{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T16:09:03Z","timestamp":1781712543185,"version":"3.54.5"},"reference-count":27,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2021,10,9]],"date-time":"2021-10-09T00:00:00Z","timestamp":1633737600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002853","name":"China Foundation for Poverty Alleviation","doi-asserted-by":"publisher","award":["5310000050000784XYA18100"],"award-info":[{"award-number":["5310000050000784XYA18100"]}],"id":[{"id":"10.13039\/501100002853","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Children in China\u2019s poor rural areas often have insufficient protein and micronutrient intake. There is little research about the effect of milk and egg supplementation published on these children. A prospective randomized controlled trial was applied to evaluate the effect of milk and egg supplementation on the growth and fitness of poor rural primary school students in southwest China whose physical development was below national averages. A total of 955 healthy students aged 6\u201313 years old were recruited. The intervention group (538) received 200 g milk and 50 g braised egg at each school day, while the control group (417) kept their normal diet and received no extra supplementation. Serum vitamin D levels were measured by an enzyme-linked immunosorbent assay. A mixed linear model with repeated measures was performed to analyze the efficacy of the supplementation. Statistically significant interactions between groups and time were seen in weight in boys, but not in girls. Significant improvement in vitamin D levels, the broad jump, and the 8 \u00d7 50 m shuttle run were observed in both genders. Therefore, the supplementation of egg and milk for two years might have a positive effect on growth and physical fitness and decreasing vitamin D deficiency in poor rural Chinese children.<\/jats:p>","DOI":"10.3390\/nu13103544","type":"journal-article","created":{"date-parts":[[2021,10,10]],"date-time":"2021-10-10T21:37:29Z","timestamp":1633901849000},"page":"3544","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Changes in Fitness of Rural Primary School Students from Southwest China after Two-Year\u2019s Nutrition Intervention"],"prefix":"10.3390","volume":"13","author":[{"given":"Ran","family":"Zhao","sequence":"first","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"},{"name":"Beijing Chaoyang District Taiyanggong Community Health Service Center, Beijing 100028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3259-3969","authenticated-orcid":false,"given":"Qian","family":"Gan","sequence":"additional","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhuolun","family":"Hu","sequence":"additional","affiliation":[{"name":"Department of International Health Human Nutrition, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peipei","family":"Xu","sequence":"additional","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Li","sequence":"additional","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Titi","family":"Yang","sequence":"additional","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hui","family":"Pan","sequence":"additional","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoqi","family":"Hu","sequence":"additional","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qian","family":"Zhang","sequence":"additional","affiliation":[{"name":"National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,9]]},"reference":[{"key":"ref_1","unstructured":"Wang, M. 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