Progressive proptosis secondary to pneumosinus dilatans of the ethmoidal sinus in a pediatric patient.

Pneumosinus dilatans (PD) is a rare disorder of unknown etiology which consists of an abnormal dilatation of one or more paranasal air sinuses without radiological evidence of localized mucous membrane alterations, hyperostosis, or bony erosion. Sinus walls are therefore of normal thickness. The enlargement of the bone may be generalized or focal, and apart from the aesthetic problem it carries, it is important to bear in mind the possible functional consequences it may imply. Although PD is usually a benign asymptomatic condition, some patients may develop progressive neurological signs and symptoms caused by the expanded sinuses. We herein present the case of a 12-year-old boy who had been referred to the Ophthalmology Department, complaining of a progressive and painless exophthalmos of his left eye, developed during 1 year. The cause was unknown and there were no functional problems. Computed tomography and magnetic resonance showed a large pneumatized ethmoidal sinus and confirmed the resulting proptosis. We asked the Ear Nose and Throat (ENT) department for a further examination, and finally, the patient was taken to the operating room, where the left ethmoidal sinus was exposed to an endoscopic endonasal technique; in particular, a maxillary and frontal endoscopic antrostomy ethmoidectomy was performed. Excellent results were obtained and the patient had no complaints. Currently, he remains well after a 16-month postoperative period.

Analysis of the psychometric properties of the five-factor self-concept questionnaire (AF-5) in Spanish students during the COVID-19 lockdown.

The present research aims to analyse the psychometric properties of the AF5 questionnaire for its adaptation for use with young people during a lockdown period. Research was conducted with a sample of 534 students aged between 13 and 17 years (M = 14.49; SD = 1.805). Exploratory factor analysis was conducted using the FACTOR program and confirmatory factor analysis was conducted using the M-PLUS 7 program. Results indicate that a four-dimensional model is most appropriate for bringing together the emotional and physical dimensions. Further, 11 items were removed due to poor factor loadings. The majority of factors were directly and positively correlated (99%; p < .01). The data obtained supports conclusions that the AF-5 meets validity and reliability requirements for it to be considered a useful instrument for use with young people during the COVID-19 lockdown period.

Spanish Costaleros' Physical Activity and Their Quality of Life.

(1) Physical activity is one of the most influencing factors in people' quality of life. Likewise, the costaleros of the Holy Week of Andalusia (Spain) carry out an important effort with high intensity during an extended time without any preparation. This study was the aim of knowing the intensity of the physical activity practiced by the costaleros in relation to their quality of life. (2) A transversal study was carried out with 1057 costaleros in Andalusia (Spain), where 930 were male and 127 female, between the ages of 18-61 years old (31.26 ± 7.60). For this purpose, descriptive, inferential, and correlative analyses were developed. Accelerometers (ActiGraph) were used during the procession to know the intensity of physical activity and the SF-36 test to know the self-perceived state of health and quality of life. (3) The intensity of physical activity practiced by costaleros is moderate, and it is related with their quality of life. In addition, positive associations are found between general health and physical activity. (4) Participants' quality of life is associated with physical activity and freedom from injury. In addition, the measurement by accelerometry provides real data on the intensity of the effort made.

The association of Self-concept with Substance Abuse and Problematic Use of Video Games in University Students: A Structural Equation Model. / Relación entre autoconcepto, consumo de sustancias y uso problemático de videojuegos en universitarios: un modelo de ecuaciones estructurales.

This study aims to define and contrast an explanatory model of consumption of alcohol, tobacco consumption, and problematic use of video games based on self-concept and its dimensions in a sample of university students. The research was conducted with a sample of 490 students from the province of Granada (Spain), aged between 20 and 29 years (M = 22.80 ± 3.63), with a homogeneous distribution by gender. The instruments used were the Self-concept Form-5 Questionnaire (García & Musitu, 1999), the Alcohol Use Disorders Identification Test (Saunders, Aasland, Babor, De la Fuente, & Grant, 1993), the Fagerström Test for Nicotine Dependence (Heatherton, Kozlowski, Frecker, & Fagerström, 1991) and the Questionnaire for Experiences Related to Video Games (Chamarro et al., 2014). A model of structural equations was estimated, which was adjusted properly, χ2(8) = 19.843, p = .011; CFI = .963, NFI = .943, IFI = .965, RMSEA = .055. As main results, a positive relationship between social and physical self-concept and consumption of alcohol was obtained, as well as a negative relationship between social self-concept and problematic use of videogames. Academic dimension was negatively related to alcohol and video game use. Furthermore, alcohol consumption was positively related to tobacco consumption and use of video games. It is concluded that levels of self-concept may represent a risk factor in substance abuse and digital leisure, and their study and consideration are appropriate.

