{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T07:51:47Z","timestamp":1791359507938,"version":"4.3.1"},"reference-count":30,"publisher":"Korea Society for Exercise Nutrition","issue":"3","license":[{"start":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:00:00Z","timestamp":1790726400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/2.0\/"}],"content-domain":{"domain":["e-pan.org"],"crossmark-restriction":true},"short-container-title":["Phys Act Nutr"],"published-print":{"date-parts":[[2026,9,30]]},"abstract":"<jats:p>[Purpose] The objective of this study was to investigate differences in match performance characteristics between forwards and defenders among elite U-17 soccer players using Global Positioning System (GPS)-derived data.[Methods] This study included 37 elite U-17 soccer players representing Gyeonggi Province. External load data collected during official matches were analyzed. Variables were classified as measures of aerobic capacity, anaerobic capacity, neuromuscular performance, and agility and change-of-direction ability. Between-group differences were assessed using independent samples t-tests.[Results] No significant positional differences were observed in total distance covered, distance per minute, mean speed, or low- to moderate-intensity activity zones (&lt;i&gt;p&lt;\/i&gt; &gt; 0.05). Compared with defenders, forwards demonstrated significantly higher values for high-speed running distance, a higher proportion of high-intensity activity, maximum speed, and high-intensity acceleration and change-of-direction performance (&lt;i&gt;p&lt;\/i&gt; &lt; 0.05).[Conclusion] These findings suggest that at the elite youth level, fundamental aerobic capacity is similarly developed across playing positions, whereas high-intensity movement and neuromuscular performance capacities vary according to playing roles and tactical demands. Accordingly, training programs and player development strategies should be designed to account for positional characteristics.<\/jats:p>","DOI":"10.20463\/pan.2026.0039","type":"journal-article","created":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T02:23:12Z","timestamp":1790734992000},"page":"48-53","update-policy":"https:\/\/doi.org\/10.20463\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Position-specific differences in match performance of elite U-17 soccer players using GPS-derived external load data: focus on forwards and defenders"],"prefix":"10.20463","volume":"30","author":[{"given":"Chulsoon","family":"Choi","sequence":"first","affiliation":[{"name":"Department of Exercise Prescription, Jeonju University, Jeonju, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hoseong","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Exercise and Medical Science, Graduate School, Dankook University, Cheonan, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kwangjin","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Exercise Prescription, Jeonju University, Jeonju, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"8359","reference":[{"key":"ref1","first-page":"365","type":"journal-article","volume-title":"Relationship between running demands in friendly match and aerobic-anaerobic field test results in youth soccer 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