Education, culture and indigenous rights: The case of educational feform in Bolivia     

Sonia Comboni Salinas  José Manuel Juárez Núñez 《Prospects》2000,30(1):105-124

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Behavior of Infants with Iron-Deficiency Anemia     

Betsy Lozoff  Nancy K. Klein  Edward C. Nelson  Donna K. McClish  Martin Manuel  Maria Elena Chacon 《Child development》1998,69(1):24-36

This study tested the hypothesis that infants with iron-deficiency anemia show behaviors, such as increased proximity to caregivers, increased wariness or hesitance, and decreased activity, that could contribute to “functional isolation.” The behavior of 52 Costa Rican 12- to 23-month-old infants with iron-deficiency anemia was contrasted with that of 139 comparison group infants with better iron status during free play and mental and motor testing and in the home. Infants with iron-deficiency anemia maintained closer contact with caregivers; showed less pleasure and delight; were more wary, hesitant, and easily tired; made fewer attempts at test items; were less attentive to instructions and demonstrations; and were less playful. Adult behavior also differed. The results indicate that iron-deficiency anemia in infancy is associated with alterations in affect and activity, suggesting that functional isolation is a useful framework for understanding poorer developmental outcome in iron-deficiency anemia, the world's most common single nutrient deficiency.  相似文献   

MINIMA MORALIA REDUX: REFLECTIONS FROM A LIFE OF CONFLICT     

Eduardo Manuel Duarte 《Educational theory》1998,48(4):531-539

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Analysis of foot strike pattern,rearfoot dynamic and foot rotation over childhood. A cross-sectional study     

Pedro Ángel Latorre Román  Fernando Redondo Balboa  Juan Párraga Montilla  Víctor Manuel Soto Hermoso  Pedro José Consuegra González  Felipe García Pinillos 《Journal of sports sciences》2019,37(5):477-483

The purpose of this study was to determine the foot strike patterns (FSP), rearfoot position at initial contact (RPic, i.e., No INV/EVE) and foot rotation in children in relation to age. A total of 932 children aged 3 to 16 years participated in this study. A sagittal and frontal-plane video was recorded using a high-speed camcorder to analyse these variables. There is a significant increase (p < 0.001) of rearfoot strike patterns (RFS) prevalence in relation to age; e.g. preschool children (3–6 years old) displayed an RFS prevalence 46.65% and the adolescent population(15–16 years old) an RFS prevalence 92.20%. The total RFS prevalence in all samples was 69.25%. There was a significant reduction (p < 0.001) of prevalence of RPic in relation to age groups; preschool children displayed a prevalence of RPic 60.37% and the adolescent population 10%. There was a significant reduction (p < 0.001) of prevalence of no foot rotation in relation to age groups; preschool children displayed a prevalence of no foot rotation 48.95% and the adolescent population 13.55%. In conclusion, FSP in children are influenced by age. It is noteworthy that the RFS prevalence of children is lower in comparison to the adult population.  相似文献   

Effects of medium- and long-distance running on cardiac damage markers in amateur runners: a systematic review,meta-analysis,and metaregression     

Jacobo . Rubio-Arias  Luis Andreu  Luis Manuel Martínez-Aranda  Alejandro Martínez-Rodríguez  Pedro Manonelles  Domingo J. Ramos-Campo 《运动与健康科学(英文)》2021,10(2):192

BackgroundTo finish an endurance race, athletes perform a vigorous effort that induces the release of cardiac damage markers. There are several factors that can affect the total number of these markers, so the aim of this review was to analyze the effect of endurance running races on cardiac damage markers and to identify the factors that modify the levels of segregation of these cardiac damage markers.MethodsA systematic search of PubMed, Web of Science, and the Cochrane Library databases was performed. This analysis included studies where the acute effects of running races on cardiac damage markers (troponin I and troponin T) were analyzed, assessing the levels of these markers before and after the races.ResultsThe effects of running races on troponin I (mean difference = 0.0381 ng/mL) and troponin T (mean difference = 0.0256 ng/mL) levels were significant. The ages (R² = 14.4%, p = 0.033) and body mass indexes (R² = 14.5%, p = 0.045) of the athletes had a significant interaction with troponin I. In addition, gender, mean speed, time to finish the race, and type of race can affect the level of cardiac damage markers.ConclusionEndurance running races induce the release of cardiac-damage markers that remain elevated for at least 24 h after the races. In addition, young male athletes with high body mass indexes who perform races combining long duration and moderate intensity (i.e., marathons) release the highest levels of cardiac damage markers. Physicians should take into consideration these results in the diagnosis and treatment of patients admitted to the hospital days after finishing endurance running races.  相似文献   

