PREDICT-CP: study protocol of implementation of comprehensive surveillance to predict outcomes for school-aged children with cerebral palsy

Objectives: Cerebral palsy (CP) remains the world’s most common childhood physical disability with total annual costs of care and lost well-being of $A3.87b. The PREDICT-CP (NHMRC 1077257 Partnership Project: Comprehensive surveillance to PREDICT outcomes for school age children with CP) study will investigate the influence of brain structure, body composition, dietary intake, oropharyngeal function, habitual physical activity, musculoskeletal development (hip status, bone health) and muscle performance on motor attainment, cognition, executive function, communication, participation, quality of life and related health resource use costs. The PREDICT-CP cohort provides further follow-up at 8–12 years of two overlapping preschool-age cohorts examined from 1.5 to 5 years (NHMRC 465128 motor and brain development; NHMRC 569605 growth, nutrition and physical activity). Methods and analyses: This population-based cohort study undertakes state-wide surveillance of 245 children with CP born in Queensland (birth years 2006–2009). Children will be classified for Gross Motor Function Classification System; Manual Ability Classification System, Communication Function Classification System and Eating and Drinking Ability Classification System. Outcomes include gross motor function, musculoskeletal development (hip displacement, spasticity, muscle contracture), upper limb function, communication difficulties, oropharyngeal dysphagia, dietary intake and body composition, participation, parent-reported and child-reported quality of life and medical and allied health resource use. These detailed phenotypical data will be compared with brain macrostructure and microstructure using 3 Tesla MRI (3T MRI). Relationships between brain lesion severity and outcomes will be analysed using multilevel mixed-effects models. Ethics and dissemination: The PREDICT-CP protocol is a prospectively registered and ethically accepted study protocol. The study combines data at 1.5–5 then 8–12 years of direct clinical assessment to enable prediction of outcomes and healthcare needs essential for tailoring interventions (eg, rehabilitation, orthopaedic surgery and nutritional supplements) and the projected healthcare utilisation

Systematic review of the relationship between habitual physical activity and motor capacity in children with cerebral palsy

Habitual physical activity (HPA) has many benefits for general health. Motor capacity in children with cerebral palsy (CP) can impact on their HPA. This study aimed to systematically review the available literature on the relationship between HPA and motor capacity in children with CP aged 3-12 years for all gross motor functional abilities (GMFCS I-V) compared to typically developing children. Five electronic databases (Pubmed, Cochrane, Embase, Cinahl and Web of Science from 1989 to November, 2013) were searched using keywords "children with cerebral palsy", "physical activity", "motor capacity" and "motor function" including their synonyms and MesH terms. Studies were included if they (i) were conducted in children with CP aged between 3 and 12 years, (ii) assessed HPA or time spent sedentary, (iii) assessed motor capacity in order to evaluate the relationship between HPA and motor capacity. All articles retrieved were reviewed by two independent reviewers and discussed until they reached consensus. Study quality of reporting was evaluated using the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) criteria. Search results identified 864 articles but after review of the title and abstract only 21 articles warranted closer consideration. Ten articles met the strict inclusion criteria as nine articles did not assess HPA and two were conference abstracts. Study quality assessment (STROBE) found nine articles were good quality (=60%) and one was poor quality (55.9%). Participants were mean age 8.4 (SD=2.1) years (range 2-17 years) and included children at all GMFCS levels (3 studies), while seven studies only recruited GMFCS level I-III. HPA measurements were either subjective (Activity Scale for Kids, Dutch Questionnaire of Participation in physical activity and assessment of participation in physical education at school and regular physical activity in leisure time) or objective (StepWatch® and ActiGraph®7164). Nine studies found that motor capacity was directly associated with HPA, HPA in children with CP with high functional level (GMFCS I) was higher than those with lower functional levels (GMFCS III-V); while one study reported no relationship between HPA and GMFCS level (HPA was measured by questionnaire, a potential limitation). Further studies are required to further elucidate HPA levels (active, sedentary behavior) according to objective motor capacity measures, age and gender to inform healthy lifestyle behavior (active/sedentary) in children with CP. © 2014 Elsevier Ltd

Sedentary behavior in children with cerebral palsy between 1.5 and 12 years: a longitudinal study

