u20093875.08, \u0394\u2009=\u20092.80%; girls: mean<jats:sub>pre<\/jats:sub>\u2009=\u20093766.27, mean<jats:sub>post<\/jats:sub>\u2009=\u20093890.83, \u0394\u2009=\u20093.30%; <jats:italic>d<\/jats:italic>\u2009=\u20091.03); whereas, tibia shaft properties only significantly improved for boys (mean<jats:sub>pre<\/jats:sub>\u2009=\u20093663.98, mean<jats:sub>post<\/jats:sub>\u2009=\u20093732.75, \u0394\u2009=\u20091.90%; <jats:italic>d<\/jats:italic>\u2009=\u20091). <jats:bold><jats:italic>Conclusions<\/jats:italic><\/jats:bold><jats:italic>:<\/jats:italic> These findings indicate that distal radius properties of children can be positively affected by a short, easy to implement intervention program that does not require special resources.<\/jats:p>","DOI":"10.1123\/jpah.2021-0782","type":"journal-article","created":{"date-parts":[[2022,5,26]],"date-time":"2022-05-26T07:49:18Z","timestamp":1653551358000},"page":"425-435","source":"Crossref","is-referenced-by-count":1,"title":["The Effects of a Physical Education Intervention Program on the Bone Properties of Second- and Third-Grade Pupils: A Cluster Randomized Controlled Trial"],"prefix":"10.1123","volume":"19","author":[{"given":"Ester","family":"Goldstein","sequence":"first","affiliation":[{"name":"School of Education, The Academic College at Wingate, Netanya, Israel"},{"name":"Physical Education Department, Givat Washington College of Education, Evtach, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eyal","family":"Rosenstreich","sequence":"additional","affiliation":[{"name":"School of Education, The Academic College at Wingate, Netanya, Israel"},{"name":"Department of Behavioral Sciences, Peres Academic Center, Rehovot, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michal","family":"Arnon","sequence":"additional","affiliation":[{"name":"Data Analysis Unit, The Academic College at Wingate, Netanya, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ella","family":"Shoval","sequence":"additional","affiliation":[{"name":"School of Education, The Academic College at Wingate, Netanya, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"100","reference":[{"issue":"1","key":"r1","series-title":"Gait Posture","doi-asserted-by":"publisher","first-page":"108","DOI":"10.1016\/j.gaitpost.2012.06.022","article-title":"Relationship between strength, balance and mobility in children aged 7\u201310 years","volume":"37","author":"Muehlbauer T","year":"2013","unstructured":"Muehlbauer T, Besemer C, Wehrle A, Gollhofer A, Granacher U. 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