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  1. Article ; Online: Bidirectional Associations between Objective Physical Activity and Sleep Patterns in Spanish School Children

    Manuel Ávila-García / Pedro Femia-Marzo / Francisco Javier Huertas-Delgado / Pablo Tercedor

    International Journal of Environmental Research and Public Health, Vol 17, Iss 3, p

    2020  Volume 710

    Abstract: Physical activity (PA) and sleep contribute to better children’s health. Nonetheless, the bidirectional relationship between both of these health-related factors is unclear when using objective measures. The aims of this study were (1) to describe the PA ...

    Abstract Physical activity (PA) and sleep contribute to better children’s health. Nonetheless, the bidirectional relationship between both of these health-related factors is unclear when using objective measures. The aims of this study were (1) to describe the PA (light PA and moderate-to-vigorous PA (MVPA) and sleep (duration, latency, and efficiency) patterns of children and compare them with recommendations, and (2) to analyze the bidirectional association between PA levels and sleep patterns in 470 Spanish children according to sex (average age of 8.4 (0.4) years, 51.9% boys). A tri-axial accelerometer and sleep logs were used to measure PA (light PA and MVPA) and sleep patterns (duration, latency, and efficiency) in the children for seven consecutive days. Linear mixed models were conducted to analyze the bidirectional association (PA → sleep and sleep → PA) adjusted for the child, the sex, the school, and the day of observation. The results showed that, overall, the children did not meet the sleep duration recommendations per day. Regarding the bidirectional association, increased light PA and MVPA during the day was related to decreased sleep duration but an improvement in sleep efficiency that night. However, sleep duration and sleep efficiency were only related negatively and positively to light PA the following day, respectively. Regarding sex, light PA was associated with decreased sleep duration in both sexes, although the average value was lower in boys. In addition, light PA was also related only to an improvement in sleep efficiency the same night in both sexes, with girls generally having more efficient sleep. More studies in a representative sample of children that use objective measures to corroborate these results are needed.
    Keywords physical activity ; sleep duration ; sleep latency ; sleep efficiency ; accelerometer ; children ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Multiple Choice Tests

    Pedro Femia-Marzo / Antonio Martín-Andrés

    Open Journal of Statistics, Vol 04, Iss 06, Pp 466-

    Inferences Based on Estimators of Maximum Likelihood

    2014  Volume 483

    Abstract: This paper revises and expands the model Delta for estimating the knowledge level in multiple choice tests (MCT). This model was originally proposed by Martín and Luna in 1989 ( British Journal of Mathematical and Statistical Psychology , 42: 251) ... ...

    Abstract This paper revises and expands the model Delta for estimating the knowledge level in multiple choice tests (MCT). This model was originally proposed by Martín and Luna in 1989 ( British Journal of Mathematical and Statistical Psychology , 42: 251) considering conditional inference. Consequently, the aim of this paper is to obtain the unconditioned estimators by means of the maximum likelihood method. Besides considering some properties arising from the unconditional inference, some additional issues regarding this model are also going to be addressed, e.g. test-inversion confidence intervals and how to treat omitted answers. A free program that allows the calculations described in the document is available on the website http://www.ugr.es/local/bioest/Delta
    Keywords Model Delta ; Multiple-Choice Tests ; Agreement ; Guessing ; Probabilities. Mathematical statistics ; QA273-280 ; Mathematics ; QA1-939 ; Science ; Q
    Subject code 310
    Language English
    Publishing date 2014-08-01T00:00:00Z
    Publisher Scientific Research Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Cross-Cultural Adaptation and Validation of the Spanish Version of the Performance Enhancement Attitude Scale (Petróczi, 2002)

    Jaime Morente-Sánchez / Pedro Femia-Marzo, Mikel Zabala

    Journal of Sports Science and Medicine, Vol 13, Iss 2, Pp 430-

    2014  Volume 438

    Abstract: The aim of the present study was to cross-culturally adapt and validate the Spanish version of the Performance Enhancement Attitude Scale (PEAS). A cross-sectional multi-sample survey with 17 independent datasets was carried out. Cross-cultural ... ...

