BACKGROUND: During early spaceflights, many crewmembers did not meet their caloric requirements and consequently lost body mass during flight, as assessed by a decrease in postflight body mass. Maintaining body mass during spaceflight is crucial for maintaining crew health and monitoring body mass is thus important to medical operations as well as being a key component of human research. Determining body mass becomes difficult in a microgravity environment. METHODS: We report data from two mass measurement devices on the International Space Station (ISS): the Russian body mass measuring device (BMMD), which uses spring oscillation physics, and NASA's Space Linear Acceleration Mass Measurement Device (SLAMMD), which uses Newton's second law of motion (F = ma). RESULTS: For 25 crewmembers whose body mass was measured on both devices, significant body mass loss occurred compared to preflight (gravimetric scale) and averaged -4.4% as assessed by BMMD and -2.8% as assessed by SLAMMD. After an initial loss in the first 30 d of flight, body mass remained constant through the rest of the mission, as determined using either device. The mean difference between the two devices was 1.1 kg when the closest SLAMMD and BMMD measurements were compared (6.9 ± 6.2 d apart). Dietary intake during flight is approximately 80% of the World Health Organization estimated requirement and the decrease in body mass follows in-flight energy intake closely on average. CONCLUSION: Body mass monitoring is important for monitoring crew health during a mission and to help ensure that crewmembers consume adequate energy intake to mitigate the risks of spaceflight.
BACKGROUND: During early spaceflights, many crewmembers did not meet their caloric requirements and consequently lost body mass during flight, as assessed by a decrease in postflight body mass. Maintaining body mass during spaceflight is crucial for maintaining crew health and monitoring body mass is thus important to medical operations as well as being a key component of human research. Determining body mass becomes difficult in a microgravity environment. METHODS: We report data from two mass measurement devices on the International Space Station (ISS): the Russian body mass measuring device (BMMD), which uses spring oscillation physics, and NASA's Space Linear Acceleration Mass Measurement Device (SLAMMD), which uses Newton's second law of motion (F = ma). RESULTS: For 25 crewmembers whose body mass was measured on both devices, significant body mass loss occurred compared to preflight (gravimetric scale) and averaged -4.4% as assessed by BMMD and -2.8% as assessed by SLAMMD. After an initial loss in the first 30 d of flight, body mass remained constant through the rest of the mission, as determined using either device. The mean difference between the two devices was 1.1 kg when the closest SLAMMD and BMMD measurements were compared (6.9 ± 6.2 d apart). Dietary intake during flight is approximately 80% of the World Health Organization estimated requirement and the decrease in body mass follows in-flight energy intake closely on average. CONCLUSION: Body mass monitoring is important for monitoring crew health during a mission and to help ensure that crewmembers consume adequate energy intake to mitigate the risks of spaceflight.
Authors: Mariya Stavnichuk; Nicholas Mikolajewicz; Tatsuya Corlett; Martin Morris; Svetlana V Komarova Journal: NPJ Microgravity Date: 2020-05-05 Impact factor: 4.415
Authors: Francine E Garrett-Bakelman; Manjula Darshi; Stefan J Green; Ruben C Gur; Ling Lin; Brandon R Macias; Miles J McKenna; Cem Meydan; Tejaswini Mishra; Jad Nasrini; Brian D Piening; Lindsay F Rizzardi; Kumar Sharma; Jamila H Siamwala; Lynn Taylor; Martha Hotz Vitaterna; Maryam Afkarian; Ebrahim Afshinnekoo; Sara Ahadi; Aditya Ambati; Maneesh Arya; Daniela Bezdan; Colin M Callahan; Songjie Chen; Augustine M K Choi; George E Chlipala; Kévin Contrepois; Marisa Covington; Brian E Crucian; Immaculata De Vivo; David F Dinges; Douglas J Ebert; Jason I Feinberg; Jorge A Gandara; Kerry A George; John Goutsias; George S Grills; Alan R Hargens; Martina Heer; Ryan P Hillary; Andrew N Hoofnagle; Vivian Y H Hook; Garrett Jenkinson; Peng Jiang; Ali Keshavarzian; Steven S Laurie; Brittany Lee-McMullen; Sarah B Lumpkins; Matthew MacKay; Mark G Maienschein-Cline; Ari M Melnick; Tyler M Moore; Kiichi Nakahira; Hemal H Patel; Robert Pietrzyk; Varsha Rao; Rintaro Saito; Denis N Salins; Jan M Schilling; Dorothy D Sears; Caroline K Sheridan; Michael B Stenger; Rakel Tryggvadottir; Alexander E Urban; Tomas Vaisar; Benjamin Van Espen; Jing Zhang; Michael G Ziegler; Sara R Zwart; John B Charles; Craig E Kundrot; Graham B I Scott; Susan M Bailey; Mathias Basner; Andrew P Feinberg; Stuart M C Lee; Christopher E Mason; Emmanuel Mignot; Brinda K Rana; Scott M Smith; Michael P Snyder; Fred W Turek Journal: Science Date: 2019-04-12 Impact factor: 47.728
Authors: Zarana S Patel; Tyson J Brunstetter; William J Tarver; Alexandra M Whitmire; Sara R Zwart; Scott M Smith; Janice L Huff Journal: NPJ Microgravity Date: 2020-11-05 Impact factor: 4.415
Authors: Mariya Stavnichuk; Nicholas Mikolajewicz; Tatsuya Corlett; Martin Morris; Svetlana V Komarova Journal: NPJ Microgravity Date: 2020-05-05 Impact factor: 4.415