Physical activity participation and physical aggression in children and adolescents: A systematic review and meta-analysis

BackgroundAggressive behaviour is a substantial behavioural problem in children and adolescents. This review systematically summarises the current evidence on the relationship between physical activity participation and aggressive behaviour and quantifies the effects of physical activity interventions on aggression in children and adolescents.MethodsStudies were identified through a search of five electronic databases (PsycINFO, SPORTDiscus, MEDLINE, CINAHL and Web of Science) with combinations of three groups of keywords. Two independent reviewers screened and extracted data from the individual studies. The reporting quality and publication bias were assessed. The relationship between physical activity participation and aggressive behaviour was systematically summarized. Data (effect sizes) were pooled to investigate the effects of physical activity interventions on aggressive behaviour. A moderator meta-analysis was performed to identify potential moderators of the effects of physical activity interventions on aggressive behaviour.ResultsNineteen studies met the inclusion criteria. The relationship between physical activity participation and aggressive behaviour was mixed. A significant reduction in aggressive behaviour was observed after physical activity interventions (k = 8, SMD = −0.53, 95% CI [−0.27, −0.79], p < 0.001). The moderator meta-analysis showed that physical activity interventions involving team-based physical activity had greater effects than those involving individual-based physical activity (β = 0.42, SE = 0.18, p = 0.02). In addition, interventions involving physical activity alone were more effective in reducing aggressive behaviour than those that combined physical activity with other activities such as a philosophy course (β = −0.63, SE = 0.11, p < 0.001).ConclusionThe current meta-analysis presents evidence for the effect of physical activity interventions on aggressive behaviour in children and adolescents. Physical activity–only interventions involving team-based physical activity might be used for preventing or reducing aggressive behaviour in children and adolescents. Possible mechanisms, methodological strengths and weaknesses, implications, and suggestions for future studies were discussed.     

Physical activity and motor skills in children: A differentiated approach

Being physically active plays an essential role in a child's physical development. While there is ample evidence for a positive association between physical activity (PA) and motor skills in children, the question of how PA should be implemented to optimally foster motor skill proficiency is less clear. To address this gap, the current longitudinal study compared four groups of children with different patterns of leisure-time PA engagement—namely children engaging in either structured PA, unstructured PA, a combination of structured and unstructured PA, or no PA at all—with respect to their gross and fine motor skill development. Results of repeated measures mixed modeling procedures revealed that engaging in structured PA—either exclusively or in combination with unstructured PA—is beneficial for children's gross motor development, whereas engaging in unstructured PA lacks such effectiveness. As to fine motor skills, a beneficial tendency of structured PA was observed as well. Hence, PA seems to be beneficial for motor skill development particularly when implemented in a formal setting with guided opportunities for practice. In conclusion, regularly engaging in structured PA constitutes a promising way to promote motor skills and support motor development over the long term.     

A longitudinal analysis of reciprocal relationships between actual and perceived motor competencies and physical self-concept in primary-school age children

Physical self-concept (PSC) and motor competencies are important factors in view of the development of a physically active lifestyle. There are research gaps regarding longitudinal studies of these relationships. This article presents findings of a longitudinal study (n = 200; 58% girls, M = 8.84 ± 0.63 years) at three primary schools. The aim of this study was to analyze the relationship between actual motor competencies (AMC) and perceived motor competencies (PMC) and PSC. Therefore, manifest path models in cross-lagged design were performed. Results show that correlations between PMC and AMC increased over time and were stronger in object control than in locomotor. Effects of AMC on PSC were more strongly mediated by PMC in object control than in locomotor. To promote physical activity, developing strategies should be aimed at the acquisition of AMC, particularly in object control, and PMC, especially in locomotor, during childhood.     

