Does age make a difference? Predicting physical activity of South Koreans

Area of Science:

• Health Psychology
• Behavioral Science
• Gerontology

Background:

• Social cognition models of health behavior are often assumed to be universally applicable.
• However, cultural uniqueness and life-span development necessitate studying differential effects across age groups.
• The Health Action Process Approach (HAPA) is a prominent social cognition model.

Purpose of the Study:

• To examine the applicability of the Health Action Process Approach (HAPA) model to physical activity behavior in younger and middle-aged/older adults.
• To investigate age-related differences in the predictors of physical activity.
• To determine if the HAPA model demonstrates differential fit across age demographics.

Main Methods:

• A longitudinal study with a 6-month time lag was conducted.
• Participants included 697 individuals from South Korea, categorized into younger and middle-aged/older adult groups.
• Structural equation modeling was used to assess the fit of the HAPA model.

Main Results:

• The HAPA model showed a good fit for the middle-aged/older adult sample.
• In older adults, physical activity was predicted by planning, coping self-efficacy, and intention.
• These factors, in turn, were predicted by action self-efficacy, outcome expectancies, and risk perceptions.
• Conversely, the HAPA model exhibited a poor fit for the younger adult sample.

Conclusions:

• The findings suggest that the Health Action Process Approach (HAPA) model is not universally applicable across all age groups.
• Age significantly influences the motivational pathways leading to physical activity.
• Different strategies may be needed to promote physical activity in younger versus older adults.