The intersection of parent questions, child skills, and activity context in informal science, technology, engineering, and math learning.

Adult verbal input occurs frequently during parent-child interactions. However, few studies have considered how parent language varies across informal STEM (science, technology, engineering, and math) activities. In this study, we examined how open and closed parent questions (a) differed across three STEM activities and (b) related to math, science, and vocabulary knowledge in their preschool-aged children. A total of 173 parents and their preschool children (Mage = 4 years) from lower socioeconomic households were video-recorded participating in three STEM-related activities: (a) a pretend grocery store activity, (b) a bridge-building challenge, and (c) a book read about a science topic. Parent questions were categorized as open or closed according to the presence of key question terms. Results indicate that the three activities elicited different frequencies of parent open and closed questions, with the grocery store activity containing the most open and closed questions. Children's science knowledge was predicted by the frequency and proportion of parent open questions during the book read. These results enhance our understanding of the role of parent questions in young children's language environments in different informal learning contexts.

Effects of physical activity planning interventions on reducing sedentary behavior in parent-child dyads: A randomized controlled trial.

Effects of parent-child dyad interventions on behavior remain unclear. This randomized controlled trial investigated if, compared with a control condition, three types of physical activity (PA) planning interventions (individual "I-for-me," dyadic "we-for-me," and collaborative "we-for-us") would reduce sedentary behavior (SB) time in parents and their children. The study involved 247 dyads comprising parents (aged 29-66) and their children (aged 9-15), randomized into one of the three types of PA planning-intervention arms or the control condition. Mixed models were applied to analyze data from a preregistered trial (NCT02713438) with the outcome of accelerometer-measured SB time, assessed at 1-week and 36-week follow-ups. Although children's SB remained unaffected by the planning interventions, a small reduction of SB time was found among parents in the collaborative (p = .048) and individual (p = .042) planning conditions. The effects were observed at the 1-week follow-up only. While short-term reductions in parents' SB were achieved, these were not sustained long-term. PA planning interventions delivered to parent-child dyads did not substantially reduce children's SB, which may be due to young people's needs of increased independence from their parents.

A sensory signature of unaffected biological parents predicts the risk of autism in their offspring.

AIM: Despite the emphasis on sensory dysfunction phenotypes in the revised diagnostic criteria for autism spectrum disorder (ASD), there has been limited research, particularly in the field of neurobiology, investigating the concordance in sensory features between individuals with ASD and their genetic relatives. Therefore, our objective was to examine whether neurobehavioral sensory patterns could serve as endophenotypic markers for ASD. METHODS: We combined questionnaire- and lab-based sensory evaluations with sensory fMRI measures to examine the patterns of sensory responsivity in 30 clinically diagnosed with ASD, 26 matched controls (CON), and 48 biological parents for both groups (27 parents of individuals with ASD [P-ASD] and 21 for individuals with CON [P-CON]). RESULTS: The ASD and P-ASD groups had higher sensory responsivity and rated sensory stimuli as more unpleasant than the CON and P-CON groups, respectively. They also exhibited greater hemodynamic responses within the sensory cortices. Overlapping activations were observed within these sensory cortices in the ASD and P-ASD groups. Using a machine learning approach with robust prediction models across cohorts, we demonstrated that the sensory profile of biological parents accurately predicted the likelihood of their offspring having ASD, achieving a prediction accuracy of 71.4%. CONCLUSIONS: These findings provide support for the hereditary basis of sensory alterations in ASD and suggest a potential avenue to improve ASD diagnosis by utilizing the sensory signature of biological parents, especially in families with a high risk of ASD. This approach holds promising prospects for early detection, even before the birth of the offspring.

Social skills deficits and self-appraisal biases in children with social anxiety disorder.

