Psychometric analysis of an activity preference survey

Physical activity preference scales are limited in number. Available scales focus on specific populations (eg. elderly, disabled), generalized activity levels, activity enjoyment, and day/time-specific activities. This study assesses psychometrics of an activity preference scale using specific activities to determine level of activity preference of broad populations. The nine-question scale required a choice between specific activities that were either physically active or sedentary (scored as 1 or 0, respectively). All questions were then summed. Scores of 0-3 indicate sedentary preferences; 4-5 moderate activity preferences; and 6-9 preferring physically activity.

More females (n=331) than males (n=7) participated. This analysis includes females only. Participants were aged 18-54. Test-retest reliability was assessed comparing baseline and follow-up surveys. Validity of responses was assessed by comparing baseline preferences with step/activity logs.

Baseline and follow-up surveys were significantly correlated (p=0.708, p<0.001). Kuder-Richardon-20 measured reliability (KR-20=0.600). Significant correlations between baseline scores and step/activity logs supported validity (p=0.498, p<0.01).

Individuals are more likely to engage in activities they prefer (CDC, 2009). This instrument was designed to complement physical activity interventions serving as a catalyst for discussions on improving physical activity levels. The reliability and validity analyses support continued use of this instrument with adult females. Additional testing with males and children is necessary to determine usefulness in family-based interventions that aim to increase family physical activity.

Table One

N(%) Mean(SD)

Baseline-Preference for 4.92(2.03)

Sedentary 106(32.0)

Moderate activity 112(33.8)

Physical activity 113(34.1)

Follow-up (n=36) 5.17(2.63)

Sedentary 9(25.0)

Moderate activity 9(25.0)

Physical activity 18(50.0)

Pedometer logs

weekly steps 8729(2520)