Personality and physical activity: A systematic review and meta-analysis

Whether personality determines physical activity or its outcomes is relevant for theory and public health but has been understudied. We estimated the population correlations between Big-Five personality factors and physical activity and examined whether they varied according to sample characteristics and study features. Database searches were conducted according to PRISMA guidelines, for articles published in the English language prior to November 1st, 2013. Sixty-four studies including a total of 88,400 participants yielded effects (k) for Extraversion (88), Neuroticism (82), Conscientiousness (69), Openness (51) and Agreeableness (52). Significant mean r was found for Extraversion (r = .1076), Neuroticism (r = −.0710), Conscientiousness (r = .1037) and Openness (r = .0344), but not Agreeableness (r = .0020). Effects were moderately heterogeneous (I² range = 44–65%) and varied by sample characteristics (e.g., age, gender, or clinical status) and/or study features (e.g., measure quality or item format). This analysis expands results of previous reviews and provides new support for a relationship between physical activity and Openness. Future studies should use better measures of physical activity and prospective designs, adjust for statistical artifacts, and consider advances in the conceptualization of personality.     

Global self-esteem,perceived athletic competence,and physical activity in children: A longitudinal cohort study

ObjectivesThe Exercise and Self-Esteem Model is used as a theoretical framework to describe associations between global self-esteem and physical activity, mediated by perceived athletic competence. We know little about how these associations develop over time in elementary school children. We examined the change in, and associations between, global self-esteem, perceived athletic competence, and moderate-to-vigorous physical activity (MVPA) in children from kindergarten to grade 4. We also investigated if this change and these associations were different for boys and girls.DesignA prospective longitudinal cohort-sequential design that consisted of two cohorts of children.MethodChildren in cohort I were followed from kindergarten to grade 2, and children in cohort II were followed from grade 2 to grade 4. Global self-esteem and perceived athletic competence were measured with the Self-Perception Profile for Children (SPPC) (n = 292; 148 boys), while MVPA was measured with proxy-reports for physical activity filled in by parents (n = 184; 88 boys).ResultsGlobal self-esteem, perceived athletic competence, and MVPA remained stable. Global self-esteem was the same in boys and girls, while boys reported higher levels of perceived athletic competence and were more physically active than girls. The change in global self-esteem was significantly associated with perceived athletic competence and MVPA in girls, but not in boys.ConclusionThere are few developmental changes in global self-esteem, perceived athletic competence, and MVPA from kindergarten to grade 4. The change in global self-esteem was associated with perceived athletic competence and MVPA in girls, but not in boys.     

The effect of augmented feedback on the performance and learning of gross motor and sport-specific skills: A systematic review

BackgroundAugmented feedback is often provided by coaches and practitioners as a method to enhance the performance of athletes and learners. When implementing a feedback intervention, it is important to assess the expertise of the learner and the complexity of the skill, to ensure an appropriate feedback modality, frequency, and timing is provided. However, researchers have a limited understanding of how these variables interact to influence the performance and learning of gross motor and sport-specific skills.ObjectivesThe purpose of this systematic review was to examine the effects of augmented feedback on the performance and learning of gross motor and sport-specific skills in an adult population.MethodsA systematic literature search was conducted on electronic databases, PubMed, Web of Science and PsycINFO, from inception to March 2020, with a revised search completed to January 2022. The search terms used were related to augmented feedback and motor performance and learning. Studies were included if they consisted of a randomised control trial with pre- and retention-testing measures, which investigated an AF intervention on a gross motor and/or sport-specific skill in a healthy adult population. Risk of bias was assessed using the revised Cochrane risk-of-bias tool for randomised trials (RoB2).ResultsTwenty-four studies were included, with a total of 895 participants. Most studies reported a learning improvement following the provision of AF. One study documented a decrease in performance, and two studies reported no learning improvement Conflicting evidence was reported regarding which feedback frequency, timing, and duration was most appropriate. Furthermore, the inconsistency in methodological designs (control group types; timing of retention-tests; lack of retention tests) limited the comparisons that could be made between studies. Eighteen studies reported a high risk of bias, with the remaining six presenting some concerns.ConclusionAlthough studies have shown positive effects of AF on the performance and learning of gross motor and sport-specific skills, the majority are at a high risk of bias. Additionally, studies lacked standardisation in methodology, and results surrounding features of AF interventions were conflicting. Despite the conceptually sound rationale, further research is required to provide stronger evidence and a more robust understanding to better inform practitioners on how AF truly impacts the performance and learning of gross motor and sport-specific skills.RegistrationThis systematic review was registered on the Open Science Framework (https://osf.io/mrxzg) (10.17605/OSF.IO/MRXZG)     