El presente estudio pretende definir y contrastar un modelo explicativo del consumo de alcohol, tabaco y uso problemático de videojuegos en función del autoconcepto y sus dimensiones en una muestra de estudiantes universitarios. Participaron 490 estudiantes de la provincia de Granada (España), con una edad comprendida entre los 20 y 29 años (M = 22,80 ± 3,63) y una distribución homogénea según su sexo. Los instrumentos empleados fueron el Cuestionario de Autoconcepto Forma-5 (García y Musitu, 1999), Test para la Identificación de Trastornos en el Uso de Alcohol (Saunders, Aasland, Babor, De la Fuente y Grant, 1993), Test para la Dependencia a la Nicotina (Heatherton, Kozlowski, Frecker y Fagerström, 1991) y el Cuestionario de Experiencias Relacionadas con Videojuegos (Chamarro et al., 2014). Se llevó a cabo un modelo de ecuaciones estructurales que se ajustó de forma adecuada (χ2 = 19,843; gl = 8; p = .011; CFI = .963 NFI = .943; IFI = .965; RMSEA = .055). Los resultados revelan una relación positiva entre el autoconcepto social y físico con el consumo de alcohol, y negativa entre la dimensión social y el uso de videojuegos. La dimensión académica se relacionó negativamente con el consumo de alcohol y el uso de videojuegos. Asimismo, el consumo de alcohol se relacionó positivamente con el consumo de tabaco y el uso de videojuegos. Se concluye que los niveles de autoconcepto pueden representar un factor de riesgo en el consumo de sustancias y el ocio digital de pantalla, siendo conveniente su estudio y consideración.

Risk factors for persistence of lower respiratory symptoms among community members exposed to the 2001 World Trade Center terrorist attacks.

OBJECTIVES: We studied the course of lower respiratory symptoms (LRS; cough, wheeze or dyspnoea) among community members exposed to the 9/11/2001 World Trade Center (WTC) attacks during a period of 12-13 years following the attacks, and evaluated risk factors for LRS persistence, including peripheral airway dysfunction and post-traumatic stress disorder (PTSD). METHODS: Non-smoking adult participants in a case-control study of post-9/11-onset LRS (exam 1, 2008-2010) were recruited for follow-up (exam 2, 2013-2014). Peripheral airway function was assessed with impulse oscillometry measures of R5 and R5-20. Probable PTSD was a PTSD checklist score ≥44 on a 2006-2007 questionnaire. RESULTS: Of 785 exam 1 participants, 545 (69%) completed exam 2. Most (321, 59%) were asymptomatic at all assessments. Among 192 participants with initial LRS, symptoms resolved for 110 (57%) by exam 2, 55 (29%) had persistent LRS and 27 (14%) had other patterns. The proportion with normal spirometry increased from 65% at exam 1 to 85% at exam 2 in the persistent LRS group (p<0.01) and was stable among asymptomatic participants and those with resolved LRS. By exam 2, spirometry results did not differ across symptom groups; however, R5 and R5-20 abnormalities were more common among participants with persistent LRS (56% and 46%, respectively) than among participants with resolved LRS (30%, p<0.01; 27%, p=0.03) or asymptomatic participants (20%, p<0.001; 8.2%, p<0.001). PTSD, R5 at exam 1, and R5-20 at exam 1 were each independently associated with persistent LRS. CONCLUSIONS: Peripheral airway dysfunction and PTSD may contribute to LRS persistence. Assessment of peripheral airway function detected pulmonary damage not evident on spirometry. Mental and physical healthcare for survivors of complex environmental disasters should be coordinated carefully.

[Physical activity, obesity and self-esteem in chilean schoolchildren]. / Actividad física, obesidad y autoestima en escolares chilenos: Análisis mediante ecuaciones estructurales.

BACKGROUND: Obesity is a worldwide epidemic disease and a problem for the Chilean society. AIM: To analyze the relationship between physical condition, body mass index (BMI), level of physical activity and self-esteem. Material ad Methods: Questionnaires to assess self-esteem (Rosemberg scale) and levels of physical activity (Physical Activity Questionnaire for older Children, PAQ-C) were answered by 515 children aged 10.5 ± 0.5 years from 27 schools of Santiago de Chile. BMI was calculated. Course-Navette test was carried out, vertical jump and hand dynamometry were measured. For statistical analysis, structural equations were used. RESULTS: An acceptable goodness of fit for the models was found. There was a positive relationship between BMI and hand dynamometry, as well as a negative relationship between BMI and maximal oxygen consumption, jumping ability, physical activity and self-esteem. Finally, self-esteem was positively related to physical activity engagement. CONCLUSIONS: In these children, self-esteem was related to physical activity variables.

