Association between Reallocation Behaviors and Subjective Health and Stress in South Korean Adults: An Isotemporal Substitution Model

Abstract

This study used an isotemporal substitution (IS) model to determine the potential reallocation effects of sedentary behavior (SB) and physical activity (PA) on subjective health and stress in South Koreans with data from the Sixth Korean National Health and Nutrition Examination Survey 2015. The analysis included 791 participants whose accelerometer-measured PA was available, divided into three age groups (young adults = 151; mid-age adults = 334; older adults = 306). We adopted SB, light PA (LPA), and moderate-to-vigorous PA (MVPA) to determine how time was allocated to each activity level, then examined the effects of reallocation on subjective health and stress across age groups. The analyses were performed in three steps: single-activity, partition, and IS model. An additional ANCOVA was conducted on statistically significant outcomes (i.e., subjective health of young and older adults). We found that among young adults, reallocating 30 min/week of SB to LPA and to MVPA was linked to high levels of subjective health. In older adults, reallocating 30 min/week of SB and LPA to MVPA was associated with high subjective health. However, this relationship was not observed in mid-age adults. None of the age groups showed a relationship between any activity reallocation and stress. Our findings provide the first insight on the development of interventions aimed at promoting active, healthier lifestyles on the basis of behavior reallocation in South Koreans.

Associations of meeting 24-h movement guidelines with stress and self-rated health among adults: is meeting more guidelines associated with greater benefits?

“…These comparisons should, however, be taken with caution, because the latent classes in the Oftedal et al [44,45] studies were based not only on movement behaviours but also on dietary habits. Furthermore, two other previous studies [46,47] did not find a significant association between movement behaviours and stress, possibly because of their significantly smaller sample sizes compared to the current study. In our study, the strength of the association with stress frequency was almost identical across the groups meeting a combination of any two guidelines.…”

Associations of Meeting 24-hour Movement Guidelines with Stress and Self-rated Health among Adults: Is Meeting more Guidelines Associated with Greater Benefits?

“…These comparisons should, however, be taken with caution, because the latent classes in the Oftedal et al (44,45) studies were based not only on movement behaviours but also on dietary habits. Furthermore, two other previous studies (46,47) did not nd a signi cant association between movement behaviours and stress, possibly because of their signi cantly smaller sample sizes compared to the current study. In our study, the strength of the association with stress frequency was almost identical across the groups meeting a combination of any two guidelines.…”

“…The positive association of MVPA with self-rated health among adults (while considering other movement behaviours) was also found in the von Rosen and Hagströmer (48) study. Similarly, results of the Park et al(47) study suggested that increasing the time spent in MVPA at the expense of the time spent in SB is associated with better self-rated health in adults. Within the composition of movement behaviours, MVPA often shows the strongest positive association with health…”

“…Oftedal et al (44,45) found a favourable association with stress for an overall 'healthy' combination of movement behaviours and dietary habits. Some studies did not nd a signi cant association between stress and movement behaviour compositions (46,47). Furthermore, studies on the association between movement behaviour composition and self-rated health suggested a positive role of MVPA (48) and light-intensity physical activity (47).…”

“…Some studies did not nd a signi cant association between stress and movement behaviour compositions (46,47). Furthermore, studies on the association between movement behaviour composition and self-rated health suggested a positive role of MVPA (48) and light-intensity physical activity (47). However, evidence on the association of adherence to the 24-hour movement guidelines with self-rated health and stress is scarce.…”