The interplay of actual and perceived physical fitness in children: Effects on motivation and physical activity

From a sport and exercise psychology perspective, both the actual and perceived physical fitness become important for motivation towards physical activity and persistent physical activity in children no later than middle childhood (Stodden et al., 2008). To date, the effects of actual and perceived physical fitness have been investigated from a variable-centered approach (Jekauc et al., 2017). However, within this approach, the accuracy of the perceived physical fitness remains unconsidered. As actual and perceived physical fitness levels can be divergent, especially in children due to greater egocentricity and hence less comparison processes (Harter, 2006), also the accuracy of perceived physical fitness should be considered.In total, 462 children from 3rd and, approximately nine months later, from 4th grade participated in this study (M_age = 8.79 years). Third-grade students were assessed on their actual physical fitness, perceived physical fitness, and physical activity. In fourth grade, students were asked to fill out questionnaires that assess motivational regulations and physical activity. Polynomial regressions with response surface analyses were conducted to analyze main effects and accuracy effects of actual and perceived physical fitness on motivation and physical activity. Analyses revealed that children with higher actual and perceived physical fitness levels show greater autonomous motivation, higher current physical activity levels and higher physical activity levels nine months later. In addition, children who perceive their physical fitness more accurately show more current physical activity. Results indicate that the interplay between actual and perceived physical fitness does not only have an effect on physical activity but also on autonomous motivation, which is a predictor for long-term physical activity. Therefore, intervention should focus on the promotion of actual and perceived physical fitness. In addition, the ability to accurately assess fitness should be promoted in this age group.     

Effects of a single bout of moderate-to-vigorous physical activity on executive functions in children with attention-deficit/hyperactivity disorder: A systematic review and meta-analysis

ObjectivesThe aim of this study was to systematically review the literature investigating the acute effects of moderate-to-vigorous physical activity (MVPA) on executive functions (EFs) in children with attention-deficit/hyperactivity disorder (ADHD) and perform a meta-analysis of the effects of MVPA on task components that require lower and higher EF demand in this population.MethodsThe systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Six electronic databases, i.e., PubMed, Scopus, Web of Science, Embase, SPORTDiscus, and Education Resources Information Center (ERIC), were searched for eligible studies. Random-effects weights were used to pool the effect sizes. Publication bias was assessed by Egger’s regression test and Rosenthal’s fail-safe N. This study is registered on PROSPERO, number CRD42020184082.ResultsThe electronic database search yielded 12 studies, which met the inclusion criteria, comprising a total of 375 participants. Eleven studies with data from 275 participants were included in the meta-analysis to examine the acute effects of MVPA on tasks with lower and higher EF demand. A single bout of MVPA had a small positive effect on tasks with lower (n = 10, g = 0.32, 95% CI = 0.123–0.517) and higher (n = 10, g = 0.25, 95% CI = 0.13–0.371) EF demand. No publication bias was found.ConclusionsA single bout of MVPA may have a general facilitative effect on cognition, indicating that acute MVPA may be a transient nonpharmacological adjunctive treatment for childhood ADHD.     

The impact of sport and physical activity on the well-being of combat veterans: A systematic review

