Kramer, Andreas und Kümmel, Jakob und Dreiner, Maren und Willwacher, Steffen und Frett, Timo und Niehoff, Anja und Gruber, Markus (2020) Adaptability of a jump movement pattern to a non-constant force field elicited via centrifugation. PLoS One, 15 (4). Public Library of Science (PLoS). doi: 10.1371/journal.pone.0230854. ISSN 1932-6203.
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Kurzfassung
Humans are accustomed to Earth's constant gravitational acceleration of 1g. Here we assessed if complex movements such as jumps can be adapted to different acceleration levels in a non-constant force field elicited through centrifugation. Kinematics, kinetics and muscle activity of 14 male subjects (age 27±5years, body mass 77±6kg, height 181±7cm) were recorded during repetitive hopping in a short-arm human centrifuge for five different acceleration levels (0.5g, 0.75g, 1g, 1.25g, 1.5g). These data were compared to those recorded during normal hops on the ground, and hops in a previously validated sledge jump system. Increasing acceleration from 0.5g to 1.5g resulted in increased peak ground reaction forces (+80%, p<0.001), rate of force development (+100%, p<0.001) and muscle activity (+30 to +140%, depending on phase, side and muscle). However, most of the recorded parameters did not attain the level observed for jumps on the ground or in the jump system. For instance, peak forces during centrifugation with 1g amounted to 60% of the peak forces during jumps on the ground, ground contact time was prolonged by 90%, and knee joint excursions were reduced by 50%. We conclude that in principle, a quick adaptation to acceleration levels other than the normal constant gravitational acceleration of 1g is possible, even in the presence of a non-constant force field and Coriolis forces. However, centrifugation introduced additional constraints compared to a constant force field without rotation, resulting in lower peak forces and changes in kinematics. These changes can be interpreted as a movement strategy aimed at reducing lower limb deflections caused by Coriolis forces.
elib-URL des Eintrags: | https://elib.dlr.de/185769/ | ||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||
Titel: | Adaptability of a jump movement pattern to a non-constant force field elicited via centrifugation | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 8 April 2020 | ||||||||||||||||||||||||||||||||
Erschienen in: | PLoS One | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||
Gold Open Access: | Ja | ||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||
Band: | 15 | ||||||||||||||||||||||||||||||||
DOI: | 10.1371/journal.pone.0230854 | ||||||||||||||||||||||||||||||||
Verlag: | Public Library of Science (PLoS) | ||||||||||||||||||||||||||||||||
ISSN: | 1932-6203 | ||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
Stichwörter: | jump movement; centrifugation; | ||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||
HGF - Programmthema: | Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Menschliche Leistungsfähigkeit unter veränderten Schwerkraftbedingungen | ||||||||||||||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Luft- und Raumfahrtmedizin > Gravitationsbiologie | ||||||||||||||||||||||||||||||||
Hinterlegt von: | Becker, Christine | ||||||||||||||||||||||||||||||||
Hinterlegt am: | 11 Apr 2022 10:19 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 24 Mai 2022 17:00 |
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