Posttraumatic stress disorder and new-onset diabetes among adult survivors of the World Trade Center disaster.

OBJECTIVE: To explore the temporal relationship between 9/11-related posttraumatic stress disorder (PTSD) and new-onset diabetes in World Trade Center (WTC) survivors up to 11 years after the attack in 2001. METHODS: Three waves of surveys (conducted from 2003 to 2012) from the WTC Health Registry cohort collected data on physical and mental health status, sociodemographic characteristics, and 9/11-related exposures. Diabetes was defined as self-reported, physician-diagnosed diabetes reported after enrollment. After excluding prevalent cases, there were 36,899 eligible adult enrollees. Logistic regression and generalized multilevel growth models were used to assess the association between PTSD measured at enrollment and subsequent diabetes. RESULTS: We identified 2143 cases of diabetes. After adjustment, we observed a significant association between PTSD and diabetes in the logistic model [adjusted odds ratio (AOR) 1.28, 95% confidence interval (CI) 1.14-1.44]. Results from the growth model were similar (AOR 1.37, 95% CI 1.23-1.52). CONCLUSION: This exploratory study found that PTSD, a common 9/11-related health outcome, was a risk factor for self-reported diabetes. Clinicians treating survivors of both the WTC attacks and other disasters should be aware that diabetes may be a long-term consequence.

[Predictors of scoliosis in school-aged children]. / Factores predictores de escoliosis en la población escolar.

BACKGROUND: Alterations in the spinal column and obesity are on the rise, causing great concern in health and educational strata. This paper aims to take a step further and study in detail the relationship of the presence of scoliotic hump in obese schoolchildren. OBJECTIVE: was to determine the relationship between prevalence of types of variables hump and sociodemographic, anthropometric, and functional-side dominance. METHODS: The sample consisted of 2,822 schoolchildren in Spain, analyzed in 2010 with an average age of 8.5 years (SD: 1.792). Analyzed for Adams test, BMI, Edinburgh inventory, deep flexion test, and demographic questionnaire, we used the SPSS 20.0 (descriptive and test multivariate binary logistic regression). RESULTS: The number of subjects who had scoliosis was 1,023 (36.3%), obesity occurred in 359 (12.7%) cases, and after regression including associations regarding gender, (adjusted OR: 2.044; 1.731-2.413), age (adjusted OR: 1.121; 1.070-1.174), presence of obesity (adjusted OR: 0.676; 0.518-0.882), and flexibility (adjusted OR: 1.015; 1.001-1.029). CONCLUSIONS: The female participants were twice as likely to have hump. The prevalence with respect to age indicates that any schoolchild with a year of chronological age has 1.12 times higher risk of developing hump and subjects carrying the school supplies backpack have less risk of hump.

[Analysis of the prevalence of scoliosis and associated factors in a population of Mexican schoolchildren using sifting techniques]. / Análisis de la prevalencia de escoliosis y factores asociados en una población escolar mexicana mediante técnicas de cribado.

BACKGROUND: It is known that in the last decade, spinal disorders are increasing among children, and this generates high concern in areas of healthcare and educational stakeholders to develop preventative strategies to help curb this trend. This paper intends to go a step further in this direction and to explore factors associated with the presence of scoliosis hump, thus contributing to a better approach in the treatment and prevention of this disease in Mexican schools. OBJECTIVES: The objectives of the study were to analyze the prevalence of scoliosis, posture, laterality, obesity, early plant development, and deformity in schoolchildren aged 9-12 years of Ciudad Carmen (Mexico) and to check the possible relationship of the latter with the presence of hump scoliosis. METHODS: The sample consisted of 295 Mexican schoolchildren, analyzed in 2012, with an average age of 10.36 years (SD: 1,142); valued by Adams Test, Posture Kendall, BMI, Edinburgh inventory test, and plantogram sitting height. For analysis of the data, SPSS 20.0 was used. RESULTS: The number of subjects who had scoliosis was 42 (14.2%), improper posture occurred in 123 (41.7%) cases, 158 (53.5%) subjects were obese, in 63.7% maturational development had not started, most were skilled and had a normal foot type, and after the binary logistic regression analysis, the factors with a significant level of association with the presence of scoliosis were laying hump (Exp [B]: 5.569; 2.746-11.757), the type of foot (Exp [B]: 0151; 0.033-0.652), and age (Exp [B]: 242; 0.192-0.877). CONCLUSIONS: The prevalence of scoliosis among Mexican schoolchildren is similar to that found in other parts of the world. half of the school presented data from obesity and four in ten students had abnormal posture. Furthermore, the model indicated that subjects with correct posture were five-times less likely to develop scoliosis hump, that schoolchildren with normal feet were 14% less likely to have scoliosis, and that the risk increased with age.