ObjectivesThis review examined the potential impact of sport and physical activity upon the subjective and psychological well-being of combat veterans in the aftermath of physical or psychological combat trauma.DesignA systematic review was conducted. The question guiding this review was ‘what is the impact of sport and physical activity on the well-being of combat veterans?’MethodsKey databases were searched for articles relating to the use of sport and/or physical activity in supporting combat veterans. 11 studies were identified as relevant for inclusion. Data from these studies were extracted by means of a directed content analysis, the results of which were reported in a narrative synthesis.ResultsSport and physical activity enhances subjective well-being in veterans through active coping and doing things again, PTSD symptom reduction, positive affective experience, activity in nature/ecotherapy, and quality of life. Impact on psychological well-being includes determination and inner strength, focus on ability and broadening of horizons, identity and self-concept, activity in nature/ecotherapy, sense of achievement/accomplishment, and social well-being. Participating in sport and/or physical activity can also enhance motivation for living.ConclusionsThe review advances knowledge by producing a synthesis of evidence that highlights the value of sport and physical activity for supporting the well-being and rehabilitation of disabled combat veterans and combat veterans diagnosed with Post-Traumatic Stress Disorder. It also develops knowledge by identifying the type of sports and physical activities used to promote well-being, offering the first definition of combat veterans in the sport literature, taking a critical approach, and highlighting the under researched role of nature-based physical activity.     

Momentary associations between stress and physical activity among children using ecological momentary assessment

Chronic and acute stress may have a detrimental effect on children's physical activity. Research on stress as a predictor of children's physical activity has mostly focused on stress between children, rather than how children's within-day variation in stress may predict physical activity. The current study assessed the within- and between-effects of stress on subsequent physical activity in three different time windows using ecological momentary assessment (EMA) and accelerometry. Children (N = 190; M_{Baseline Age} = 10.1 ± 0.9, 53% female, 56% self-identified Hispanic/Latino) completed six semi-annual assessment bursts across three years. During each burst, participants responded to up to seven (weekend) or three (weekday) randomly prompted EMA surveys on smartphones for seven days and wore a waist-worn accelerometer. Multi-level structural equation modeling examined within- and between-subjects effects of stress as a predictor of children's subsequent moderate-to-vigorous physical activity (MVPA) in the 15, 30, and 60 min following the EMA prompt. Latent variables were created for within- and between-subjects stress were comprised of three EMA stress items. Higher than average levels of stress (within-subjects) significantly predicted lower MVPA in the subsequent 15, 30 and 60 min (ps < .05). Between-subjects stress was not significantly associated with subsequent MVPA (ps > .05). Results indicate that elevated momentary stress predicts less subsequent MVPA. These findings suggest that within-day fluctuations in stress may be a barrier for children engaging in physical activity. Childhood physical activity promotion and interventions should consider the role of children's stress, aim to reduce the stress children experience throughout the day, and incorporate stress coping strategies.     

Physical activity and posttraumatic growth: A systematic review of quantitative and qualitative studies

ObjectivesThis systematic review aimed to examine the relationships between physical activity and posttraumatic growth (PTG) following a highly stressful life event.DesignA systematic review was conducted to identify eligible articles. A meta-analysis was conducted for quantitative studies and a meta-ethnographic synthesis was conducted for qualitative studies.MethodAfter systematic searches of five databases and literature screening, 20 quantitative studies and 12 qualitative studies were included in the final review. A meta-analysis of 14 quantitative studies was conducted to examine association between leisure-time physical activity and PTG. A meta-ethnographic synthesis of 10 qualitative studies was conducted to examine the relationship between physical activity and the experience of PTG.ResultsThe meta-analysis revealed a positive, yet small, association between leisure-time physical activity and PTG (average correlation = 0.120; 95% confidence interval: 0.071 to 0.168; p < 0.001). The effect sizes did not differ by measurements of PTG and participants’ age and gender but were smaller in studies with a binary variable of physical activity, a sample of participants with moderate or advanced diseases, and a longer period since the stressful event. The meta-ethnographic synthesis identified potential processes linking physical activity and PTG, including perceptions of self, social experiences, philosophical re-evaluation, and health effects.ConclusionsThis review suggest physical activity is a behavioral factor that may facilitate PTG. It highlights methodological considerations for further research.     

