{"645948":{"#nid":"645948","#data":{"type":"event","title":"BioE MS Thesis Defense - Kristy Yun","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EAdvisor:\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EYoung-Hui Chang, Ph.D.\u0026nbsp;Biological Sciences, Georgia Institute of Technology\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee Members:\u0026nbsp;\u003C\/strong\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EBoris Prilutsky, Ph.D.\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EBiological Sciences, Georgia Institute of Technology\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EGregory Sawicki, Ph.D.\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EME, Georgia Institute of Technology\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ELess Work After Spaceflight:\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EHuman Performance Biomechanics\u0026nbsp;Following\u0026nbsp;Adaptation to Simulated Hypogravity\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn the next decade, humans are planning to return to the Moon and prepare for future explorations to Mars. Despite our\u0026nbsp;intuitive knowledge of gravity, we still do not fully understand how our bodies develop, function, and navigate in hypogravity\u0026nbsp;environments. This study aimed to evaluate the effect of hypogravity on the biomechanical adaptation of targeted\u0026nbsp;countermovement jumping performance. Fifteen participants jumped in and out of simulated hypogravity using a reduced-gravity simulator that provided a constant upward force near the body\u0026rsquo;s COM, effectively simulating ~0.5g. The jump was\u0026nbsp;divided into two main phases: (i) Lift (from countermovement initiation to take off) and (ii) Land (from touchdown until\u0026nbsp;stabilization of ground reaction forces). Following hypogravity adaptation, there was a meaningful effect in the normalized work\u0026nbsp;of the Lift and a significant decrease in the Land when compared to the baseline pre-adaptation jumps. Further investigation\u0026nbsp;into the additional parts of the Lift and Land revealed meaningful effects in specifically the last part of the Lift and significant\u0026nbsp;changes in the first part of the Land. Observations of normalized COM work revealed distinct control strategies for the Lift and\u0026nbsp;Land phases. The work generated during the first parts of the Lift appears to be dominantly controlled through a reactive\u0026nbsp;control strategy, as it showed no significant after-effects upon return to 1.0g. In contrast, the work generated during the late\u0026nbsp;part of the Lift and absorbed during the early part of the Land was observed to be predominantly under a predictive control\u0026nbsp;strategy, evidenced by the significant decrease in work upon returning to 1.0g. Thus, upon return to a higher gravity level,\u0026nbsp;movements requiring the legs to quickly generate and absorb energy will be most affected by sensorimotor control prediction\u0026nbsp;errors and should be taken into consideration during the post-adaptation re-acclimation process after prolonged exposure to\u0026nbsp;hypogravity.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EBioE MS Thesis Defense Kristy Yun\u0026nbsp; -\u0026nbsp;\u0026quot;Less Work After Spaceflight: \u0026nbsp;Human Performance Biomechanics Following Adaptation to Simulated Hypogravity\u0026quot;\u003C\/p\u003E\r\n","format":"limited_html"}],"field_summary_sentence":[{"value":"\u0022Less Work After Spaceflight:  Human Performance Biomechanics Following Adaptation to Simulated Hypogravity\u0022"}],"uid":"27917","created_gmt":"2021-03-31 15:39:50","changed_gmt":"2021-03-31 15:39:50","author":"Laura Paige","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2021-04-09T17:30:00-04:00","event_time_end":"2021-04-09T19:00:00-04:00","event_time_end_last":"2021-04-09T19:00:00-04:00","gmt_time_start":"2021-04-09 21:30:00","gmt_time_end":"2021-04-09 23:00:00","gmt_time_end_last":"2021-04-09 23:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"65448","name":"Bioengineering Graduate Program"}],"categories":[],"keywords":[{"id":"172056","name":"go-BioE"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"10377","name":"Career\/Professional development"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}