Key result
Walking was consistently associated with a better physical quality of life among those at risk or with cardiovascular disease, while moderate/vigorous activity required ≥150 min/week for benefit.
Why the study?
Does physical activity of different intensity and duration moderate the relationship between cardiovascular disease or its risk factors and quality of life in adults?
Cross-Sectional (n=2,881)
Yes
Does physical activity of different intensity and duration moderate the relationship between cardiovascular disease or its risk factors and quality of life in adults?
Walking is consistently associated with better physical quality of life among individuals at risk for or with cardiovascular disease, highlighting its value in public health interventions.
Supports walking for physical QoL in CVD; hypothesis-generating, needs prospective trials before practice change.
BACKGROUND: Few studies have investigated the relationship between physical activity (PA) of low intensity and duration with quality of life (QoL) among individuals at risk or with cardiovascular disease (CVD). OBJECTIVES: To investigate whether PA of different intensity and duration moderates the relationship between CVD and its risk factors (obesity, hypertension, diabetes, dyslipidaemia) and QoL in adults. METHODS: Population-based cross-sectional studies using data from the EpiFloripa Cohort Study (Southern Brazil; n = 1,220, 38.8±12.0 years, 48.2% males) and the North West Adelaide Health Study (NWAHS, South Australia; n = 1,661, 43.7±11.1 years, 49.7% males). The physical and psychological domains of QoL were assessed using the WHOQOL-Bref (EpiFloripa) or the SF-36 (NWAHS) questionnaires. The diagnosis of CVD and its risk factors were self-reported. PA was self-reported and quantified by its intensity ["walking" or moderate/vigorous (MVPA)] and duration (none, 1-150, ≥150 min/week). Both studies were analysed separately, and results were adjusted for sociodemographic variables. RESULTS: Participants at risk or with CVD from both studies showed a lower QoL than 'healthy' individuals with a stronger relationship for the physical domain. PA duration showed a direct-trend relationship with QoL, but the associations were stronger for MVPA in both studies. However, when stratified by health status, the magnitude of the association between "walking" duration and a higher physical QoL was greater among those at risk or with CVD compared to 'healthy' individuals. Conversely, among Australians with CVD, MVPA was associated with a better physical QoL only when its duration was ≥150 min/week. All associations were stronger in the NWAHS than in the Brazilian study. CONCLUSIONS: "Walking" was more prevalent than MVPA and was consistently associated with a better physical QoL among those at risk or with CVD. These findings should be considered in the design of public health interventions designed to increase PA and improve QoL.
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Caceres et al. (2018) conducted a cross-sectional in Cardiovascular disease or its risk factors (n=2,881). Physical activity (intensity and duration) vs. No physical activity or 'healthy' individuals was evaluated on Physical and psychological domains of quality of life. Walking was consistently associated with a better physical quality of life among those at risk or with cardiovascular disease, while moderate/vigorous activity required ≥150 min/week for benefit.
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