Effects of school-based interventions on motivation towards physical activity in children and adolescents: A systematic review and meta-analysis

IntroductionAssuming that motivation is the key to initiate and sustain beneficial health behaviors, the aim of this systematic review was to analyze the effects of school-based physical activity interventions on a variety of motivational outcomes towards PA in school-aged children and adolescents.MethodsA comprehensive literature search was carried out in six electronic databases to identify randomized controlled trials and quasi-experimental trials examining the effects of PA interventions implemented during the regular school day, e.g., during physical education lessons or lunch breaks. Primary outcomes of interest were students' motivation, basic psychological needs, goal orientation, enjoyment, and motivational teaching climate in physical education. Meta-analyses were conducted for these outcomes using Comprehensive Meta-analysis software. Secondarily, intervention effects on students' PA behaviors were examined and the findings summarized narratively. Methodological quality of studies was evaluated using the Cochrane Collaboration's tool for assessing risk of bias for randomized trials; certainty of evidence on outcome level was evaluated using the GRADE approach.ResultsIn total, 57 studies carried out between 2001 and 2018 were included in this review. Sixteen individual meta-analyses were performed and revealed significant pooled effects for the outcomes enjoyment (g = 0.310), perceived autonomy (g = 0.152), identified regulation (g = 0.378), intrinsic motivation (g = 0.419), self-determination index (g = 0.672), task/mastery climate (g = 0.254), ego/performance climate (g = −0.438), autonomy supportive climate (g = 0.262), task goal orientation (g = 1.370), ego goal orientation (g = −0.188). The narrative data synthesis indicated an increase in students' PA behavior. The overall risk of bias was high across all studies and certainty of evidence of meta-analyzed outcomes ranged from very low to moderate. Moderate certainty of evidence was found for ego/performance climate and ego goal orientation. Conclusions: Meta-analyses suggest that school-based PA interventions may be effective in increasing a variety of motivational outcomes. However, the certainty of evidence was limited in the majority of outcomes. Further research is needed to identify effective intervention strategies that increase students’ motivation towards PA.     

Biographic and behavioral factors are associated with music-related motor skills in children pianists

This study aimed to identify biographical and behavioral factors associated with children pianists’ motor skills using an objective assessment of a music-relevant motor task. Motor skills at the piano were assessed in 30 children pianists by measuring temporal unevenness in standardized scale playing using musical instrument digital interface (MIDI)-based scale analysis. Questionnaires were used to collect detailed information about the amount of time playing the piano, practice characteristics, attitudes toward music and practice, and the environment of music and practice. Associations between performance values and variables from the questionnaire were investigated using multivariable linear regression. A higher number of years playing the piano, more frequent parental involvement in the child’s practice, more frequent practice of technical exercises, and greater enjoyment of practice and of the visual arts were associated with better motor performance. In addition to cumulative experience and aspects of practice, extrinsic motivational factors (e.g., parental interest) and intrinsic motivational factors (e.g., an artistic disposition) were associated with better performance on a musically-relevant motor task in children pianists.     

A systematic review of the within-person association between physical activity and affect in children's and adolescents' daily lives

BackgroundIt is important to understand the relationship between physical activity and affect because affect experienced during physical activity and momentary incidental affect may both predict physical activity behaviours. Additionally, affect experienced during physical activity may explain the mental health benefits of participation in physical activity. Utilising ambulatory assessment techniques, researchers can examine the acute within-person association between physical activity and affect in children and adolescents' daily life. The purpose of this study was to systematically review the literature to determine whether there is a within-person association between physical activity and affect in children and adolescents' daily life.MethodsMedline via EBSCOHost, SPORTdiscus, PsychINFO, and Scopus were searched up to March 2020. A narrative synthesis was used to summarize results of the included studies.ResultsTen studies, reporting on nine unique samples, met the inclusion criteria. The strongest evidence identified was for a positive within-person association between physical activity and subsequent positive affect and energy. The findings regarding the within-person association between physical activity and subsequent negative affect and moods were mixed, as were the findings regarding affect predicting subsequent physical activity.ConclusionThere was mixed support for the acute within-person association between physical activity and affect in children and adolescents. Future research should consider factors that may moderate the relationship between physical activity and affect. Additionally, experimental research should examine how manipulations of incidental affect effect physical activity participation in children and adolescents' daily life.Prospero RegistrationCRD42020141649.     

