Dr. Jennifer Schrack is Assistant Professor of Epidemiology at Johns Hopkins Bloomberg School of Public Health (JHSPH). Dr. Schrack holds a joint position with the Krieger School of Arts and Sciences, and she is affiliated with several Centers including the Center for AIDS Research, the Johns Hopkins Center on Aging and Health, the Multicenter AIDS Cohort Study, and the Welch Center for Prevention, Epidemiology and Clinical Research.
Dr. Schrack's primary area of research is the epidemiological assessment of physical activity and its associations with health and longevity in older populations. In collaboration with the SMART group from the JHSPH Department of Biostatistics, Dr. Schrack is working to establish methods to analyze and translate heart rate and accelerometry data into accurate and reliable measures of physical activity in older populations. In recognition of these efforts, Dr. Schrack was recently awarded a 2017 Johns Hopkins University Catalyst Award and a U01 from the National Institute on Aging.
Recent Publications
- Yévenes-Briones, H, García-Morales, EE, Coco, L, Stickel, AM, Schrack, JA, Reed, NS, Martinez-Amezcua, P. Prevalence of Hearing Loss and Hearing Aid Use Among Hispanic Medicare Beneficiaries 65 Years and Older. JAMA Otolaryngol Head Neck Surg 2025; : . PubMed PMID:41196606 PubMed Central PMC12593663.
- Liu, F, Schrack, JA, Walker, KA, Walston, J, Mathias, RA, Griswold, ME, Palta, P, Windham, BG, Jackson, JW. The effect of long-term adherence to physical activity recommendations in midlife on plasma proteins associated with frailty in the Atherosclerosis Risk in Communities (ARIC) study. Eur J Epidemiol 2025; : . PubMed PMID:41144111 .
- Martinez-Amezcua, P, Fuentes-Mercado, A, Etzkorn, LH, Schrack, JA, Jaime-Borja, EE, Garza-Romero, F, Gopar-Nieto, R, Madero, M, Lopez-Gil, S. Differences in Physical Activity Assessed by Accelerometry across Hemodialysis Days and Shifts. Clin J Am Soc Nephrol 2025; : . PubMed PMID:41143925 .
- Chen, D, Sekhon, VK, Roth, DL, Freedman, VA, Schrack, JA, Spira, AP, Wickwire, EM, Albrecht, JS, Malhotra, A, Kaufmann, CN et al.. Harmonizing late-life cognitive performance data across two population-based cohort studies: The Health and Retirement Study and National Health and Aging Trends Study. Alzheimers Dement (Amst) 2025; 17 (4): e70198. PubMed PMID:41089236 PubMed Central PMC12516223.
- Banerjee, S, Mihailovic, A, Sotimehin, AE, Mukherjee, MR, Almidani, L, Chen, X, Diaz, M, Schrack, JA, Stewart, KJ, Ramulu, PY et al.. Outcomes of a Physical Activity Intervention in Patients With Glaucoma: A Feasibility Study. Transl Vis Sci Technol 2025; 14 (9): 25. PubMed PMID:40960230 PubMed Central PMC12449823.
- MacDonald, DM, Adabag, S, Chen, LY, Wang, W, Juraschek, S, Raju, S, Schrack, JA, Soliman, EZ, Wu, HT, Kunisaki, KM et al.. Two-week heart rate variability measurements and lung health: a cross-sectional analysis in the ARIC study. Respir Med 2025; 248 : 108338. PubMed PMID:40907832 PubMed Central PMC12506891.
- Davoudi, A, Agrawal, Y, Wang, H, Dougherty, RJ, Wanigatunga, AA, Reed, NS, Ehrlich, JR, Gross, AL, Schrack, JA. Association of sensory and motor impairments with dementia: a cross-sectional analysis in US older adults. BMC Geriatr 2025; 25 (1): 617. PubMed PMID:40796803 PubMed Central PMC12341113.
- Donahue, PT, Schrack, JA, Thrul, J, Carlson, MC. Response to: Refining the clinical interpretation of activity variability in cognitive impairment: The need for phenotypic specificity. Alzheimers Dement (N Y) 2025; 11 (3): e70128. PubMed PMID:40589488 PubMed Central PMC12206944.
- Callow, DD, Yue, Y, Diallo, I, Rabinowitz, JA, An, Y, Alfini, AJ, Wu, MN, Wanigatunga, SK, Wanigatunga, AA, Ferrucci, L et al.. Associations of Accelerometer-Estimated Sleep with Cardiorespiratory Fitness and Energetic Efficiency among Middle-Aged and Older Adults. J Gerontol A Biol Sci Med Sci 2025; : . PubMed PMID:40577079 .
- Pomeroy, ML, Ornstein, KA, Schrack, JA, Cudjoe, TKM. Off the Grid: Reaching the Most Socially Isolated Among Us. J Am Geriatr Soc 2025; 73 (10): 3298-3300. PubMed PMID:40530614 PubMed Central PMC12303578.