    Abstract The aim of the present study was to cross-culturally adapt and validate the Spanish version of the Performance Enhancement Attitude Scale (PEAS). A cross-sectional multi-sample survey with 17 independent datasets was carried out. Cross-cultural adaptation of the PEAS into Spanish was conducted through forward/backward translations, consensus panels and comparative analyses of known-groups to establish evidence for its reliability and validity. Weighted Kappa coefficients with quadratic weighting were used to assess the reliability of each item, with Cronbach’s internal consistency coefficients for overall scale’s reliability and Spearman’s correlation coefficient for test–retest reliability over a one-week period. Confirmatory factor analysis (CFA) was performed to assess the scale’s structure. Differences between self-admitted doping users and non-users were analysed to verify the PEAS’ construct validity in 8 datasets. Spearman’s correlation coefficient was also used to assess the relationships between the PEAS and self-esteem, self-efficacy and perceived descriptive norm to establish convergent validity. The scale showed satisfactory levels of internal consistency (α = 0.71–0.85), reliability of each item (Kappa values range 0.34-0.64) and temporal stability (r = 0.818; p < 0.001). CFA showed acceptable fit (RMSEA <0.08, mean RMSEA = 0.055; χ2/df < 3, mean χ2/df = 1.89) for all but one samples. As expected, self-admitted doping users showed more positive attitude toward doping than non-users. Significant and strong negative relationship was found between PEAS and self-efficacy; weak negative correlation with self-esteem and and positive correlation with perceived descriptive norm. The Spanish version of PEAS showed satisfactory psychometric properties. Considerations for application and improvement are outlined.
    Keywords Doping ; assessment ; psychometric properties ; reliability ; validity ; Sports ; GV557-1198.995 ; Sports medicine ; RC1200-1245
    Subject code 150
    Language English
    Publishing date 2014-06-01T00:00:00Z
    Publisher University of Uludag
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Economic Crisis and Sexually Transmitted Infections

    María Ángeles Pérez-Morente / Adelina Martín-Salvador / María Gázquez-López / Pedro Femia-Marzo / María Dolores Pozo-Cano / César Hueso-Montoro / Encarnación Martínez-García

    International Journal of Environmental Research and Public Health, Vol 17, Iss 2480, p

    A Comparison Between Native and Immigrant Populations in a Specialised Centre in Granada, Spain

    2020  Volume 2480

    Abstract: This study aimed to analyse the influence of the economic crisis on the prevalence of sexually transmitted infections (STIs) in the immigrant population compared to the native population. A cross-sectional study was conducted by reviewing 441 clinical ... ...

    Abstract This study aimed to analyse the influence of the economic crisis on the prevalence of sexually transmitted infections (STIs) in the immigrant population compared to the native population. A cross-sectional study was conducted by reviewing 441 clinical records (329 Spanish nationals and 112 non-Spanish nationals) of individuals who, between 2000 and 2014, visited an STI clinic in Granada and tested positive for an infection. Descriptive statistical analyses were performed, and infection rates, odds ratios, and 95% confidence intervals (CIs) were calculated. The mean age was 28.06 years (SD = 8.30; range = 16–70). During the period 2000–2014, the risk of being diagnosed with an STI was higher among non-Spanish nationals than among Spanish nationals (odds ratio (OR) = 5.33; 95% CI = 4.78–6.60). Differences between both populations were less marked during the crisis period (2008–2014: OR = 2.73; 95% CI = 2.32–3.73) than during the non-crisis period (2000–2007: OR = 12.02; 95% CI = 10.33–16.17). This may be due to underreporting of diagnoses in the immigrant population. Immigrants visiting the STI clinic in Granada are especially vulnerable to positive STI diagnoses compared to the native population.
    Keywords sexually transmitted infections ; economic recession ; transients and migrants ; Medicine ; R
    Subject code 410
    Language English
    Publishing date 2020-04-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Sexually Transmitted Infections and Associated Factors in Southeast Spain

    María Ángeles Pérez-Morente / María Gázquez-López / María Adelaida Álvarez-Serrano / Encarnación Martínez-García / Pedro Femia-Marzo / María Dolores Pozo-Cano / Adelina Martín-Salvador

    International Journal of Environmental Research and Public Health, Vol 17, Iss 7449, p

    A Retrospective Study from 2000 to 2014

    2020  Volume 7449

    Abstract: The World Health Organization estimates that more than one million people acquire a Sexually Transmitted Infection (STI) every day, compromising quality of life, sexual and reproductive health, and the health of newborns and children. It is an objective ... ...