Perspectives of children and adolescents on the perceived determinants of physical activity during recess

Promotion of healthy lifestyles in youth focuses on school-based interventions with the aim to increase physical activity (PA) during school days. Drawing on seventeen focus group discussions from three purposively selected Estonian schools, we explored factors that perceivably affect students’ recess physical activity (RPA). Both inductive and deductive principles of data analysis were used to extract major and subthemes related to factors that inhibit or enhance RPA. Participants identified barriers and facilitators to recess PA as originating mainly from physical and organizational school environment. Also, unsuitable weather was described as a barrier to being active. Additionally, feelings, behavioral and normative beliefs were described as constraining or facilitating RPA. Results highlighted two culture-specific unique perceived determinants of RPA that need to be addressed during the development of school-based interventions to increase PA.     

Physical activity interventions in the school setting: A systematic review

Objectives

To review the effectiveness of school-based interventions with a physical activity component by measuring changes in psychological determinants, physical activity, and health outcomes.

Design

Systematic Review.

Method

We conducted a literature search of school-based controlled studies that involved a physical activity intervention targeting school students. Study design, methodological quality, and effectiveness of interventions on three target levels, ‘health and fitness’ (BMI and motor performance), ‘physical activity’, and ‘psychological determinants’ (knowledge of physical activity effects, self-concept, and attitudes towards physical activity), were analysed. Furthermore, we examined the influence of specific factors (e.g., age and gender) and mediator effects.

Results

The literature search identified 129 studies. The majority of the studies examining motor performance, physical activity, and knowledge of physical activity achieved significant results (69.7%, 56.8% and 87.5%, respectively). Significant effects on self-concept and attitudes were also found but to a smaller extent (in 30% and 43.8% of the studies, respectively). Only a few studies examining BMI (2.7%), physical activity (6.8%), and attitudes towards physical activity (12.5%) revealed negative effects, with better results observed for the control group. Intervention effects were influenced by the students’ age, intervention type, and frequency of the interventions. Self-efficacy was found to mediate the relationship between the program and the students’ physical activity.

Conclusions

Numerous school-based physical activity interventions achieved positive effects on three target levels. Further research is needed to clarify the mediator effects of psychological variables on physical activity and health and to increase our knowledge about the mechanisms that underlie behavioural change.     

Greeting skills: A systematic review of the literature

Individuals with disabilities often demonstrate difficulty in social communication skills such as greetings. Studies have shown that deficits in greetings may negatively affect social interactions and vocational opportunities. Therefore, previous research has evaluated a variety of teaching procedures to increase greetings for individuals with disabilities with varying efficacy. This review of the literature provides an overview of studies to date in which greetings were taught to individuals with intellectual disabilities. A variety of teaching procedures were identified, and implications of those procedures are discussed. Results suggest that multiple teaching procedures may be effective; however, component analyses, further replication, and modified generalization procedures are necessary. Implications for future researchers include identifying a technological definition of greetings and evaluating effective teaching procedures and generalization strategies. Implications for practitioners include teaching one greeting type at a time, limiting the number of social skills taught simultaneously, identification of effective teaching procedures and generalization considerations.     

Efficacy of physical activity interventions on psychological outcomes in refugee,asylum seeker and migrant populations: A systematic review and meta-analysis

ObjectivesThe role of physical activity (PA) in the promotion of mental wellbeing and prevention of psychological disorders in population groups at increased risk for mental health conditions, such as migrant populations, has never been systematically investigated.MethodsWe conducted a systematic review and meta-analysis according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement. We searched the Cochrane Central Register of Controlled Trials (CENTRAL), Pubmed, Web of Science, SportDiscus. We included randomized (RCTs), controlled clinical trials (CCT), and pre-post intervention studies, that assessed the efficacy of PA interventions in migrants, compared with any types of controls.ResultsWe included 27 studies (4166 participants) (16 RCTs; 2 CCTs; 9 pre-post design) between 1997 and 2020. Meta-analysis showed a significant beneficial effect of PA over control conditions for general functioning (SMD -0.35, 95% CI -0.83 to −0.16; 400 participants), outcome expectancies (SMD -0.78, 95% CI -1.17 to −0.40; 118 participants), self-efficacy/coping (SMD -0.28, 95% CI -0.52 to −0.03; 269 participants), and psychological symptoms (SMD -0.48, 95% CI -0.88 to −0.08; 6 RCTs; 597 participants). Similar findings were produced by pre-post intervention studies (SMD -0.35, 95% CI -0.60 to −0.10; 7 studies; 302 participants).ConclusionsMigrant populations may benefit from PA interventions to improve psychological outcomes. Uncertainty remains about the best approach to promote PA in this population, and future research should consider the complex factors that characterize the migration experience.     

