{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:53:33Z","timestamp":1760147613411,"version":"build-2065373602"},"reference-count":15,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2023,2,21]],"date-time":"2023-02-21T00:00:00Z","timestamp":1676937600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>The process of becoming a ball kid at the French Open consists of different stages of selection and training. Selection and training of the ball kids is organized by the French Federation of Tennis (FFT) and is intended to be an immersive and educational experience. A sample was made up of ball kids participating at the 2022 French Open (Roland Garros). For this study, 26 ball kids were analyzed during several rotations of their activity on the court with different durations (N = 26; age = 15.00 \u00b1 0.84; height = 169.03 \u00b1 9.62; weight = 52.26 \u00b1 7.35). Each ball kid participated in several analyzed rotations (data entry N = 94). Two groups are analyzed: ball kids at the net and in the back of the court. The result of the statistical analysis showed a statistically significant difference between the two groups in the variables: meters covered per minute on court (t = 6.85, p = 0.00), total number of decelerations per minute (t = 8.39, p = 0.00), walking and jogging meters per minute (t = 4.68, p = 0.00), and maximum velocity achieved (t = 3.02, p = 0.00). Participating as a ball kid during a professional tournament presents a unique experience for young athletes. Young people that are participating can improve their fitness, social skills, mental abilities, and well-being due to requests for the ball kids\u2019 duties during match play and out of play activities.<\/jats:p>","DOI":"10.3390\/ijerph20053793","type":"journal-article","created":{"date-parts":[[2023,2,22]],"date-time":"2023-02-22T02:31:55Z","timestamp":1677033115000},"page":"3793","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["\u201cNew Balls Please\u201d: Physical Load Imposed on Ball Boys during the Roland Garros 2022"],"prefix":"10.3390","volume":"20","author":[{"given":"Cedric","family":"Brandli","sequence":"first","affiliation":[{"name":"Research & Development, Holistic Tennis, 69340 Franchville, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Filip","family":"Svalina","sequence":"additional","affiliation":[{"name":"Faculty of Kinesiology, University of Zagreb, Horva\u0107anski Zavoj 15, 10000 Zagreb, Croatia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7203-0776","authenticated-orcid":false,"given":"\u0160ime","family":"Ver\u0161i\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Kinesiology, University of Split, Ulica Nikole Tesle 6, 21000 Split, Croatia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dario","family":"Novak","sequence":"additional","affiliation":[{"name":"Faculty of Kinesiology, University of Zagreb, Horva\u0107anski Zavoj 15, 10000 Zagreb, Croatia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,21]]},"reference":[{"key":"ref_1","unstructured":"(2023, February 18). 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Sports Med."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/20\/5\/3793\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:37:57Z","timestamp":1760121477000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/20\/5\/3793"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2,21]]},"references-count":15,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2023,3]]}},"alternative-id":["ijerph20053793"],"URL":"https:\/\/doi.org\/10.3390\/ijerph20053793","relation":{},"ISSN":["1660-4601"],"issn-type":[{"type":"electronic","value":"1660-4601"}],"subject":[],"published":{"date-parts":[[2023,2,21]]}}}