Social Anxiety Disorder is highly prevalent among children and leads to poor long-term outcomes if left untreated. Theoretical models of anxiety differ in whether children with Social Anxiety Disorder experience objective social skills deficits, negative self-interpretation biases, or some combination of the two. This pilot study evaluated evidence in support of the "deficit" and "bias" models. Approval was obtained from the ethics committee of a large private university in Cambridge, MA, USA, and data collection was completed in 2015. We recruited 68 parent-child dyads for a study in which anxious children (with Social Anxiety Disorder) and non-anxious children underwent a child-adapted version of the Trier Social Stress Test. Children were aged 8-14, 67.6% male, and self-identified as 54.4% White, 7.4% Black, 4.4% Latinx, 13.2% Asian, 14.7% multiethnic, and 5.9% "other" or no response. Performance ratings were obtained from children, their parents, and external observers. We found evidence of both specific social skills deficits and self-appraisal biases in anxious children. Anxious children struggled with signs of physical discomfort but not with actual speech content. Although children were generally able to accurately evaluate their social performance, older anxious children were most self-critical. Parents were similarly accurate in appraisals of their children's social performance. Anxious children responded favorably to positive feedback with improved self-evaluations of performance and decreased anxiety. Findings suggest that a comprehensive "integrated" theoretical model of Social Anxiety Disorder should include both skills deficits and self-appraisal biases.

Opportunities for understanding the COVID-19 pandemic and child health in the United States: the Environmental influences on Child Health Outcomes (ECHO) program.

Objective: Ongoing pediatric cohort studies offer opportunities to investigate the impact of the COVID-19 pandemic on children's health. With well-characterized data from tens of thousands of US children, the Environmental influences on Child Health Outcomes (ECHO) Program offers such an opportunity. Methods: ECHO enrolled children and their caregivers from community- and clinic-based pediatric cohort studies. Extant data from each of the cohorts were pooled and harmonized. In 2019, cohorts began collecting data under a common protocol, and data collection is ongoing with a focus on early life environmental exposures and five child health domains: birth outcomes, neurodevelopment, obesity, respiratory, and positive health. In April of 2020, ECHO began collecting a questionnaire designed to assess COVID-19 infection and the pandemic's impact on families. We describe and summarize the characteristics of children who participated in the ECHO Program during the COVID-19 pandemic and novel opportunities for scientific advancement. Results: This sample (n = 13,725) was diverse by child age (31% early childhood, 41% middle childhood, and 16% adolescence up to age 21), sex (49% female), race (64% White, 15% Black, 3% Asian, 2% American Indian or Alaska Native, <1% Native Hawaiian or Pacific Islander, 10% Multiple race and 2% Other race), Hispanic ethnicity (22% Hispanic), and were similarly distributed across the four United States Census regions and Puerto Rico. Conclusion: ECHO data collected during the pandemic can be used to conduct solution-oriented research to inform the development of programs and policies to support child health during the pandemic and in the post-pandemic era.

Body Composition in Fussy-Eating Children, with and without Neurodevelopmental Disorders, and Their Parents, Following a Taste Education Intervention.

Fussy eaters may have an increased risk of becoming overweight or obese as adolescents, with fussy eating and weight status also correlating with neurodevelopmental disorders (NDs) such as autism spectrum disorder (ASD) and attention deficit/hyperactivity disorder (ADHD). Further, maternal and children's weight status relationships are well-established. In this study, we analyzed the body composition of parent-child dyads using bioelectrical impedance analysis (BIA). Fifty-one children aged 8-12 years, with an ND (n = 18) and without (n = 33), and their parents, participated in a 7-week food-based Taste Education intervention with 6-month follow-up. The paired t-test was used to compare differences in body composition based on children's ND status. In logistic regression analysis, odds of children being in the overweight/obese or overfat/obese categories increased by a factor of 9.1 and 10.6, respectively, when having NDs, adjusting for parents' BMI (body mass index) or fat percentage (FAT%). Children with NDs and their parents had significantly higher mean BMI-SDS (BMI standard deviation score) and FAT% at pre-intervention than children without NDs and their parents. Mean BMI-SDS and FAT% lowered significantly between time points for children with NDs and their parents but not for children without NDs or their parents. The findings underline the need for additional exploration into the relationships between children's and parents' body composition based on children's ND status.

Posttraumatic stress disorder symptoms among parents and adolescents following Typhoon Lekima: Examination of the mother-daughter sex matching effect.

