{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T11:46:43Z","timestamp":1790682403831,"version":"4.1.0"},"reference-count":32,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2020,12,14]],"date-time":"2020-12-14T00:00:00Z","timestamp":1607904000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Physiol."],"abstract":"<jats:p>This study aims to investigate muscle damage occurring in the early and recovery phases after fast-velocity and slow-velocity eccentric cycling. Eleven untrained men (age, 20.0 \u00b1 1.7 years; height, 171.3 \u00b1 6.8 cm; weight, 61.8 \u00b1 7.7 kg; and %body fat, 13.2 \u00b1 2.9%) performed slow-velocity maximal isokinetic eccentric cycling (slow-velocity; 30\u00b0\/s) with one leg and fast-velocity (fast-velocity; 210\u00b0\/s) isokinetic eccentric cycling with the other leg. Changes in maximal voluntary isokinetic concentric contraction (MVCC) torque at velocities of 30 and 210\u00b0\/s, range of motion (ROM), and muscle soreness were assessed by pressure using a digital muscle stiffness instrument; thigh circumference, muscle echo intensity, and muscle stiffness were assessed before exercise, and immediately after exercise, 1 day, and 4 days after exercise. Comparing with the results obtained for slow-velocity cycling (post: 215.9 \u00b1 32.3 Nm, day 1: 192.9 \u00b1 47.4 Nm, day 4: 184.3 \u00b1 47.2 Nm) and before exercise, MVCC after fast-velocity cycling significantly decreased at immediately (160.4 \u00b1 43.5 Nm), 1 day (143.6 \u00b1 54.1 Nm), and 4 days (150.1 \u00b1 44.5 Nm) after exercise (<jats:italic>p<\/jats:italic> &amp;lt; 0.05). Significant increase in muscle soreness for vastus lateralis was observed after fast-velocity cycling (41.2 \u00b1 16.9 mm) compared with slow-velocity cycling (23.7 \u00b1 12.2 mm) 4 days after exercise (<jats:italic>p<\/jats:italic> &amp;lt; 0.05). However, no significant difference in muscle soreness was observed for rectus femoris and vastus medialis at any time points after exercise. In addition, no significant differences were observed in the ROM, thigh circumference, muscle echo intensity, and muscle stiffness. In conclusion, fast-velocity eccentric cycling causes a decrease in muscle strength and an increase in soreness as compared to slow-velocity eccentric cycling.<\/jats:p>","DOI":"10.3389\/fphys.2020.596640","type":"journal-article","created":{"date-parts":[[2020,12,14]],"date-time":"2020-12-14T04:29:10Z","timestamp":1607920150000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":17,"title":["Fast-Velocity Eccentric Cycling Exercise Causes Greater Muscle Damage Than Slow Eccentric Cycling"],"prefix":"10.3389","volume":"11","author":[{"given":"Hisashi","family":"Ueda","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yosuke","family":"Tsuchiya","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eisuke","family":"Ochi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2020,12,14]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"687","DOI":"10.1249\/MSS.0b013e3181915670","article-title":"American College of Sports Medicine position stand. 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