Hand Posture Analyzer (HPA) examines the way hand and arm muscles are used differently during grasping and reaching tasks in weightlessness. Measurements are compared to those taken before and after flight to improve understanding of the effects of long-duration space flight on muscle fatigue.Principal Investigator(s)
Italian Space Agency (ASI), Rome, , Italy
National Aeronautics and Space Administration (NASA)Sponsoring Organization
Italian Space Agency (ASI)Research Benefits
Information PendingISS Expedition Duration:
April 2003 - April 2008Expeditions Assigned
7,8,11,16Previous ISS Missions
CHIRO experiment in April 2002 during the taxi flight Soyuz TM34. Also performed during Increments 7 and 8.
The Hand Posture Analyzer (HPA) examined how hand and arm muscles are used differently during grasping and reaching tasks in weightlessness by collecting kinematic and force data on astronaut?s upper limbs (hands, wrists and forearms). Three different sets of data were collected: preflight, in-flight and postflight. The measurements involved the crew member manipulating both virtual and concrete objects, is researched to assess the approaching, reaching, and grasping mechanics of the hand and fingers without the effect of gravity.
This investigation provides information on performance modification of the muscular system during long stays in microgravity, and the characterization of motion strategies and postural behavior of the human body in weightlessness. Results may lead to the optimization of constructive criteria in the design of orbital modules, devices, and tools for use in space.Earth Applications
This investigation provides information on performance modification of the muscular system during long stays in microgravity, and the characterization of motion strategies and postural behavior of the human body in weightlessness. Results may lead to the optimization of constructive criteria in the design of orbital modules, devices, and tools for use in space.
The Mental Imagery of Gravity Effects on Object Motion investigation consists of bouncing an imaginary tennis ball off of the ceiling (overhead racks) in the Lab module and catching the ball. The initial position for holding the ball is with the arm straight down by the crewmembers side. To toss the ball, bend the arm approximately 90 degrees and release the ball. Imagine the speed with which the ball travels as it moves up to the ceiling of the module then returns to your hand. At the point in time that you think the ball would return to your hand, "catch" the ball and hold that position until the software prompts you to prepare for the next toss.Operational Protocols
HPA operations consist of the hardware setup, performance of the four protocols, and the disassembly of the hardware.
The HPA was launched to ISS on 12 Progress in August 2003. It was performed during Expeditions 7 and 8 on ISS; data from six HPA sessions were collected during Expedition 7 from one crewmember; two preflight collections, two in-flight collections, and two postflight collections. At the end of Expedition 10, European Space Agency (ESA) astronaut Roberto Vittori performed in-flight data collection with the HPA hardware. These data are being combined with data from the preliminary version of the same hardware (CHIRO) that was used on board ISS during an earlier ?Marco Polo? mission with astronaut Roberto Vittori in 2002. Together, these experiments assessed the short- and long-term effects of weightlessness on upper limb performance. (Evans et al. 2009)
Zolesi V, Serafini L, Baldacci S, Neri G, Liuni L, Flore F, Posteraro F, Pastacaldi P, Dario P, Zago M, Lacquaniti F. New protocols for the analysis of the performance of the human upper limb on the International Space Station. AIAA Space 2003 Conference and Exposition, Long Beach, CA; 2003 Sep 23-25
Neri G, Zolesi V. Biomedical research on the International Space Station postural and manipulation problems of the human upper limb in weightlessness. AIP Conference Proceedings: Space Technology and Applications International Forum, Albuquerque, NM; 2000 30 Jan - 3 Feb 2000 166-171.