This study aimed to examine the same-sex matching effect of posttraumatic stress disorder (PTSD) symptoms from parents to children and the mediating role of children' sense of security and catastrophization. Longitudinal data from 447 parent-child dyads were acquired using self-report scales. Parents (77.0% mothers; Mage = 40.15 years old) reported their PTSD symptoms 3 months after Super Typhoon Lekima, and children (55.9% girls; Mage = 13.40 years old) reported their PTSD symptoms, sense of security, and catastrophization 3 months and 15 months after the typhoon. Results showed that intrusion in mothers predicated intrusion, avoidance, and hyperarousal symptoms in daughters, while avoidance and hyperarousal in mothers predicted the same symptoms in daughters. This was not observed in any other parent-child dyads. Moreover, mothers' intrusion positively predicted daughters' PTSD symptoms via daughters' sense of security and then catastrophization, while mothers' hyperarousal showed the opposite prediction. These findings suggest that a same-sex matching effect occurs from mothers to daughters in terms of intrusion, avoidance, and hyperarousal symptoms of PTSD. Thus, clinical interventions that target daughters' PTSD symptoms should also consider mothers' intrusion and avoidance symptoms. Moreover, it may be possible to develop interventions to improve daughters' sense of security.

Stress, anxiety, emotion regulation and social support in parent-child dyads prior to and during the onset of the COVID-19 pandemic.

In March 2020, and in order to assess the impact of the COVID-19 pandemic on stress and mental health in parent-child dyads using pre-pandemic measures, we recontacted participants from a 2019 study. A total of 136 dyads of Canadian parents (77% mothers, mean age = 44.48 years/old) and children (63% girls, 77% aged 10-12 years/old and 23% aged 15-17 years/old) completed self-report measures of perceived stress, anxiety (state/sensitivity) and emotion regulation strategies (cognitive reappraisal/expressive suppression). Children additionally completed measures of co-rumination and perceived social support from friends, parents, and teachers. Results revealed a significant increase in parents' stress and state anxiety during the pandemic compared to before, but not in their children. Dyads' anxiety sensitivity remained unchanged, as well as parents' use of cognitive reappraisal and expressive suppression. Children showed similar use of cognitive reappraisal, but less expressive suppression and co-rumination during the pandemic compared to before. Children reported similar perceived social support from all sources over time. Finally, parental and children scores were not significantly correlated at either time. These results suggest that during the onset of the COVID-19 pandemic, parents and children responded differently in terms of stress, anxiety, and emotion regulation strategies.

Parent-child physiological concordance predicts stronger observational fear learning in children with a less secure relationship with their parent.

Observational fear learning is common in children as they learn to fear by observing their parents. Although adaptive, it can also contribute to the development of fear-related psychopathologies such as anxiety disorders. Therefore, it is important to identify and study the factors that modulate children's sensitivity to observational fear learning. For instance, observational fear learning can be facilitated by the synchronization of biological systems between two people. In parent-child dyads, physiological concordance is important and varies according to the attachment relationship, among others. We investigated the joint effect of parent-child physiological concordance and attachment on observational fear learning in children. A total of 84 parent-child dyads participated in this study. Parents were filmed while exposed to a fear-conditioning protocol, where one stimulus was associated with a shock (CS+) and the other was not (CS-). This recording was then shown to the children (observational learning). Thereafter, both stimuli (CS+ and CS-) were presented to the children without any shock (direct expression test). For both the parent and child, skin conductance activity was recorded throughout the entire procedure. We measured physiological concordance between the parent's phasic skin conductance signal during conditioning and the child's signal during the observational learning stage. Children showing stronger concordance and a less secure relationship with their parent exhibited higher levels of fear to the CS+, as indicated by a heightened skin conductance response during the direct expression test. Thus, when children have an insecure relationship with their parent, strong physiological concordance may increase their sensitivity to observational fear learning.

Efficacy of a peer-based in-home education program in improving social-emotional outcomes of parents and children.

Significant disparities in education and social-emotional outcomes exist between racial/ethnic groups, particularly impacting children growing up in impoverished environments. Home visitation intervention programs, such as the Home Instruction for Parents of Preschool Youngsters (HIPPY), have been used for decades to improve academic readiness in these vulnerable preschool-aged children. Although the benefits of HIPPY on academic readiness and performance are well-documented, there has been no examination of social-emotional benefits to participating parent-child dyads. This study followed a HIPPY cohort over the course of 1 year to evaluate change in maternal and child social-emotional and behavioral functioning. Program participants demonstrated reduced parental stress and depression and increased parental social connection as well as reduced child externalizing behaviors and improved child adaptive functioning over the course of the program, even in the context of the COVID-19 pandemic and associated lockdown. These data highlight the additional benefits of early home-based academic intervention programs.