Impact of emotional intelligence and academic self-concept on the academic performance of educational sciences undergraduates.

Over the last few years, the inclusion of psychosocial factors in the teaching and learning processes has become increasingly important due to their proven influence on students' academic performance, especially at the university stage. In this regard, the aim of this study is to analyse the impact of emotional intelligence and academic self-concept on the students' academic achievement. The results obtained revealed some differences according to gender in all the variables considered. Specifically, women presented higher levels of emotional attention, academic self-concept and performance, while men stood out in emotional clarity and emotional repair. The findings obtained show the importance of including psychosocial factors in university training plans.

Impact of Physical Activity and Bio-Psycho-Social Factors on Social Network Addiction and Gender Differences in Spanish Undergraduate Education Students.

Social network use has increased in recent years. Social networks are fast-changing and may cause negative effects such as dependence and addiction. Hence, it was decided to establish two research aims: (1) to identify the social network used by university students and their use levels according to their sex and (2) to analyse how age, body mass index, physical activity, emotional intelligence and social network type affect addiction to social networks according to young people's sex. A cross-sectional study was designed involving Spanish university students from Education Degrees. The mean age of the participants was 20.84 years (±2.90). Females made up 69.8% of the sample and males 30.2%. An online questionnaire was administered that included sociodemographic questions, IPAQ-SF and TMMS-24. This study found that all students use WhatsApp and more than 97% have YouTube and Instagram accounts. The linear regression model obtained was as follows: social network addiction = 3.355 + 0.336*emotional attention - 0.263*emotional clarity. There is a positive relationship between social network addiction and emotional attention (r = 0.25; p < 0.001) and negative relationships between social network addiction and emotional clarity (r = -0.16; p = 0.002) and between social network addiction and age (r = -0.17; p = 0.001). University students report lower levels of social network addiction and slightly higher levels of social network addiction among females. In addition, there are significant differences between the average social network addiction scores of university students in terms of their use of Telegram, TikTok and Twitch.

Association between Quality of Life, Confinement, and Sex in Adults: A Multigroup Structural Equation Analysis.

The state of confinement during the COVID-19 pandemic affected the quality of life of the general population. This study aims to define and contrast an explanatory model of the quality of life in adults and to analyze the relationships between these variables based on the state of confinement and sex. A total of 872 people from Chile aged between 17 and 50 (M = 21.70 years; SD= 3.272), of both sexes (60.90% male and 39.1% female) participated in this research, of whom 46.6% were not confined when tested and 53.4% were confined, analyzing the quality of life. A model of multi-group structural equations was performed, which adjusted very well (χ2 = 559.577; DF = 38; p < 0.001; IFC = 0.934; NFI = 0.916; IFI = 0.934; RMSEA = 0.061). The results show a positive and direct relationship among all the variables studied and the structural equation model proposed according to confinement and sex reveals a good fit in all the evaluation indexes. Stress and sleep, personality, and introspection were the indicators with the greatest influence in the four models, followed by the family and friends indicator with a medium correlation strength, such as the health monitoring dimension, although this was not as influential in confined individuals. The main conclusions are that the best adjustments are obtained in confined adults and females, and the data show that the psychological indicators obtained (stress and sleep, personality, and introspection) have the greatest influence on adults in the four models proposed with regard to their quality of life.

Moderate-Vigorous Physical Activity, Screen Time and Sleep Time Profiles: A Cluster Analysis in Spanish Adolescents.

