“Maintenance of a comprehensive database of studies evaluating the effects of dietary cholesterol on plasma lipids using a meta-analytic approach”; Egg Nutrition Center.

“Aging and adaptation to diet and relation to obesity”.

“Validation of Ultrasonometry to Assess Change in Bone Properties and Risk of Osteoporosis”;000; Howell WH (Co-PI,) Houtkooper LB (Co-PI), Going SB (Co-PI).

“Body composition assessment associated with intake of the nutritional supplement Peach Trim®”.

“Indicators of HIV Wasting Syndrome”.

Current collaboration in an interdisciplinary NIH-funded project  involves using stable isotopes (doubly labeled water) to assess changes in energy balance and body composition in previously sedentary postmenopausal women, who are not receiving hormone replacement therapy, after 6- and 12-months of strength training exercise (Bone, Estrogen and Strength Training; collaborators: TG Lohman, Physiology; LB Houtkooper and SB Going, Nutritional Sciences).  Collaboration in a second  NIH-funded project designed to assess and address causes of dietary reporting bias in a cross-sectional cohort of women using total energy expenditure measured with stable isotopes as the criterion was revised, because of the worldwide unavailability of the ¹⁸O isotope, to assess total energy expenditure using resting energy expenditure in our laboratory and physical activity energy expenditure estimated by the questionnaire validated against doubly labeled water during a previous phase of the study (collaborator: DL Taren, Arizona Prevention Center).  In addition, stable isotope techniques will be employed in a study planned with DL Taren, Arizona Prevention Center to elucidate alterations in energy balance following smoking cessation.  A proposal with M Koithan, Nursing, to examine body composition changes using bioimpedance spectroscopy during HIV wasting has been submitted (see above) in addition to the pilot study that is underway.

 Peer-reviewed publications originating from research.

Validity of self-reported energy intake in lean and obese young women, using two nutrient databases, compared with total energy expenditure assessed b Weber JL, Reid PM, Greaves KA, DeLany JP, Stanford VA, Going SB, Howell WH, Houtkooper LB. Validity of self-reported energy intake in lean and obese young women, using two nutrient databases, compared with total energy expenditure assessed by doubly-labelled water. Eur J Clin Nutr 2001;55:940-950.
• Validation of the Arizona Activity Frequency Questionnaire using doubly labeled water Staten LK, Taren DL, Howell WH, Tobar M, Poehlman ET, Hill A, Reid PM, Ritenbaugh C. Validation of the Arizona Activity Frequency Questionnaire using doubly labeled water. Med Sci Sports Exerc 2001;33:1959-1967.
• Reproducibility of DXA in obese women Cordero-MacIntyre Z, Peters W, Libanati C, España R, Howell WH, Lohman TG. Reproducibility of DXA in obese women. J Clin Densitom 2002; (journal article; in press).
• Body cell mass repletion and improved quality of life in HIV-infected individuals receiving oxandrolone Earthman CP, Reid PM, Harper IT, Ravussin E, Howell WH. Body cell mass repletion and improved quality of life in HIV-infected individuals receiving oxandrolone. J Paren Enter Nutr 2002; (journal article; submitted).
• The nutrition information seeking behavior of persons experiencing cancer: an internet study Sheppard EH, Thomson CA, Sheehan ET, Howell WH. The nutrition information seeking behavior of persons experiencing cancer: an internet study. J Am Diet Assoc 2002; (journal article; submitted).