Las significativas disparidades en educación y resultados socioemocionales existen entre grupos raciales/étnicos, ejerciendo particularmente un impacto en los niños que crecen en ambientes empobrecidos. Los programas de intervención de visitas a casa, tales como la Instrucción en el Hogar para Padres y Niños Pequeños en Edad Prescolar (HIPPY), han sido utilizados por décadas para mejorar la preparación académica en estos niños de edad prescolar vulnerables. A pesar de que los beneficios de HIPPY en cuanto a preparación y rendimiento académicos están bien documentados, no se ha dado una revisión de los beneficios socioemocionales para las díadas progenitor-niño que participan. Este estudio le dio seguimiento a un grupo de HIPPY a lo largo del curso de un año para evaluar el cambio en el funcionamiento socioemocional y de comportamiento materno y en el niño. Los participantes en el programa demostraron un reducido nivel de estrés y depresión en progenitores y un aumento en la conexión social de progenitores, así como niveles reducidos de comportamiento externalizantes en el niño y un incremento en el funcionamiento de adaptación del niño a lo largo del curso del programa, aun dentro del contexto de la pandemia del COVID-19 y el aislamiento que con ella se asocia. Estos datos subrayan los beneficios adicionales de programas tempranos de intervención académica en casa.

Des inégalités importantes dans l'éducation et les résultats socio-émotionnels existent entre les groupes raciaux/ethniques, ce qui impacte particulièrement les enfants grandissant dans des milieux appauvris. Des programmes d'intervention de visite à domicile, comme le programme d'Instruction à Domicile de Parents de Jeunes Enfants d'Age Préscolaire (abrégé HIPPY en anglais), ont été utilisés depuis des dizaines d'années afin d'améliorer la préparation académique de ces enfants vulnérables d'âge préscolaire. Bien que les bénéfices du programme HIPPY sur la préparation académique et la performance académique soit bien documentée, les bénéfices socio-émotionnels de la participation des dyades parent-enfant n'ont jamais été examinés. Cette étude a donc suivi une cohorte HIPPY au cours d'une année afin d'évaluer le changement dans le fonctionnement émotionnel et comportemental maternel et de l'enfant. Les participantes ou participants au programme ont fait preuve d'une réduction du stress parental et de la dépression et de plus de lien social parental ainsi qu'une réduction de comportements d'externalisation de l'enfant et d'un fonctionnement adaptatif de l'enfant amélioré au cours du programme, même dans le contexte de la pandémie du covid-19 et du confinement. Ces données mettent en évidence les bénéfices supplémentaires des programmes d'intervention académique précoce à domicile.

Daily Discrimination and Affect in Latinx Adolescent-Parent Dyads Residing in Northeast United States.

In this 14-day study, we tested whether Latinx adolescents' (Mage = 12.76 years, 52% female; 52% U.S. born; N = 21) and parents' (95% female; 24% U.S. born) daily discrimination experiences were associated with their own and other's daily affective states. Results indicated that on days when adolescents reported discrimination, they reported higher negative affect and marginally lower positive affect and, interestingly, parents reported higher positive affect. On average (i.e., across the 2-week period), adolescents' discrimination was associated with higher adolescent negative affect and lower parent positive affect. Together, findings suggest that Latinx adolescents' discrimination experiences are linked to their own affective states and their parents'. Results underscore how discrimination is linked to the affective states present in family contexts.

Parent Motivational Climate, Sport Enrollment Motives, and Young Athlete Commitment and Enjoyment in Year-Round Swimming.