The study had two aims: (1) To classify the adolescents according to their levels of moderate-vigorous physical activity, screen time and sleep time, and (2) to analyze, in a descriptive and correlational manner, the profiles of moderate-vigorous physical activity, screen time and sleep time of each cluster according to the sex and grade of the adolescents. The study design was cross-sectional, with descriptive and correlational analysis. The sample consisted of 663 adolescents in Compulsory Secondary Education from Soria (Spain). The Four by One-Day Physical Activity Questionnaire was used to measure levels of physical activity, screen time and sleep time. The results showed that the young people had an average of 67.99 ± min/day of moderate-vigorous physical activity, 112.56 min/day of screen time and 548.63 min/day of sleep time. Adolescents were classified into three clusters according to their levels of physical activity, screen time and sleep time (FMANOVA (6,1318) = 314.439; p ≤ 0.001; ß = 1; f = 1.177). In conclusion, only 28.21% of the young people accomplished the recommendations for physical activity practice, screen time and sleep time. Moreover, these results vary according to the sex and grade of the adolescents.

Effectiveness of a Judo Intervention Programme on the Psychosocial Area in Secondary School Education Students.

Currently, many combat sports are pedagogically conceived as uneducational and unreliable for the development of young people. The present research aims to investigate the influence of a Judo intervention programme on the motivational climate towards sport, aggressive behaviour, emotional intelligence, and self-concept in secondary school students and to establish the relationships between them. This objective was broken down into (a) developing an explanatory model of the variables mentioned above and (b) testing the model equations through a multi-group analysis in terms of pre-test and post-test. The present study conducted a pre-post-test quasi-experimental design with a single experimental group. The sample consisted of a total of 139 adolescents (12.67 ± 1.066), 50.4% of whom were male (n = 70) and 49.6% female (n = 69). The results show that the intervention decreased all types of aggression and increased levels of emotional intelligence. An increase in social, physical and academic self-concept and decreases in the family and emotional areas were also observed. Finally, for the motivational climate, a tendency towards the ego climate to the detriment of the task climate was observed. It is concluded that the Judo intervention programme is effective in decreasing aggressive behaviour and effective in increasing levels of emotional intelligence and self-concept.

Levels of Physical Activity, Family Functioning and Self-Concept in Elementary and High School Education Students: A Structural Equation Model.

In the adolescent population there is great concern about low levels of physical activity and low levels of family awareness of the benefits of physical exercise on physical and mental health. This study aims to determine the influence of physical activity levels, family functioning and self-concept in primary and secondary school students, as well as to develop a structural equation model as a function of weekly physical activity time. A descriptive, cross-sectional, comparative study was conducted on whether students engage in more than three hours of physical activity per week. To collect the data, instruments validated by the scientific community were used, such as the Adaptability, Partnership, Growth, Affection, and Resolve family questionnaire (APGAR) and the self-concept questionnaire form 5. The results show that those students who engage in more than 3 h of physical activity per week have higher levels of family functioning than those who do not meet this sport criterion. In addition, physically active students show higher scores on all dimensions of self-concept than those who practice less than 3 h of physical activity per week. Finally, as a conclusion, it can be affirmed that the amount of physical activity practice brings benefits to student's mental health.

Relationship between Physical Activity, Mediterranean Diet and Emotional Intelligence in Spanish Primary Education Students.

There is an international social concern about the low levels of physical activity among young people. It is essential to know what factors influence the practice of physical activity in order to design effective proposals for health promotion. The study aims to: (1) classify primary school students according to their levels of out-of-school physical activity, Mediterranean diet, emotional attention, emotional clarity and emotional repair; (2) analyse descriptively and correlationally the adolescents' profiles of out-of-school physical activity, Mediterranean diet and emotional attention, clarity and repair. The study design was cross-sectional and descriptive-correlational. The sample consisted of 293 children aged 10-12 years in Granada (Spain). An ad hoc socio-academic questionnaire, the KIDMED test and the Trait Meta-Mood Scale (TMMS-24) were used for data collection. Four clusters were identified by the Ward's method and participants were classified using the K-means method. Subsequently, cluster classification was validated through the MANOVA test (F (861) = 106.12; p ≤ 0.001; f = 1.95). The strongest correlation was obtained in cluster 1 between emotional clarity and emotional repair (r = 0.56; p ≤ 0.01). In conclusion, the mean values of time spent in out-of-school physical activity, Mediterranean diet, emotional attention, emotional clarity and emotional repair of students are adequate and vary according to sex. There are significant differences among the physical activity levels of all clusters, as well as among the emotional variables of attention, clarity and repair. In addition, the correlations between the variables studied vary in each cluster.

Are there differences between Mediterranean diet and the consumption of harmful substances on quality of life?-an explanatory model in secondary education regarding gender.

