{"schema":"record/v1","id":"art_01M5NP1H71AZKFSZVCTZB1KESQ","type":"article","revision":1,"etag":"\"r1.s0\"","title":"What contact and flight times and step rate does an open running study give, and how many frames is the flight phase?","summary":"Partially verified: the curator re-read none of the cited sources; S4, S5 rest on the producer's pinned reading. A PLoS ONE study with 1000 Hz high-speed video reports, for runners at 3.25 m/s on a treadmill, contact time 0.267 s, flight time 0.093 s and 166.8 steps/min. At 24 fps a step is about 8.6 frames with about 6.4 contact and 2.2 flight frames (author arithmetic). A second open paper reports that flight time rises and contact time falls as running speed increases but its mean values are in figures not read here.","status":"active","body":{"text":"Partially verified: the curator re-read none of the cited sources; S4, S5 rest on the producer's pinned reading.\n\nA PLoS ONE study with 1000 Hz high-speed video reports, for runners at 3.25 m/s on a treadmill, contact time 0.267 s, flight time 0.093 s and 166.8 steps/min. At 24 fps a step is about 8.6 frames with about 6.4 contact and 2.2 flight frames (author arithmetic). A second open paper reports that flight time rises and contact time falls as running speed increases but its mean values are in figures not read here.\n\nCurator qualifications: Partially verified: the curator re-read none of the cited sources; S4, S5 rest on the producer's pinned reading. Curator GET 2026-10-23 of the sources not re-read (mechanical source evidence, not semantic verification): S4: HTTP 200, bytes equal to the producer pin; S5: HTTP 200, bytes equal to the producer pin.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6759187/fullTextXML","note":"candidate evidence excerpts"},{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6942482/fullTextXML","note":"candidate evidence excerpts"}]},"categories":["T07"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"metadata_checked","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6759187/fullTextXML","claim":"A PLoS ONE study with 1000 Hz high-speed video reports, for runners at 3.25 m/s on a treadmill, contact time 0.267 s, flight time 0.093 s and 166.8 steps/min. 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At 24 fps a step is about 8.6 frames with about 6.4 contact and 2.2 flight frames (author arithmetic). A second open paper reports that flight time rises and contact time falls as running speed increases but its mean values are in figures not read here.\n\nCurator qualifications: Partially verified: the curator re-read none of the cited sources; S4, S5 rest on the producer's pinned reading. Curator GET 2026-10-23 of the sources not re-read (mechanical source evidence, not semantic verification): S4: HTTP 200, bytes equal to the producer pin; S5: HTTP 200, bytes equal to the producer pin.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6759187/fullTextXML","note":"candidate evidence excerpts"},{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6942482/fullTextXML","note":"candidate evidence excerpts"}]},"tags":[],"type":"article","links":[],"title":"What contact and flight times and step rate does an open running study give, and how many frames is the flight phase?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Partially verified: the curator re-read none of the cited sources; S4, S5 rest on the producer's pinned reading. A PLoS ONE study with 1000 Hz high-speed video reports, for runners at 3.25 m/s on a treadmill, contact time 0.267 s, flight time 0.093 s and 166.8 steps/min. At 24 fps a step is about 8.6 frames with about 6.4 contact and 2.2 flight frames (author arithmetic). A second open paper reports that flight time rises and contact time falls as running speed increases but its mean values are in figures not read here.","evidence":{"claims":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6759187/fullTextXML","claim":"A PLoS ONE study with 1000 Hz high-speed video reports, for runners at 3.25 m/s on a treadmill, contact time 0.267 s, flight time 0.093 s and 166.8 steps/min. At 24 fps a step is about 8.6 frames with about 6.4 contact and 2.2 flight frames (author arithmetic). 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