Parents are known to influence the athlete sport experience through motivational climates. Athletes' perception of motivational climates and their own motives for sport participation influence enjoyment and long-term sport commitment. It is unknown, however, the extent parent motives for initially enrolling their child in a year-round sports program associate with children's sport participation enjoyment and commitment. The purposes of this study were to (a) determine parent motives for enrolling their child (5-8 years) in year-round swimming and (b) explore the relationships of parent motives and motivational climates with child enjoyment and commitment. Parents (n = 40) completed questionnaires on enrollment motives and motivational climate, while children (n = 40) answered questions on enjoyment and commitment. Of the seven motives measured, parents enrolled children in swimming primarily for fitness benefits (M = 4.5, SD = .45) followed by skill mastery (M = 4.31, SD = .48) and fun (M = 4.10, SD = .51) reasons. Findings revealed the fitness motive was moderately, negatively correlated with the success-without-effort facet of a performance climate (r = -.50, p < .01). The fun motive was moderately, positively associated with commitment (r = .43, p < .01). Parent motives for enrolling their child in sport may impact the young child sport experience and long-term sport continuation via motivational climates, enjoyment, and commitment.

Taste education - A food-based intervention in a school setting, focusing on children with and without neurodevelopmental disorders and their families. A randomized controlled trial.

Children with neurodevelopmental disorders (ND) such as Autism Spectrum Disorder (ASD) and Attention-Deficit/Hyperactive Disorder (ADHD) have high levels of fussy eating. However, no school-based food interventions exist for children with ASD and ADHD. To investigate the effect of Taste Education, 81 children with ND (n = 33), and without (n = 48), aged 8-12 years, and their parents, participated in a 7-week food intervention. Children were matched on age, ND, and sex, and randomized into Immediate-intervention and Delayed-intervention groups. Parents completed the Children's Eating Behaviour Questionnaire (CEBQ), and a food-variety questionnaire. After adjusting for baseline measures, repeated-measures analysis-of-variance with time-points, and condition as factors (Immediate intervention and Delayed intervention) were used to examine changes in CEBQ-scores, with a robust linear mixed-model fitted. Changes in percentage of accepted foods were tested using a logistic-regression model adjusting for baseline acceptance. Results showed superior results for Intervention compared to waiting, on Food fussiness, but not Enjoyment of food, with stable effects through six-months follow-up. There were non-significant differences between children with and without ND. Results also showed increased odds of accepting vegetables by a factor of 1.6 (95% Confidence Interval [CI]: 1.33-1.93, p < .001); nuts and seeds by a factor of 1.4 (95% CI: 1.27-1.6, p < .001), but no significant association for fruit (OR 1.12, 95% CI: 0.92-1.34, p = .244). Trends were similar for children regardless of ND-status. The Taste Education program, shows promise, as a simple, non-invasive way to decrease fussy eating and increase food variety in the long-term.

Fussy Eating among Children and Their Parents: Associations in Parent-Child Dyads, in a Sample of Children with and without Neurodevelopmental Disorders.

Parents are important agents in shaping children's eating habits. However, the associations between children's and parents' eating behaviors are complex and may be convoluted for various reasons, such as parenting feeding styles, stressful mealtimes, and children's neurodevelopmental disorders (ND), such as Autism Spectrum Disorder (ASD) and Attention-Deficit/Hyperactivity Disorder (ADHD). The purpose of this study was to analyze associations between parents and their children's fussy eating, in a cross-sectional sample of children, with and without ND. Ninety-seven parents answered screening questionnaires prior to an intervention study. Associations were investigated using two-way ANOVAs and chi-square analyses. Overall, children with ND accepted fewer food items and consumed unhealthier foods more frequently than children without ND. Fussy eating parents had children who accepted fewer food items and consumed unhealthier foods more frequently than children whose parents were not fussy eaters. Interaction effects were not significant. A higher proportion of fussy eating parents, than non-fussy eating parents, had children who had difficulties with combined foods and hidden ingredients. The findings highlight the need for further investigation into the relationships between parents' influence on their children's eating behavior and food consumption, as well as possible reciprocal impacts.

Burden of caregivers who care for oldest-old parents with disability: A cross-sectional study.

