Experiment Participation:

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+ Inflight Aerobic Exercise (DSO 476)
Experiment Performed on: +STS-40  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Orthostatic Function During Entry, Landing and Egress (DSO 603B)
Experiment Performed on: +STS-40   +STS-47  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Changes in Baroreceptor Reflex Function After Space Flight (DSO 601)
Experiment Performed on: +STS-40  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Lower Body Negative Pressure - Countermeasure Against Postflight Orthostatic Intolerance (178140)
Experiment Performed on: +STS-47  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ In-Flight LBNP: Countermeasure to Reduce Post-Space Flight Orthostatic Intolerance (DSO 478)
Experiment Performed on: +STS-47  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Changes in Endocrine Regulation of Orthostatic Tolerance Following Space Flight (DSO 613)
Experiment Performed on: +STS-37   +STS-39   +STS-42   +STS-43   +STS-44   +STS-45   +STS-46   +STS-47   +STS-48   +STS-49   +STS-50  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Heavy Isotope Enrichment of Shuttle Galley Water (DSO 480)
Experiment Performed on: +STS-35  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Changes in Total Body Water During Space Flight (DSO 460)
Experiment Performed on: +STS-26   +STS-61C  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Physiological Responses During Descent on the Space Shuttle (3.3.1)
Experiment Performed on: +Mir 18  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Noninvasive Estimation of Central Venous Pressure During Space Flight (DSO 462)
Experiment Performed on: +STS-29   +STS-30   +STS-31   +STS-33   +STS-51B   +STS-61C  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Cardiovascular Deconditioning Countermeasure Assessment (DSO 402)
Experiment Performed on: +STS-4   +STS-41C   +STS-41D   +STS-5   +STS-6   +STS-7   +STS-8   +STS-9  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Evaluation of Cardiac Rhythm Disturbances During Extravehicular Activity (DSO 482)
Experiment Performed on: +STS-49   +STS-64   +STS-69  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Effects of Space Flight on Aerobic and Anaerobic Metabolism During Exercise (DSO 608)
Experiment Performed on: +STS-39   +STS-44   +STS-45   +STS-48   +STS-53   +STS-59   +STS-62   +STS-63   +STS-65   +STS-66   +STS-67   +STS-69   +STS-71  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Studies of Orthostatic Intolerance with the Use of LBNP (3.1.1)
Experiment Performed on: +Mir 18  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Hyperosmotic Fluid Countermeasure (DSO 479)
Experiment Performed on: +STS-31   +STS-36   +STS-37   +STS-48   +STS-53  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ In-flight Holter Monitoring (DSO 463)
Experiment Performed on: +STS-30   +STS-33   +STS-36   +STS-44   +STS-61C  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Pre- and Postflight Cardiac Assessment (DSO 466)
Experiment Performed on: +STS-26   +STS-27   +STS-28   +STS-29   +STS-30   +STS-31   +STS-32   +STS-33   +STS-34   +STS-35   +STS-36   +STS-39   +STS-42  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Blood Pressure Variability During Space Flight (DSO 602)
Experiment Performed on: +STS-35   +STS-39   +STS-41   +STS-43   +STS-48   +STS-50  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ (DSO 603 )
Experiment Performed on: +STS-35   +STS-37   +STS-39   +STS-40   +STS-41   +STS-42   +STS-43   +STS-44   +STS-45   +STS-46   +STS-47   +STS-48   +STS-49   +STS-50   +STS-51   +STS-52   +STS-53   +STS-55   +STS-56   +STS-57   +STS-58   +STS-59   +STS-62   +STS-64   +STS-65   +STS-67   +STS-68   +STS-70   +STS-73   +STS-95  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ (DSO 626 )
Experiment Performed on: +STS-51   +STS-56   +STS-58   +STS-59   +STS-61   +STS-62   +STS-64   +STS-65   +STS-66   +STS-67   +STS-68   +STS-70   +STS-73   +STS-95  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Pre- and Postflight Echocardiography (DSO 465)
Experiment Performed on: +STS-61C  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Intraocular Pressure (DSO 472)
Experiment Performed on: +STS-31   +STS-32   +STS-41   +STS-44   +STS-50   +STS-52   +STS-53  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ In-flight Use of Florinef to Improve Orthostatic Intolerance Postflight (DSO 621)
Experiment Performed on: +STS-45   +STS-49   +STS-50   +STS-52   +STS-55   +STS-56   +STS-64   +STS-66   +STS-67   +STS-68   +STS-70   +STS-73   +STS-74  
Role: Co-Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ In-flight LBNP Test of Countermeasures and End-of-Mission Countermeasure Trial (DSO 623)
Experiment Performed on: +STS-52   +STS-58   +STS-62   +STS-65  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States

+ Cardiovascular Responses to Lower Body Negative Pressure Following Space Flight (DSO 607)
Experiment Performed on: +STS-37   +STS-39   +STS-43   +STS-44   +STS-45   +STS-47   +STS-50   +STS-52  
Role: Principal Investigator
Degree: Ph.D.
Institution: NASA Johnson Space Center (JSC), Houston, Texas, United States