To the best of our knowledge, this is the first systematic review and meta-analysis to summarize the evidence on prevalence of meeting the 24-hour movement guidelines and its associations with health indicators among people with disabilities. A total of 24 studies including 77510 participants with disabilities from 8 countries were represented in this review. Collectively, the review indicated that only 6.97% of the participants across studies met all three 24-hour movement guidelines and there were significant age and disability type differences in guideline adherence. In addition, there was preliminary evidence suggesting that participants meeting all 3 guidelines generally reported better psychosocial health than those met none or only 1 guideline. Unfortunately, more than 10% participants (16.65%) across studies met none of the guidelines in comparison to those meeting all of the guidelines. As such, it is unlikely that people with disabilities are enjoying the psychosocial health benefits associated with meeting all, or even some, of the guidelines. For the individual movement behaviors, the highest adherence rate was for sleep duration (54.01%), followed by sedentary time (47.10%) and physical activity (22.89%). These findings can inform intervention priorities for movement behaviors in people with disabilities.
In a recent meta-analysis of 387437 healthy individuals aged 3–18 years from 23 countries, it was demonstrated that 7.12% of the participants met all three 24-hour movement guidelines.11 This figure is slightly higher than that reported in the present review of people with disabilities (21 studies, 76607 participants) in which only 6.97% met all 3 guidelines. The present review also showed that while approximately half of the participants (24 studies, 77510 participants) met the sleep duration (54.01%) and sedentary time (47.10%) guidelines, only 22.89% met the physical activity guideline. This finding highlights that physical activity may be the main driver of not meeting all 3 guidelines among people with disabilities. Previous analyses have also identified that meeting the physical activity guideline is the biggest concern for people with disabilities.21, 56 This is because people with disabilities usually face a multitude of barriers to physical activity participation than their nondisabled peers, including personal, interpersonal and environmental factors.58, 59 Overall, previous studies along with ours make it clear that meeting the three 24-hour movement guidelines, especially the physical activity one, is very challenging for people with disabilities. Therefore, enhancing physical activity participation should be prioritized to increase the prevalence of meeting all 3 guidelines of this population.
Empirical studies have identified numerous factors such as sociodemographic factors, environmental factors, and family characteristics that may affect the prevalence of meeting the 24-hour movement guidelines among people without disabilities.12, 60 The current review examined whether age, region, and disability type could affect the adherence to the 24-hour movement guidelines in people with disabilities, and found that age and disability type were significantly associated with the prevalence of meeting all 3 guidelines and physical activity guideline, and disability type was also significantly associated with the adherence to the sedentary time guideline. Prior meta-analytic and empirical studies have found age to negatively associate with the prevalence of meeting all 3 guidelines in healthy children and adolescents.11, 12 The current review adds to the previous literature, revealing that children and adolescents with disabilities had a significantly lower overall prevalence of meeting all 3 guidelines (5.10%) than that of the adults with disabilities (16.49%). There are several possible explanations for this finding. First, the finding may be related to the differences in the movement guidelines for these 2 age groups. For example, for physical activity guidelines, adults only need to reach 150 minutes per week, while children and adolescents need to accumulate 60 minutes per day (420 minutes per week), which seems more challenging for the latter.7, 9 Second, adults with disabilities may have better behavioral self-management abilities than children and adolescents with disabilities, and thus adults with disabilities are more likely to achieve these movement behaviors as exemplified by the disparity in adherence to the physical activity guideline between the 2 age groups (15.82% for the children and adolescents group vs. 57.03% for the adults group). Finally, the adult group in this review was mainly with sensory and physical disabilities, while the children and adolescents group was mostly with neurodevelopmental disorders. In other words, the disability type rather than a true age difference may explain the finding. In support of this speculation, the current review found the prevalence of meeting all 3 guidelines was significantly higher in participants with sensory impairments (13.89%) than that in participants with neurodevelopmental disorders (4.67%). People with neurodevelopmental disorders tended to engage in less physical activity and more sedentary time than peers with sensory impairments as they may experience more social communication difficulties and behavioral problems.44, 59 Supporting this idea, the differences in adherence to the physical activity and sedentary time guidelines between the 2 disability type groups were observed in this review (sensory impairments group: 39.59%/64.16% vs. neurodevelopmental disorders group: 18.09%/39.68%). Taken together, these findings suggest the need to consider differences in age and disability type in future behavioral interventions for people with disabilities.
Several reviews have provided some evidence to suggest that meeting more of the 24-hour movement guidelines is generally associated with more favorable health indicators such as emotional health and quality of life in nondisabled people.6, 61 As an extension, the current review systematically synthesized evidence pertaining to this association among people with disabilities. The association between meeting the movement guideline and adiposity observed in the present review was mixed, with only 3 out of 6 studies indicating that participants with disabilities who met all 3 guidelines were less likely to be overweight and obese than those met none.26, 27, 47 Recent reviews on people without disabilities found that meeting more movement guidelines was inversely associated with adiposity among children and youth, but not in toddlers and preschoolers.5, 13 Their findings together with ours underscores the notion that the relationship between the 24-hour movement behaviors and adiposity is complicated, especially in people with disabilities, as their behavior is influenced by additional and unique factors such as comorbidities and medication usage.39, 47 Furthermore, 9 included studies in this review examined the relationship between 24-hour movement behaviors and psychosocial health, and all these studies showed that participants with disabilities meeting all 3 guidelines reported better psychosocial health such as quality of life and social relationship.25, 27, 44–46, 50, 54–56 These findings are consistent with previous systematic reviews, which showed that meeting more guidelines was positively associated with better psychosocial health among children and adolescents without disabilities.13, 62 However, considering the limited eligible studies and different psychosocial health indicators included in the present review, the associations between the 24-hour movement guidelines and health indicators warrant further exploration.
While the present review provides important evidence regarding the prevalence of 24-hour movement guidelines and its associations with health indicators among people with disabilities, several limitations need to be recognized. First, as all of the included studies in this review were cross-sectional, it is difficult to determine the causal relationships between 24-hour movement behaviors and health indicators. Further longitudinal and intervention studies are needed to infer the causality. Second, most of the movement behaviors in the included studies were measured using proxy-report and self-report, which are prone to response error. Future studies should consider supplementing subjective measures with objective tools (e.g., accelerometers) to enhance the reliability and validity of measurement. Third, not all of the included studies used the same 24-hour movement guidelines (e.g., Canadian framework),7, 9 which may reduce comparability. Finally, most of the included studies were conducted in the United States and were mostly represented by participants with neurodevelopment disorders, limiting the generalizability of the present findings. Therefore, future work should pay more attention to understudied disability groups from different geographical regions.