OBJECTIVE: To describe the characteristics of oldest-old Chinese with disability and their adult-child caregivers, and the extent to which these characteristics were associated with caregiver burden. METHODS: The study was based on 168 pairs of disabled oldest-old adults and their adult-child caregivers, derived from the Chinese Longitudinal Healthy Longevity Survey. Descriptive analyses of care recipients' and caregivers' characteristics were conducted respectively, in reference to caregiver burden. Statistically significant characteristics identified in these bivariate analyses were then jointly evaluated in multiple linear regression models with caregiver burden as the outcome. RESULTS: Care recipients positive emotion status [(ß = -0.227 (-0.412, -0.042)], multiple chronic disease [(ß = 0.513 (0.081, 0.945)], and caregivers spent more caregiving time [(ß = 0.225 (0.061, 0.389)] were main factors associated with caregiver burden. CONCLUSION: Adult-children caregivers perceived heavier burden if care recipients had low positive emotions, had multiple chronic diseases, and caregivers spent more time caregiving.

Parental Pain Catastrophizing, Communication Ability, and Post-surgical Pain Outcomes Following Intrathecal Baclofen Implant Surgery for Patients With Cerebral Palsy.

There is strong evidence that psychosocial variables, including pain catastrophizing, influence parental and child ratings of pain, pain expression, and long-term outcomes among children with chronic pain. The role of these factors among children who have communication deficits due to cerebral palsy (CP) and other intellectual and developmental disabilities is currently unclear. In this study, parental pain catastrophizing was assessed before intrathecal baclofen (ITB) pump implantation for spasticity management in 40 children and adolescents with CP, aged 4 to 24 years. Pain was assessed before and after surgery with two methods: a parent-reported pain interference scale, and behavioral pain signs during a standardized range of motion exam. Linear mixed models with clinical/demographic factors and scores from the Pain Catastrophizing Scale for Parents (PCS-P), and child spoken language ability as predictors and the pain variables as the outcomes were implemented. On average, both pain outcomes improved after surgery. Only child spoken language ability predicted change in behavioral reactivity scores, with children with phrase speech showing an increase in reactivity at follow-up compared to pre-surgery levels, on average. A significant interaction between PCS-P scores and spoken language ability on change in pain interference scores over time showed that dyads with children with phrase speech whose parents reported high PCS-P scores reported the least improvement in pain interference at follow-up. Due to the preliminary nature of the study, future work is needed to investigate the parental behaviors that mediate the relationships between parental catastrophizing and pain outcomes in this population.

Parent-child dyads and nuclear family association in pedometer-assessed physical activity: A cross-sectional study of 4-to-16-year-old Czech children.

The main aim of this study is to examine familial aggregation in pedometer-assessed physical activity (PA) and proxy-reported screen time (ST) with estimating which of the parents' lifestyle indicators help their offspring achieve step count (SC) recommendations under daily life conditions. The analysis included 773 parent-child dyads (591 mother-child, 182 father-child) and 511 nuclear family triads (mother-father-child) with data ambulatory PA monitored with a Yamax pedometer during a regular school/working week during the spring and autumn between 2013 and 2019. Based on Logistic regression analysis, an achievement of 10,000 steps a day by the mothers significantly (p < 0.001) increases the odds ratio of their children reaching the recommended daily SC in the parent-child dyads. Obesity/overweight of mothers (fathers) significantly (p < 0.05) increases (reduces) the chance of their children reaching the recommended daily SC in the analysis of the nuclear family triads. For both overweight/obese and non-overweight children, the odds of reaching the recommended daily SC are significantly (p < 0.05) increased by their regular participation (≥ twice per week) in organised leisure-time PA (analysis of the nuclear family triads) and non-excessive entertainment ST (≤2 h per day) in the mother-child and nuclear family triads. Despite the different mother-/father-child behavioural associations, SC of parents are positively associated with SC of their children (Linear regression analysis). The involvement of children in regular participation in organised leisure activities (at least twice a week) and limiting their excessive entertainment ST might be important factors contributing to the achievement of the recommended daily SC by children.

Postintervention and follow-up changes in caregiving behavior and representations after individually or group delivered hybrid Circle of Security-intensive intervention with New Zealand caregiver-child dyads.

