Coarse vessels in the burials of Lerma Valley (Salta province)

Desde comienzos del siglo XX se han planteado interrogantes sobre el origen y cronología de hallazgos aislados de entierros de adultos en vasijas de carácter tosco cubiertos con tapas con las mismas características en el valle de Lerma. Algunos autores han propuesto que su origen puede deberse a la llegada de grupos guaraníes, vinculando al valle con las tierras ubicadas más al oriente. Otros postularon su relación con las vasijas del tipo Candelaria y con respecto a su cronología se ha propuesto una antigüedad que los ubica en momentos de Desarrollos Regionales-Inca. Pese a las prospecciones de años recientes, estos hallazgos todavía no han podido ser relacionados de manera directa a otro tipo de evidencia no funeraria. En este trabajo se presenta un análisis comparativo de las piezas cerámicas y su distribución, incorporando información obtenida en tareas de rescate que permitieron recuperar datos contextuales relacionados con la posición, la profundidad y las asociaciones de las vasijas. Se da a conocer igualmente el análisis preliminar de los restos óseos humanos asociados y un fechado radiocarbónico.Fil: Mamani, Mabel. Universidad Nacional de Salta. Facultad de Humanidades. Centro Promocional de Investigaciones en Historia y Antropología "Dr. Guillermo B. Madrazo"; ArgentinaFil: Mulvany, Eleonora. Universidad Nacional de Salta. Facultad de Humanidades. Centro Promocional de Investigaciones en Historia y Antropología "Dr. Guillermo B. Madrazo"; ArgentinaFil: Diaz, M. Etelvina. Universidad Nacional de Salta. Museo de Antropologia; ArgentinaFil: Castellanos, María Cecilia. Universidad Nacional de Salta. Facultad de Humanidades. Centro Promocional de Investigaciones en Historia y Antropología "Dr. Guillermo B. Madrazo"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentin

Association between breakfast frequency and physical activity and sedentary time : a cross-sectional study in children from 12 countries

BackgroundExisting research has documented inconsistent findings for the associations among breakfast frequency, physical activity (PA), and sedentary time in children. The primary aim of this study was to examine the associations among breakfast frequency and objectively-measured PA and sedentary time in a sample of children from 12 countries representing a wide range of human development, economic development and inequality. The secondary aim was to examine interactions of these associations between study sites.MethodsThis multinational, cross-sectional study included 6228 children aged 9-11years from the 12 International Study of Childhood Obesity, Lifestyle and the Environment sites. Multilevel statistical models were used to examine associations between self-reported habitual breakfast frequency defined using three categories (breakfast consumed 0 to 2days/week [rare], 3 to 5days/week [occasional] or 6 to 7days/week [frequent]) or two categories (breakfast consumed less than daily or daily) and accelerometry-derived PA and sedentary time during the morning (wake time to 1200h) and afternoon (1200h to bed time) with study site included as an interaction term. Model covariates included age, sex, highest parental education, body mass index z-score, and accelerometer waking wear time.ResultsParticipants averaged 60 (s.d. 25) min/day in moderate-to-vigorous PA (MVPA), 315 (s.d. 53) min/day in light PA and 513 (s.d. 69) min/day sedentary. Controlling for covariates, breakfast frequency was not significantly associated with total daily or afternoon PA and sedentary time. For the morning, frequent breakfast consumption was associated witha higher proportion of time in MVPA (0.3%), higher proportion of time in light PA (1.0%) and lower min/day and proportion of time sedentary (3.4min/day and 1.3%) than rare breakfast consumption (all p0.05). No significant associations were found when comparing occasional with rare or frequent breakfast consumption, or daily with less than daily breakfast consumption. Very few significant interactions with study site were found.ConclusionsIn this multinational sample of children, frequent breakfast consumption was associated with higher MVPA and light PA time and lower sedentary time in the morning when compared with rare breakfast consumption, although the small magnitude of the associations may lack clinical relevance.Trial registrationThe International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) is registered at(Identifier NCT01722500).Peer reviewe