Effects of plyometric jump training in female soccer player’s vertical jump height: A systematic review with meta-analysis     

Rodrigo Ramirez-Campillo  Javier Sanchez-Sanchez  Blanca Romero-Moraleda  Javier Yanci  Antonio García-Hermoso  Filipe Manuel Clemente 《Journal of sports sciences》2020,38(13):1475-1487

ABSTRACT

To assess the effects of plyometric jump training (PJT) in female soccer player’s vertical jump height, a review was conducted using the data sources PubMed, MEDLINE, Web Of Science and SCOPUS. Only peer-review articles were included. To qualify for inclusion in the meta-analysis, studies must have included (i) a PJT programme of at least 2 weeks, (ii) cohorts of healthy female soccer players with no restriction for age, (iii) a control group, (iv) a measure of countermovement jump (CMJ). The inverse variance random-effects model for meta-analyses was used. From 7,136 records initially identified through database searching, 8 were eligible for meta-analysis, comprising 9 training groups (n = 99) and 9 control groups (n = 94). The magnitude of the main effect was moderate (ES = 1.01 [95%CI = 0.36–1.66], Z = 3.04, p = 0.002). Sub-group analyses were performed (i.e., PJT frequency, duration and total number of sessions), revealing no significant subgroup differences (p = 0.34–0.96). Among the studies included in this review, none reported injury or other adverse effects. In conclusion, PJT is effective in female soccer players for the improvement of vertical jump height. In future, research must identify specific dose–response relationships following PJT, particularly in the long term.  相似文献   

Near-infrared spectroscopy-derived total haemoglobin as an indicator of changes in muscle blood flow during exercise-induced hyperaemia     

Thiago Silveira Alvares  Gustavo Vieira de Oliveira  Rogério Soares  Juan Manuel Murias 《Journal of sports sciences》2020,38(7):751-758

ABSTRACT

Blood flow changes in response to exercise have been attributed, among other factors, to the effect of vasodilators factors on the microvasculature, suggesting a close relationship between small blood vessels and conducting arteries. The main purpose of this study was to determine the relationship between the changes in near infrared spectroscopy (NIRS)-derived total haemoglobin ([tHb]) and muscle oxygen saturation (SmO₂) signals and femoral artery blood flow in response to resistance exercise at fast- and slow-velocity muscle contraction. The study randomised crossover design included twelve participants. NIRS and blood flow measurements were continuously monitored before, during, and 5 min after the exercise protocol. There was a significant correlation between [tHb] reperfusion slope ([tHb]_slope) and peak blood flow (BF_peak) after slow- and fast-velocity muscle contraction (r = 0.83, p = 0.0008 and r = 0.72, p = 0.0080, respectively). No significant correlation existed between the SmO₂ reperfusion slope (SmO_{2_slope}) and BF_peak after both slow- and fast-velocity muscle contraction exercise (r = ?0.46, p = 0.1253 and r = 0.33, p = 0.2841, respectively). This study demonstrated a strong relationship between the NIRS-derived [tHb] and Doppler ultrasound BF during the recovery period of dynamic resistance exercise at both slow- and fast-velocity contraction.  相似文献   

Estrategias de conteo implicadas en los procesos de adición y sustracción     

José Manuel Serrano  Ana María Denia 《Infancia y Aprendizaje》2013,36(39-40):57-69

Resumen

A lo largo del presente trabajo se analizan las diferencias existentes entre los diversos procesos puestos en juego por los sujetos a la hora de cuantificar lo real, destacando de entre ellos el subproceso de cuantificación extensiva métrica y uno de los esquemas básicos que lleva aparejados: el esquema de conteo. A continuación se pasa a analizar las diferentes estrategias utilizadas por nuetros escolares de 1°, 2°, 3° y 4° de E.G.B. cuando aplican este esquema para la resolución de algoritmos de adición y de sustracción, destacando la vinculación entre el desarrollo de las estrategias de conteo y la eficiencia en la solución de estos algoritmos.  相似文献   

Recording stratigraphic relationships among non-original deposits on a 16th century painting     

Jos Manuel Barros García 《Journal of Cultural Heritage》2009,10(3):338-346

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Policy turnaround: Towards a new deal for research and higher education. Governance,evaluation and rankings in the big data era     

Cinzia Daraio  Manuel Heitor  Michele Meoli  Stefano Paleari 《Higher Education Quarterly》2019,73(1):3-9

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