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Lead Increment Scientist’s Highlights for the final week of February 2011
(Highlights: Last Week of February 2011) -- Cady Coleman completed her third session with the Evaluation of Maximal Oxygen Uptake and Submaximal estimates of VO2max before, during and after long-duration space station missions (VO2max). The experiment documents changes in maximum oxygen uptake over long-duration missions.

In conjunction with VO2max, Coleman performed her third session of ESA-sponsored Thermoregulation in Humans During Long-Term Spaceflight (Thermolab). This investigation evaluates the thermoregulatory and cardiovascular adaptations during rest and exercise in the course of a long-duration microgravity exposure.

Scott Kelly completed his monthly Sleep actiwatch download. Sleep-Wake Actigraphy and Light Exposure During Spaceflight-Long (Sleep-Long) examines the effects of spaceflight and ambient light exposure on the sleep-wake cycles of crew members during long-duration stays aboard the station.

Scott Kelly performed his final session with ESA's Scaling Body-Related Actions in the Absence of Gravity, or Passages. Passages uses the Neurospat hardware to test how astronauts interpret visual information in microgravity.

Through Feb 23, the Crew Earth Observation (CEO) team has received 17,074 frames. Recent images include the Tropical Cyclone Dianne in the eastern Indian Ocean, and the Bulusan Volcanic Eruption, Philippine Islands. For this experiment, station crew members photograph natural and human-made changes on Earth. These images provide researchers with key data to better understand the planet.

Coleman and Paolo Nespoli performed their second sessions with the Japan Aerospace Exploration Agency’s (Biological Rhythms) experiment. This investigation examines the effect of long-term microgravity exposure on cardiac autonomic function by analyzing 24-hour electrocardiograms of long-duration station crew members.

The Japan Aerospace Exploration Agency-sponsored Chaos, Turbulence and its Transition Process in Marangoni Convection (Marangoni) UVP experiment performed three ground-controlled runs for a total of seven runs for the experiment. This is one of two physics experiments analyzing the behavior of a surface-tension-driven flow in microgravity.

Jorge Sotomayor, Lead Increment Scientist
Expedition 25/26

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