MRC Epidemiology Unit - Publications Database

Search MRC Epidemiology Unit publications by journal, author, programme, study, publication year and keyword from 2007 to 2022.

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author => Hajna S

Correlates of change in accelerometer-assessed total sedentary time and prolonged sedentary bouts among older English adults: results from five-year follow-up in the EPIC-Norfolk cohort.

Yerrakalva D, Hajna S, Wijndaele K, Westgate K, Khaw KT, Wareham N, Griffin SJ, and Brage S

Aging Sep 2020

(DOI : 10.18632/aging.202497)

Cross-sectional and prospective associations between active living environments and accelerometer-assessed physical activity in the EPIC-Norfolk cohort.

Hajna S, Brage S, Dalton A, Griffin SJ, Jones AP, Khaw KT, Luben R, Wareham NJ, and Panter J

Health & place Jun 2020

(DOI : 10.1016/j.healthplace.2020.102490)

Effectiveness of Minimal Contact Interventions: An RCT.

Hajna S, Sharp SJ, Cooper AJM, Williams KM, van Sluijs EMF, Brage S, Griffin SJ, and Sutton S

American Journal of Preventive Medicine Dec 2019

(DOI : 10.1016/j.amepre.2020.10.010)

Do older English adults exhibit day-to-day compensation in sedentary time and in prolonged sedentary bouts? An EPIC-Norfolk cohort analysis.

Yerrakalva D, Wijndaele K, Hajna S, Westgate K, Khaw KT, Wareham N, Griffin SJ, and Brage S

PLoS ONE May 2019

(DOI : 10.1371/journal.pone.0224225)

Effects of Mobile Health App Interventions on Sedentary Time, Physical Activity, and Fitness in Older Adults: Systematic Review and Meta-Analysis.

Yerrakalva D, Hajna S, and Griffin S

Journal of medical Internet research Apr 2019

(DOI : 10.2196/14343)

Driving status, travel modes and accelerometer-assessed physical activity in younger, middle-aged and older adults: a prospective study of 90 810 UK Biobank participants.

Hajna S, White T, Panter J, Brage S, Wijndaele K, Woodcock J, Ogilvie D, Imamura F, and Griffin SJ

International Journal of Epidemiology Mar 2019

(DOI : 10.1093/ije/dyz065)

Laboratory-Assessed Markers of Cardiometabolic Health and Associations with GIS-Based Measures of Active-Living Environments.

Hajna S, Dasgupta K, and Ross NA

International Journal of Environmental Research and Public Health Jul 2018

(DOI : 10.3390/ijerph15102079)

Descriptive epidemiology of changes in objectively measured sedentary behaviour and physical activity: six-year follow-up of the EPIC-Norfolk cohort.

Hajna S, White T, Brage S, van Sluijs EMF, Westgate K, Jones AP, Luben R, Khaw KT, Wareham NJ, and Griffin SJ

The international journal of behavioral nutrition and physical activity May 2018

(DOI : 10.1186/s12966-018-0746-5)

Steps, moderate-to-vigorous physical activity, and cardiometabolic profiles.

Hajna S, Ross NA, and Dasgupta K

Preventive medicine Jul 2017

(DOI : 10.1016/j.ypmed.2017.11.007)

Lexical neutrality in environmental health research: Reflections on the term walkability.

Hajna S, Ross NA, Griffin SJ, and Dasgupta K

BMC Public Health Jun 2017

(DOI : 10.1186/s12889-017-4943-y)