Voluntary head stabilisation in space during oscillatory trunk movements in the frontal plane performed before, during and after a prolonged period of weightlessness

Experimental Brain Research
B AmblardA Pedotti

Abstract

The ability to voluntarily stabilise the head in space exhibited by two subjects during lateral rhythmic oscillations of the trunk has been investigated before, during and after a prolonged period of microgravity (microG) exposure. In flight acquisitions were performed onboard the Core Module of the Russian Space Station MIR as part of the T4 "Human Posture in Microgravity" experiment of the 179-days ESA-RKA mission EUROMIR-95. Data collection and kinematic analysis were performed by means of a space-qualified version of the automatic motion analyser ELITE. Head stabilisation in space strategy was estimated by means of the head anchoring index and cross-correlation analysis. Results show that head orientation may be well stabilised about the roll axis both with and without the presence of visual information. This was true despite the expected reduction in vestibular efficiency and muscular proprioception occurring in-flight. In one subject, however, vision was found to improve head stabilisation in space post-flight, presumably to recover from the postural deficiency induced by the long-term microG exposure. Head stability during trunk movements was achieved with either over-compensatory (out-of-phase), under-compensatory (in-p...Continue Reading

Citations

Oct 3, 2003·Journal of Biomechanics·Alessandra PedrocchiGiancarlo Ferrigno
Aug 11, 2005·Chiropractic & Osteopathy·Mark W MorningstarTrevor V Ireland
Sep 8, 2004·Brain & Development·Bernard DanGuy Chéron
Aug 14, 2010·Human Movement Science·Christine AssaianteMarianne Vaugoyeau
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Aug 21, 2014·Research Quarterly for Exercise and Sport·Chia-Wei LinCheng-Feng Lin
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Jan 25, 2014·Journal of Applied Physiology·Catherine R LowreyLeah R Bent
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