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.
- Wanigatunga, AA, Chiu, V, Cai, Y, Urbanek, JK, Mitchell, CM, Miller, ER 3rd, Christenson, RH, Rebuck, H, Michos, ED, Juraschek, SP et al.. Patterns of Daily Physical Movement, Chronic Inflammation, and Frailty Incidence. Med Sci Sports Exerc 2022; : . PubMed PMID:36170549 .
- Martinez-Amezcua, P, Garcia Morales, E, Gabriel, KP, Dooley, EE, Hornikel, B, Coresh, J, Lin, FR, Pankow, JS, Sharrett, AR, Schrack, JA et al.. The Association Between Midlife Leisure-Time Physical Activity and Hearing Loss in Late-life in the Atherosclerosis Risk in Communities (ARIC) Study. J Gerontol A Biol Sci Med Sci 2022; : . PubMed PMID:36124822 .
- Owusu, JT, Rabinowitz, JA, Tzuang, M, An, Y, Kitner-Triolo, M, Zipunnikov, V, Wu, MN, Wanigatunga, SK, Schrack, JA, Thorpe, RJ et al.. Associations between objectively measured sleep and cognition: Main effects and interactions with race in adults aged ≥50 years. J Gerontol A Biol Sci Med Sci 2022; : . PubMed PMID:36082967 .
- Hu, X, Mok, Y, Ding, N, Sullivan, KJ, Lutsey, PL, Schrack, JA, Palta, P, Matsushita, K. Physical Function and Subsequent Risk of Cardiovascular Events in Older Adults: The Atherosclerosis Risk in Communities Study. J Am Heart Assoc 2022; 11 (17): e025780. PubMed PMID:36043511 PubMed Central PMC9496416.
- Etzkorn, LH, Liu, F, Urbanek, JK, Heravi, AS, Magnani, JW, Plankey, MW, Margolich, JB, Witt, MD, Palella, FJ Jr, Haberlen, SA et al.. Patterns of objectively measured physical activity differ between men living with and without HIV. AIDS 2022; 36 (11): 1553-1562. PubMed PMID:35979829 PubMed Central PMC9395149.
- Dougherty, RJ, Liu, F, Etzkorn, L, Wanigatunga, AA, Walter, PJ, Knuth, ND, Schrack, JA, Ferrucci, L. Validation of accelerometer placement to capture energy expenditure using doubly labeled water. Appl Physiol Nutr Metab 2022; : . PubMed PMID:35939837 .
- Karas, M, Muschelli, J, Leroux, A, Urbanek, JK, Wanigatunga, AA, Bai, J, Crainiceanu, CM, Schrack, JA. Comparison of Accelerometry-Based Measures of Physical Activity: Retrospective Observational Data Analysis Study. JMIR Mhealth Uhealth 2022; 10 (7): e38077. PubMed PMID:35867392 PubMed Central PMC9356340.
- McDonnell, EI, Zipunnikov, V, Schrack, JA, Goldsmith, J, Wrobel, J. Registration of 24-hour accelerometric rest-activity profiles and its application to human chronotypes. Biol Rhythm Res 2022; 53 (8): 1299-1319. PubMed PMID:35784395 PubMed Central PMC9246189.
- Qiao, YS, Harezlak, J, Moored, KD, Urbanek, JK, Boudreau, RM, Toto, PE, Hawkins, M, Santanasto, AJ, Schrack, JA, Simonsick, EM et al.. Development of a Novel Accelerometry-Based Performance Fatigability Measure for Older Adults. Med Sci Sports Exerc 2022; 54 (10): 1782-1793. PubMed PMID:35763596 PubMed Central PMC9481701.
- Dooley, EE, Pompeii, LA, Palta, P, Martinez-Amezcua, P, Hornikel, B, Evenson, KR, Schrack, JA, Pettee Gabriel, K. Daily and hourly patterns of physical activity and sedentary behavior of older adults: Atherosclerosis risk in communities (ARIC) study. Prev Med Rep 2022; 28 : 101859. PubMed PMID:35711287 PubMed Central PMC9194653.