Symposium Speaker: Jennifer A. Schrack, PhD, MS

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

  1. Wanigatunga, AA, Liu, F, Wang, H, Urbanek, JK, An, Y, Spira, AP, Dougherty, RJ, Tian, Q, Moghekar, A, Ferrucci, L et al.. Daily Physical Activity Patterns as a Window on Cognitive Diagnosis in the Baltimore Longitudinal Study of Aging (BLSA). J Alzheimers Dis 2022; : . PubMed PMID:35599480 .
  2. Michos, ED, Kalyani, RR, Blackford, AL, Sternberg, AL, Mitchell, CM, Juraschek, SP, Schrack, JA, Wanigatunga, AA, Roth, DL, Christenson, RH et al.. The Relationship of Falls With Achieved 25-Hydroxyvitamin D Levels From Vitamin D Supplementation: The STURDY Trial. J Endocr Soc 2022; 6 (6): bvac065. PubMed PMID:35592513 PubMed Central PMC9113179.
  3. Tian, Q, Schrack, JA, Landman, BA, Resnick, SM, Ferrucci, L. Longitudinal associations of absolute versus relative moderate-to-vigorous physical activity with brain microstructural decline in aging. Neurobiol Aging 2022; 116 : 25-31. PubMed PMID:35544996 .
  4. Juraschek, SP, Appel, LJ, M Mitchell, C, Mukamal, KJ, Lipsitz, LA, Blackford, AL, Cai, Y, Guralnik, JM, Kalyani, RR, Michos, ED et al.. Comparison of supine and seated orthostatic hypotension assessments and their association with falls and orthostatic symptoms. J Am Geriatr Soc 2022; : . PubMed PMID:35451096 .
  5. Qiao, Y, Wanigatunga, AA, An, Y, Liu, F, Spira, AP, Davatzikos, C, Tian, Q, Simonsick, EM, Ferrucci, L, Resnick, SM et al.. Longitudinal associations between energy utilization and brain volumes in cognitively normal middle aged and older adults. Sci Rep 2022; 12 (1): 6472. PubMed PMID:35440799 PubMed Central PMC9018828.
  6. Cai, Y, Wanigatunga, AA, Mitchell, CM, Urbanek, JK, Miller, ER 3rd, Juraschek, SP, Michos, ED, Kalyani, RR, Roth, DL, Appel, LJ et al.. The effects of vitamin D supplementation on frailty in older adults at risk for falls. BMC Geriatr 2022; 22 (1): 312. PubMed PMID:35399053 PubMed Central PMC8994906.
  7. Gao, Y, Hua, S, Mok, Y, Salameh, M, Qi, Q, Chen, G, Williams-Nguyen, J, Pester, M, Garcia-Bedoya, O, Sotres-Alvarez, D et al.. Joint associations of peripheral artery disease and accelerometry-based physical activity with mortality: The Hispanic Community Health Study/Study of Latinos (HCHS/SOL). Atherosclerosis 2022; 347 : 55-62. PubMed PMID:35334347 PubMed Central PMC9014557.
  8. Urbanek, JK, Roth, DL, Karas, M, Wanigatunga, AA, Mitchell, CM, Juraschek, SP, Cai, Y, Appel, LJ, Schrack, JA. Free-living gait cadence measured by wearable accelerometer: a promising alternative to traditional measures of mobility for assessing fall risk. J Gerontol A Biol Sci Med Sci 2022; : . PubMed PMID:35029661 .
  9. Cai, Y, Tian, Q, Gross, AL, Wang, H, E, JY, Agrawal, Y, Simonsick, EM, Ferrucci, L, Schrack, JA. Motor and Physical Function Impairments as Contributors to Slow Gait Speed and Mobility Difficulty in Middle-Aged and Older Adults. J Gerontol A Biol Sci Med Sci 2022; : . PubMed PMID:34984437 .
  10. Tian, Q, Studenski, SA, An, Y, Kuo, PL, Schrack, JA, Wanigatunga, AA, Simonsick, EM, Resnick, SM, Ferrucci, L. Association of Combined Slow Gait and Low Activity Fragmentation With Later Onset of Cognitive Impairment. JAMA Netw Open 2021; 4 (11): e2135168. PubMed PMID:34792590 PubMed Central PMC8603083.
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Schrack Lab Website

Curriculum vitae