The Circle of Security Intensive intervention (COS-I) aims to improve child attachment security and reduce disorganisation by improving caregiver capacities, including caregiving behavior and representations. Research on COS-I effectiveness with these goals is limited and none examines if positive changes are sustained. A recently revised hybrid COS-I protocol (COS-I-RH) incorporates Circle of Security-Parenting (COS-P) material and individual or group delivery options. We examined (1) post intervention and follow-up changes in caregiving behavior and representations after COS-I-RH and (2) if individual or group delivery moderated changes. New Zealand parent-child dyads with relationship concerns (n=36; child age M =35 months) referred to a community-based program completed COS-I-RH. Four caregiver capacities (supportive and unsupportive parenting (CTNES), parenting self-efficacy and satisfaction (PSOC)) were measured pre- and post-treatment, and one year later. Regardless of delivery mode, after COS-I-RH, parents showed large improvements on all 4 indices of caregiving behavior and representations, maintained at one-year follow-up.

Resemblance in accelerometer-assessed physical activity in families with children: the Lolland-Falster Health Study.

BACKGROUND: Evidence of intra-family resemblance in physical activity (PA) is lacking. The association between parent and child PA appears weak, the influence of age and gender on this association is uncertain, and no studies have investigated the degree of resemblance in family members' PA behaviours such as walking, sitting/lying, and biking. Thus, the aims of the study were to examine the degree of resemblance in PA within families, specifically between parents and children, and to explore the size of resemblance across age of children, gender of parents and children, and intensity and type of PA. METHOD: The study is a cross-sectional analysis of a subsample (902 parents and 935 children nested within 605 families) of the Danish population study Lolland-Falster Health Study. PA was measured using a dual-accelerometer system (Axivity AX3) with subsequent processing of time spent in light PA (LPA), moderate-to-vigorous PA (MVPA), and vigorous PA and classification of PA behaviour types. Families with at least one son/daughter aged 0-22 years and one parent providing minimum 4 days of valid accelerometer data were included in the analysis. A linear mixed model regression analysis was used to determine the intraclass correlation coefficient (ICC) of clustering among family members for PA intensities and PA behaviours, adjusted for sex, age, parental education, and the interaction between sex and age. RESULTS: In the analysis of within-family variation in PA, the ICCs across PA intensities and PA behaviours ranged from 0.06 to 0.34. We found stronger clustering in family members' PA for LPA and behaviours requiring low energy expenditure (LPA: ICC 0.22 (95% confidence interval (CI) 0.17; 0.28), sitting/lying: ICC 0.34 (95% CI 0.28; 0.40)), and walking: ICC 0.24 (95% CI 0.19; 0.30) than for higher intensities (e.g. MVPA: ICC 0.07 (95% CI 0.03; 0.14)). The ICC for biking was 0.23 (95% CI 0.18; 0.29). Analyses on parent-child dyads gave similar results. No interaction effects for gender and age (except for biking) were found. CONCLUSION: Parents and children's time spent in PA behaviours requiring low energy expenditure had moderate resemblance within families, whereas engagement in PA with higher intensities showed small or close-to-zero resemblance.

The Relationship between Obesity and Physical Activity of Children in the Spotlight of Their Parents' Excessive Body Weight.

BACKGROUND: The study reveals the relationships between daily physical activity (PA) and the prevalence of obesity in family members separated according to the participation of their offspring in organized leisure-time physical activity (OLTPA), and answers the question of whether the participation of children in OLTPA is associated with a lower prevalence of obesity in offspring with respect to parental PA and body weight level. METHODS: The cross-sectional study included 1493 parent-child dyads (915/578 mother/father-child aged 4-16 years) from Czechia selected by two-stage stratified random sampling with complete data on body weight status and weekly PA gathered over a regular school week between 2013 and 2019. RESULTS: The children who participated in OLTPA ≥ three times a week had a significantly lower (p < 0.005) prevalence of obesity than the children without participation in OLTPA (5.0% vs. 11.1%). Even in the case of overweight/obese mothers/fathers, the children with OLTPA ≥ three times a week had a significantly lower (p < 0.002) prevalence of obesity than the children without OLTPA (6.7%/4.2% vs. 14.9%/10.7%). CONCLUSIONS: The cumulative effect of regular participation in OLTPA and a child's own PA is a stronger alleviator of children's obesity than their parents' risk of overweight/obesity.