    Abstract The World Health Organization estimates that more than one million people acquire a Sexually Transmitted Infection (STI) every day, compromising quality of life, sexual and reproductive health, and the health of newborns and children. It is an objective of this study to identify the factors related to a Sexually Transmitted Infection diagnosis in the province of Granada (Spain), as well as those better predicting the risk of acquiring such infections. In this study, 678 cases were analyzed on a retrospective basis, which were treated at the Centre for Sexually Transmitted Diseases and Sexual Orientation in Granada, between 2000–2014. Descriptive statistics were applied, and by means of binary logistic regression, employing the forward stepwise-likelihood ratio, a predictive model was estimated for the risk of acquiring an STI. Sex, age, occupation, economic crisis period, drug use, number of days in which no condoms were used, number of sexual partners in the last month and in the last year, and number of subsequent visits and new subsequent episodes were associated with an STI diagnosis ( p < 0.05). The risk of being diagnosed with an STI increased during the economic crisis period (OR: 1.88; 95%-CI: 1.28–2.76); during the economic crisis and if they were women (OR:2.35, 95%- CI: 1.24–4.44); and if they were women and immigrants (OR: 2.09; 95%- CI:1.22–3.57), while it decreased with age (OR: 0.97, 95%-CI: 0.95–0.98). Identification of the group comprised of immigrant women as an especially vulnerable group regarding the acquisition of an STI in our province reflects the need to incorporate the gender perspective into preventive strategies and STI primary health care.
    Keywords sexually transmitted diseases ; public health ; risk groups ; Medicine ; R
    Subject code 360 ; 300
    Language English
    Publishing date 2020-10-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: VALIDEZ Y FIABILIDAD DEL RADAR PARA EL CONTROL DE LA VELOCIDAD DEL REMATE EN VOLEIBOL

    David Valadés Cerrato / José Manuel Palao Andrés / Pedro Femia Marzo / Paulino Radial Puche / Aurelio Ureña Espá

    Cultura, Ciencia y Deporte, Vol 2, Iss 6, Pp 131-

    2007  Volume 138

    Abstract: El presente trabajo se enmarca en el proceso de dar validez y fiabilidad a un protocolo de test que sirva para el control de la velocidad del remate a nivel de entrenamiento e investigación. El trabajo tiene dos objetivos: a) comprobar la validez del ... ...

    Abstract El presente trabajo se enmarca en el proceso de dar validez y fiabilidad a un protocolo de test que sirva para el control de la velocidad del remate a nivel de entrenamiento e investigación. El trabajo tiene dos objetivos: a) comprobar la validez del radar al registrar la velocidad del balón en el remate, y b) establecer la distancia de ubicación del radar respecto a la red, que permita obtener datos fiables de la velocidad máxima del balón en el remate. Se realizó un doble estudio para conseguir los objetivos de la investigación. Veinticuatro jugadoras de superliga participaron en el primer estudio, y cuatro jugadoras de superliga participaron en el segundo estudio. En el primer estudio, la velocidad del balón en el remate se midió con el radar y con análisis fotogramétrico a partir de la filmación realizada. Los datos obtenidos muestran una correlación de 0,98 entre los registros tomados por el radar y los obtenidos del análisis fotogramétrico. En el segundo estudio, el radar se ubicó a cuatro, cinco, seis y siete metros de distancia de la red para registrar las velocidades imprimidas al balón en la ejecución del remate. Los resultados obtenidos muestran que la ubicación ideal del radar para registrar la velocidad del remate debe ser a una distancia de 5 metros de la red. Esta ubicación fue la que presentó mayor estabilidad de los registros, medias de velocidades más altas y menor coeficiente de variación. Palabras clave: validez, fiabilidad, test, radar, voleibol, remate.El presente trabajo se enmarca en el proceso de dar validez y fiabilidad a un protocolo de test que sirva para el control de la velocidad del remate a nivel de entrenamiento e investigación. El trabajo tiene dos objetivos: a) comprobar la validez del radar al registrar la velocidad del balón en el remate, y b) establecer la distancia de ubicación del radar respecto a la red, que permita obtener datos fiables de la velocidad máxima del balón en el remate. Se realizó un doble estudio para conseguir los objetivos de la investigación. Veinticuatro jugadoras de superliga participaron en el primer estudio, y cuatro jugadoras de superliga participaron en el segundo estudio. En el primer estudio, la velocidad del balón en el remate se midió con el radar y con análisis fotogramétrico a partir de la filmación realizada. Los datos obtenidos muestran una correlación de 0,98 entre los registros tomados por el radar y los obtenidos del análisis fotogramétrico. En el segundo estudio, el radar se ubicó a cuatro, cinco, seis y siete metros de distancia de la red para registrar las velocidades imprimidas al balón en la ejecución del remate. Los resultados obtenidos muestran que la ubicación ideal del radar para registrar la velocidad del remate debe ser a una distancia de 5 metros de la red. Esta ubicación fue la que presentó mayor estabilidad de los registros, medias de velocidades más altas y menor coeficiente de variación.
    Keywords Sports ; GV557-1198.995 ; Recreation. Leisure ; GV1-1860 ; Geography. Anthropology. Recreation ; G
    Language Spanish
    Publishing date 2007-01-01T00:00:00Z
    Publisher Universidad Católica San Antonio de Murcia
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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