In the past year (January 1, 2009- November 19, 2009), 12 subjects on 4 Space Shuttle flights (STS-125, STS-119, STS-127 and STS-128) completed the protocol. Five crewmembers on STS-129 are expected to complete the protocol in Dec, 2009. Ten additional crewmembers assigned to STS-130, STS-131, and STS-132 have volunteered to participate in this protocol. Additionally, 5 ISS crewmembers have completed this experiment and data collection is ongoing for 4 additional ISS crewmembers. Actigraphy data continue to be scored and are undergoing interpretation and analysis. Computer programming continues that will allow direct input of Actiwatch data into our Computer Performance Simulation Software. This will allow us to estimate the circadian phase of each subject pre-launch, inflight and post-flight. Through the FAS Science Challenge Internship Program, a Ph.D. student from Ireland was assigned the Division of Sleep Medicine; he devoted a portion of his efforts to data analysis on this project for approximately 6 months (September 2008 until April 2009).
Protocol. Our data collection protocol remains the same.
Equipment. Crewmembers continue to use the recently designed neoprene bands for the Actiwatch and the reduced-in-size sleep logs. Based on feedback from the crewmembers, we also offer a choice to use the old Velcro bands.
Recruitment of Subjects. STS-129, STS-130, STS-131 and STS-132 crewmembers were given an informed consent briefing in this past year. At least 3 crewmembers on each Shuttle mission volunteered to participate. All U.S. crewmembers (primary and back-up) scheduled for ISS missions were also briefed. All of the ISS crewmembers volunteered to participate. We also briefed and had volunteers from ESA ISS crewmembers.
Training. FAM training sessions were conducted with volunteer participants from STS-127, STS-128, STS-129, STS-130, STS-131 and STS-132.. Increments 21-24 were trained as well.
Baseline Data Collection. Baseline (L-90) data were collected for STS-119, STS-127, STS-128 and STS-129 crewmembers. Baseline (L-90) data were also collected for ISS crewmembers. Preflight (L-11 until launch) data were collected for STS-119, STS-127, STS-128 and STS-129 crewmembers and ISS crewmembers.
Postflight data (landing until R+7) were collected for STS-125, STS-119, STS-127 and STS-128 crewmembers and for ISS crewmembers assigned to Increments 18 and 19. Additonal postflight debriefs are expected in December 2009 for STS-129 and ESA ISS crewmembers. [Both prime and back-up ISS crewmembers participated in BDC data collection].
Inflight Data Collection. In flight data were collected for STS-125 (4), STS-119 (2), STS-127 (2) and STS-128 (4) crewmembers and five ISS crewmembers assigned to Increments 18 and 19. Data collection is onging for 4 ISS crewmembers.
Flight Assignment Description: STS 104, STS 109, STS 111, STS 112, STS 113, STS 114, STS-115, STS-116, STS-118 STS-120, STS-121, STS 122, STS 123, STS 124, STS 125, STS 126, STS-127, STS-128, STS-129, STS-130, STS-131, STS-132. ISS Increments 14, 15, 16, 17, 18, 19, 20, 21.22, 23, 24
Abstracts for Journals and Proceedings
Barger LK, Wright KP Jr, Walsh L, Benedix S, Kubey A, Czeisler CA. "Sleep on Multiple Space Shuttle and International Space Station Missions." Presented at the NASA Human Research Program Investigators’ Workshop, South Shore Harbour Resort and Conference Center, League City, Texas, February 2009.
Conference proceedings, NASA Human Research Program Investigators’ Workshop, February 2009. , Feb-2009