Purpose: To determine longitudinal change in sedentary behavior in children with cerebral palsy (CP) from 1.5 to 12 years. Methods: Ninety-one children, Gross Motor Function Classification System (GMFCS) levels I to III, who participated in a large longitudinal cohort study were participants. Longitudinal change was analyzed in objectively measured sedentary behavior and associations with sex, body mass index Z score, and socioeconomic status. Moderate-vigorous intensity physical activity (MVPA) was estimated at 8 to 12 years. Results: Average sedentary minutes/day peaked at 4 years in children at GMFCS I and 5 years in children at GMFCS II to III, then plateaued. Male sex was associated with increased sedentary behavior. At 8 to 12 years, children at GMFCS I, II, and III accumulated on average 54, 47, and 14 minutes/day, respectively, of MVPA. Conclusions: When measured to 12 years, sedentary behavior peaks by 5 years for children with CP who are walking with differences in trajectory according to GMFCS

Validation of accelerometer cut-points in children with cerebral palsy aged 4 to 5 years

Purpose: To derive and validate triaxial accelerometer cut-points in children with cerebral palsy (CP) and compare these with previously established cut-points in children with typical development. Methods: Eighty-four children with CP aged 4 to 5 years wore the ActiGraph during a play-based gross motor function measure assessment that was video-taped for direct observation. Receiver operating characteristic and Bland-Altman plots were used for analyses. Results: The ActiGraph had good classification accuracy in Gross Motor Function Classification System (GMFCS) levels III and V and fair classification accuracy in GMFCS levels I, II, and IV. These results support the use of the previously established cut-points for sedentary time of 820 counts per minute in children with CP aged 4 to 5 years across all functional abilities. Conclusions: The cut-point provides an objective measure of sedentary and active time in children with CP. The cut-point is applicable to group data but not for individual children

Longitudinal physical activity and sedentary behaviour in preschool-aged children with cerebral palsy across all functional levels

Aim: To investigate longitudinal changes of habitual physical activity (HPA) and sedentary time in children with cerebral palsy (CP) aged 1 year 6 months to 5 years across all functional abilities. Method: At study entry, 95 children (62 males, 33 females) were classified using the Gross Motor Function Classification System (GMFCS) at levels I (50), II (9), III (16), IV (6), and V (14). Physical activity was recorded on a total of 159 occasions at four possible time points: 1 year 6 months to 2 years; 2 years 6 months to 3 years; 4 years; and 5 years using ActiGraph for 3 days. Mixed-effects regression models were used for analyses. Results: Participants classified at GMFCS levels I and II had stable HPA as they aged. HPA significantly decreased at 5 years in children classified at GMFCS levels III to V. Sedentary time significantly increased at 4 years and 5 years in all participants. Annual HPA significantly reduced in children classified at GMFCS levels III to V (-123 counts/min, 95% confidence interval [CI] -206 to -40) while annual sedentary time significantly increased in all participants (GMFCS levels I-II: 2.4%, 95% CI 0.7-4.1; GMFCS levels III-V: 6.9%, 95% CI 4.6-9.2). Interpretation: Children with CP at all GMFCS levels should be encouraged to be physically active from early childhood as HPA levels start to decline from 4 years. Breaks in sedentary time are required for all children with CP from the age of 3 years

Relationship between habitual physical activity, motor capacity, and capability in children with cerebral palsy aged 4–5 years across all functional abilities

Background: Children with cerebral palsy (CP) have lower habitual physical activity (HPA) than their typically developing peers. There are limited studies of HPA in young children with CP under the age of 5 years. Objective: To investigate the relationships between HPA, sedentary time, motor capacity and capability in children with CP aged 4–5 years. Methods: Sixty-seven participants were classified using Gross Motor Function Classification System(GMFCS), assessed for motor capacity using Gross Motor Function Measure (GMFM) and wore accelerometers for three days to measure HPA and sedentary time. Motor capability was assessed using parent-reported Pediatric Evaluation of Disability Inventory (PEDI) functional skills of mobility domain. Mixed-effects regression models were used for analyses. Results: GMFM was positively associated with HPA (mean difference (MD) = 19.6 counts/min; 95%CI = 16.6 to 22.7, p < 0.001) and negatively associated with sedentary time (MD = −0.6%; 95%CI = −0.7 to −0.5, p < 0.001). The PEDI was also positively associated with HPA (MD = 16.0 counts/min; 95%CI = 13.1 to 18.8, p < 0.001) and negatively associated with sedentary time (MD = −0.5%; 95%CI = −0.6 to −0.4, p < 0.001). After stratification for ambulatory status, GMFM and PEDI were associated with HPA and sedentary time in ambulant participants but not in non-ambulant participants. Conclusions: Gross motor capacity and motor capability are related to HPA and sedentary time in ambulant children with CP aged 4–5 years