{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T14:58:53Z","timestamp":1791644333510,"version":"4.3.4"},"reference-count":25,"publisher":"American Physiological Society","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Applied Physiology"],"published-print":{"date-parts":[[1999,1,1]]},"abstract":"<jats:p>The maximal power of the lower limbs was determined in four astronauts (age 37\u201353 yr) 1) during maximal pushes of \u223c250 ms on force platforms [\u201cmaximal explosive power\u201d (MEP)] or 2) during all-out bouts of 6\u20137 s on an isokinetic cycloergometer [pedal frequency 1 Hz: maximal cycling power (MCP)]. The measurements were done before and immediately after spaceflights of 31\u2013180 days. Before flight, peak and mean values were 3.18 \u00b1 0.38 and 1.5 \u00b1 0.13 (SD) kW for MEP and 1.17 \u00b1 0.12 and 0.68 \u00b1 0.08 kW for MCP, respectively. After reentry, MEP was reduced to 67% after 31 days and to 45% after 180 days. MCP decreased less, attaining \u223c75% of preflight level, regardless of the flight duration. The recovery of MCP was essentially complete 2 wk after reentry, whereas that of MEP was slower, a complete recovery occurring after an estimated time close to that spent in flight. In the same subjects, the muscle mass of the lower limbs, as assessed by NMR, decreased by 9\u201313%, irrespective of flight duration (J. Zange, K. M\u00fcller, M. Schuber, H. Wackerhage, U. Hoffmann, R. W. G\u00fcnther, G. Adam, J. M. Neuerburg, V. E. Sinitsyn, A. O. Bacharev, and O. I. Belichenko. Int. J. Sports Med. 18, Suppl. 4: S308\u2013S309, 1997). The larger fall in maximal power, compared with that in muscle mass, suggests that a fraction of the former (especially relevant for MEP) is due to the effects of weightlessness on the motor unit recruitment pattern.<\/jats:p>","DOI":"10.1152\/jappl.1999.86.1.85","type":"journal-article","created":{"date-parts":[[2017,12,22]],"date-time":"2017-12-22T08:03:36Z","timestamp":1513929816000},"page":"85-92","source":"Crossref","is-referenced-by-count":72,"title":["Effects of microgravity on maximal power of lower limbs  during very short efforts in humans"],"prefix":"10.1152","volume":"86","author":[{"given":"G.","family":"Antonutto","sequence":"first","affiliation":[{"name":"Dipartimento di Scienze e Tecnologie Biomediche dell\u2019Universit\u00e0 di Udine, I-33100 Udine, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Capelli","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze e Tecnologie Biomediche dell\u2019Universit\u00e0 di Udine, I-33100 Udine, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Girardis","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze e Tecnologie Biomediche dell\u2019Universit\u00e0 di Udine, I-33100 Udine, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Zamparo","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze e Tecnologie Biomediche dell\u2019Universit\u00e0 di Udine, I-33100 Udine, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P. 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