Associations Between Trajectories of Leisure-Time Physical Activity and Television Viewing Time Across Adulthood: The Cardiovascular Risk in Young Finns Study

: Yang X, Lounassalo I, Kankaanpää A, Hirvensalo M, Rovio SP, Tolvanen A, Biddle SJH, Helajärvi H, Palomäki SH, Salin K, Hutri-Kähönen N, Raitakari OT, Tammelin TH

: 2019

: Journal of Physical Activity and Health

: 16

: 12

: 1078

: 1084

: 7

: 1543-3080

DOI: https://doi.org/10.1123/jpah.2018-0650

BACKGROUND:

The purpose of this study was to
examine trajectories of leisure-time physical activity (LTPA) and
television-viewing (TV) time and their associations in adults over 10
years.

METHODS:

The sample comprised 2934 participants
(men, 46.0%) aged 24-39 years in 2001 and they were followed up for 10
years. LTPA and TV time were assessed using self-report questionnaires
in 2001, 2007, and 2011. Longitudinal LTPA and TV-time trajectories and
their interactions were analyzed with mixture modeling.

RESULTS:

Three
LTPA (persistently highly active, 15.8%; persistently moderately
active, 60.8%; and persistently low active, 23.5%) and 4 TV time
(consistently low, 38.6%; consistently moderate, 48.2%; consistently
high, 11.7%; and consistently very high, 1.5%) trajectory classes were
identified. Persistently highly active women had a lower probability of
consistently high TV time than persistently low-active women (P = .02),
whereas men who were persistently highly active had a higher probability
of consistently moderate TV time and a lower probability of
consistently low TV time than their persistently low-active counterparts
(P = .03 and P = .01, respectively).

CONCLUSIONS:

Maintaining
high LTPA levels were accompanied by less TV over time in women, but
not in men. The associations were partially explained by education, body
mass index, and smoking.