Background: Adolescence is a key life stage in human development. It is during this stage of development that healthy and physical behaviors are acquired that will last into adulthood. Gender differences in the acquisition of these behaviors have been observed. This research aims to (a) study the levels of Mediterranean diet adherence, quality of life and alcohol and tobacco consumption as regarding the gender of the participants and (b) study the effects of the variable adherence to the Mediterranean diet, alcohol consumption and tobacco consumption on quality of life as a function of the gender of the participants. Methods: A non-experimental, cross-sectional, exploratory study was carried out in a sample of 1,057 Spanish adolescents (Average Age = 14.19; Standard Deviation = 2.87). Results: The comparative analysis shows that the male teenagers shows a higher Mediterranean diet adherence compared to the male adolescents (p ≤ 0.05) and a higher consumption of alcoholic beverages (p ≤ 0.05). On the contrary, adolescent girls show a higher consumption of alcoholic beverages than male participants (p ≤ 0.05). The exploratory analysis indicates that for boys, alcohol consumption has a beneficial effect on the quality of life of adolescents (ß = 0.904; p ≤ 0.001). Conclusion: In this case, participants show differences in the levels of Mediterranean diet adherence, consumption of harmful substances and quality of life according to gender. Likewise, there are different effects between the variables according to gender. Therefore, gender is a key factor to consider during adolescence.

Physical Activity Time, Alcohol Consumption, Mediterranean Diet, and Anxiety in Education Science Students.

Student lifestyles change during university. This research aimed to classify university students according to their levels of physical activity, alcohol consumption, adherence to the Mediterranean diet, and anxiety and studied the relationships between the variables using a multigroup equation model according to gender. The sample was composed of 549 participants (M = 23.06; S.D. = 6.22), of whom 409 were women and 140 were men. Validated and adapted instruments such as the Beck Anxiety Inventory, the PREDIMED Questionnaire, and the Alcohol Use Disorder Identification Test were used. The data revealed four clusters through Ward's method and the k-means method. Regarding the exploratory model, differences were found in the effects of the variables according to sex. In conclusion, alcohol consumption was positively associated with the Mediterranean diet, and physical activity was negatively associated with the Mediterranean diet and anxiety.

Motivational Climate, Anxiety and Physical Self-Concept in Trainee Physical Education Teachers-An Explanatory Model Regarding Physical Activity Practice Time.

There is an increase in sedentary lifestyles among young people. However, the development of a certain motivational climate can play a key role in the prevention of such lifestyles. Taking into account the aforementioned, the present research aims to establish the relationship between the motivational climate towards sport, anxiety and physical self-concept and to identify and clarify the existing relationships between anxiety, motivational climate and physical self-concept, by breaking down this objective into (a) developing an explanatory model of the motivational climate towards sport and its relationship with anxiety and physical self-concept and (b) contrasting the structural model by means of a multi-group analysis, according to the time spent doing physical activity per week. For this purpose, a cross-sectional descriptive and comparative study was carried out with a total of 568 university students (M = 25.09; SD = 6.22). A sociodemographic questionnaire, the Spanish version of the Perceived Motivation Climate Questionnaire in Sport, the Self-Concept Form-5 and the Beck Anxiety Inventory were used for data collection. The results show that more time spent doing physical activity brings benefits in terms of physical self-concept and homework climate, helping to reduce anxiety levels. As conclusions, it is observed that a longer time spent doing physical activity brings benefits in the channelling of disruptive states and improvements in physical self-concept.

Moderate-Vigorous Physical Activity, Family Support, Peer Support, and Screen Time: An Explanatory Model.

It is important to investigate how the different factors of physical activity and screen time influence each population group in order to design effective proposals for health promotion. This study aims to: (1) create an explanatory model to establish the relationships between moderate-vigorous physical activity time, screen time, family support, and peer support of adolescents in the region of Soria (Spain); (2) contrast the explanatory structural model according to the intensity of physical activity. A representative sample of 694 adolescents, aged 12-17 years, from the region of Soria was selected. The Four by One-Day Physical Activity Questionnaire, the Parent Support Scale, and the Peer Support Scale were administered. The data were treated according to a structural equation model to demonstrate the relationships between the study variables. The Chi-square p-values and standardised fit indices (CFI, NFI, IFI, TLI, and RMSEA) were appropriate. Moreover, acceptable parameters were obtained in the general equations. The theoretical model is useful to explain the relationships between moderate-vigorous physical activity, family support, peer support, and screen time. In addition, models that differentiate between moderate and vigorous physical activity independently are also useful. Peer support plays a particular role relative to physical activity time, and family support plays a specific role regarding screen time.