Actigraphy as a biomarker
Lok R, Weed L, Winer J, Zeitzer JM (2025) Adverse effects of late sleep on physical health in a large cohort of community-dwelling adults. European Journal of Internal Medicine 134:66-74.
Lok R, Suh S, Rue S, Weed L, Zeitzer JM (2025) How many days are enough? Sleep-wake timing regularity and fragmentation scores change with the number of days included. Journal of Sleep Research 34(3):e14332.
Lok R, Weed L, Winer J, Zeitzer JM (2024) Perils of the nighttime: impact of behavioral timing and preference on mental health in 73,888 community-dwelling adults. Psychiatry Research 337:115956.
Olsen M, Zeitzer JM, Nakase-Richardson R, Musgrave VH, Sorensen HBD, Mignot E, Jennum PJ (2024) A deep transfer learning approach for sleep stage classification and sleep apnea detection using wrist-worn consumer sleep technologies. IEEE Transactions in Biomedical Engineering 71(8):2506-2517.
Winer JR, Lok R, Weed L, He Z, Poston KL, Mormino EC, Zeitzer JM (2024) Impaired 24-h activity patterns are associated with an increased risk of Alzheimer's disease, Parkinson's disease, and cognitive decline. Alzheimers Research Therapy 16(1):35
Blackwell TL, Figueiro MG, Tranah GJ, Zeitzer JM, Yaffe K, Ancoli-Israel S, Kado DM, Ensrud KE, Lane NE, Leng Y, Stone KL; Osteoporotic Fractures in Men (MrOS) Study Group (2023) Associations of 24-hour light exposure and activity patterns and risk of cognitive impairment and decline in older men: the MrOS Sleep Study. Journals of Gerontology A 78(10):1834-1843.
Zeitzer JM (2024) The utility of sleep wearables-well, that depends. Sleep 47(4):zsae019.
Xiao Q, Lu J, Zeitzer JM, Matthews CE, Saint-Maurice PF, Bauer C (2022) Rest-activity profiles among U.S. adults in a nationally representative sample: a functional principal component analysis. International Journal of Behavioral Nutrition and Physical Activity 19: 32.
Xiao Q, Sampson JN, LaCroix AZ, Shadyab AH, Zeitzer JM, Ancoli-Israel S, Yaffe K, Stone K, Osteoporotic Fractures in Men (MrOS) Study Group (2021) Nonparametric parameters of 24-hour rest-activity rhythms and long-term cognitive decline and incident cognitive impairment in older men. Journal of Gerontology: Biological Sciences, in press.
Miner B, Stone KL, Zeitzer JM, Han L, Doyle M, Blackwell T, Gill TM, Redeker NS, Hajduk A, Yaggi HK (2021) Self-reported and actigraphic short sleep duration in persons with advanced age. Journal of Clinical Sleep Medicine 18: 403-413.
Posner AB, Tranah GJ, Blackwell T, Yaffe K, Ancoli-Israel S, Redline S, Leng Y, Zeitzer JM, Chen DM, Webber KR, Stone KL (2021) Predicting incident dementia and mild cognitive impairment in older women with nonparametric analysis of circadian activity rhythms in the Study of Osteoporotic Fractures. Sleep 44: zsab119.
Zeitzer JM, Blackwell T, Hoffman AR, Ancoli-Israel S, Stone K, MrOS (2018) Daily patterns of accelerometer activity predict changes in sleep, cognition, and mortality in older men. Journal of Gerontology A Biological Science and Medical Science 73: 682-687. PMCID: PMC5905637
Zeitzer JM, David R, Friedman L, Mulin E, Garcia R, Wang J, Yesavage JA, Robert PH, Shannon W (2013) Phenotyping apathy in individuals with Alzheimer’s using functional principal component analysis. American Journal of Geriatric Psychiatry 21:391-397. PMCID: PMC3603283.