Effects of behaviour change interventions on physical activity in people with spinal cord injury: A systematic review and meta-analysis

ObjectivesThis review investigated the effectiveness of behaviour-change interventions to improve physical activity (PA) participation in individuals with a spinal cord injury. Additionally, the review sought to analyse the change in PA behaviour that might be expected by utilising behaviour change in PA interventions and what specific intervention characteristics, application of behaviour change theories, and behaviour change techniques are most efficacious.MethodsThe protocol was prospectively registered on PROSPERO: CRD42021252744, and the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines were followed in this review. Eight databases were comprehensively searched using a well-defined strategy developed in collaboration with an academic liaison librarian. Randomised, non-randomised controlled, and non-controlled studies were included in this review; however, controlled and non-controlled studies were analysed separately. Studies were included if participants were older than 16 years and had an SCI of any cause, level or severity, regardless of the time since injury. The behaviour change technique taxonomy version 1 was used to code the intervention characteristics for behaviour modification. The combined effects across studies were pooled in a meta-analysis, and the risk of bias was assessed using the Cochrane Risk of Bias 2 tool.ResultsThe search retrieved 10,155 titles and abstracts. After duplicate removal and screening against the eligibility criteria, 23 studies were included. The overall effect estimate of the change in PA participation in the controlled trials post-intervention was medium (d = 0.50, 95% CI = 0.31–0.70) in favour of behaviour-targeted interventions. The mean difference in PA volume between pre- and post-intervention was an increase of 22 minutes per week (95% CI = 5.96–38.90). Interventions that provided practical support (d = 0.81, 95% CI = 0.46–1.16), which were individualised (d = 0.62, 95% CI = 0.34–0.90) and that utilised monitoring (d = 0.59, 95% CI = 0.34–0.83) had a greater effect on change to PA than those that were group-based and did not utilise those specific techniques.ConclusionsInterventions that target behaviour change to increase PA in people with SCI appear effective. Utilising behaviour change frameworks and specific behaviour change techniques augments PA uptake and levels, and interventions aimed at improving PA in people with SCI should incorporate a behaviour modification component. More research is needed on the isolated effect of intervention structure parameters and specific behaviour change techniques.     

Sit-to-stand movement in children: A longitudinal study based on kinematics data

Although the ability to stand from a seated posture is relevant for clinical practice, there are few studies investigating the process of acquisition and refinement of the motor components involved in sit-to-stand movement (STS) in children. Therefore, this longitudinal study aims to describe kinematic characteristics of the STS movement in children from 12 to 18 months, and also to investigate the relationship between changes in STS movement and childrens’ daily-life mobility. Ten healthy children were evaluated at 12,13,14,15 and 18 months of age. A motion analysis system was used to measure total duration of STS movement and angular movements of each joint, and frequencies of successful and unsupported STS were obtained. The Pediatric Evaluation of Disability Inventory was used to assess childrens’ daily-life mobility. Results showed that children tend to increase the frequency of successful trials over the months by reducing the total duration and decreasing peak ankle dorsiflexion and trunk flexion during STS. Children also started to stand up from chair with decreased trunk flexion angle among ages. At the end of the STS, we observed decreases in trunk flexion and knee flexion over age. Furthermore, kinematic characteristics that reflect improvements in STS movement are related to better performance of functional skills and decreased level of assistance provided by the caregiver in daily-life mobility of younger children. However, the strength of these associations decreases from 14 months of age onwards.