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San Fernando del Valle de Catamarca, Argentina

The National University of Catamarca is an Argentine national university, situated in the city of Catamarca, capital of Catamarca Province. Wikipedia.

Argentina through the nutrition transition (TN), affecting virtually all populations in the world, with particular characteristics and heterogeneity within provinces and regions. Changes in diet, with lifestyles are traversed by socioeconomic conditions changing of economic crisis experienced by the country in recent decades. The region of northwestern Argentina (NOA) in particular has the lowest human development indicators that articulate with an increasingly growing trend towards obesity, particularly in the poorest strata of society, in addition to food strategies play chords to the family budget other factors, cultural, related to the poorer perceived fatness as a sign of prosperity. Source

Cappa D.F.,Memorial University of Newfoundland | Cappa D.F.,National University of Catamarca | Behm D.G.,Memorial University of Newfoundland
Journal of Strength and Conditioning Research | Year: 2013

The objective of this study was to compare drop (DJ) and hurdle jumps using a preferred, flat foot (FLAT) and forefoot (FORE) landing technique. Countermovement jump height was used to establish the hurdle and the DJ heights. The subjects performed forward hurdles and vertical DJs on a force plate. Measures included vertical ground reaction force (VGRF), contact time, leg stiffness, and rate of force development (RFD). Electromyographic (EMG) activity was measured in the rectus femoris, biceps femoris, tibialis anterior, and gastrocnemius during 3 phases: preactivity, eccentric phase, and concentric phase. All the kinetic variables favored hurdles over DJs. Specifically, hurdle-preferred technique and FORE exhibited the shortest contact time and DJ FLAT the longest. The VGRF was higher in hurdle preferred and FORE than in DJ preferred, FLAT, and FORE. For stiffness and RFD, hurdle preferred and FORE were higher than DJ preferred and FLAT. Hurdle jumps showed higher rectus femoris EMG activity than DJ did during preactivity and eccentric phases but lower activity during the concentric phase. Considering the type of landing, FLAT generally demonstrated the greatest EMG activity. During the concentric phase, DJ exhibited higher rectus femoris EMG activity. Biceps femoris activity was higher with hurdles in all the phases. Gastrocnemius showed the highest EMG activity during the concentric phase, and during the eccentric phase, hurdle preferred and FORE showed the highest results. In conclusion, the hurdle FORE technique was the most powerful type of jump. © 2013 National Strength and Conditioning Association. Source

Marcora P.I.,National University of Cordoba | Renison D.,National University of Cordoba | Pais-Bosch A.I.,National University of Catamarca | Cabido M.R.,National University of Cordoba | Tecco P.A.,National University of Cordoba
Forest Ecology and Management | Year: 2013

Understanding the factors that determine altitudinal distribution of species is very important to evaluate the influence of global change. Although climate is the major driver of vegetation distribution, other factors, such as herbivory by livestock, can be more important locally and regionally. Despite its importance, the altitudinal range distribution of species and how it is influenced by climate and livestock are generally unknown. In the Sierras Grandes Mountains of central Argentina, woodlands of lower and upper altitudes are interrupted by an intermediate vegetation belt devoid of forest. Traditionally, this pattern was assumed to be determined by climate, although recent studies suggest that forest distribution would be driven by livestock grazing. However, the potential altitudinal range distribution of the principal woody species of these forests and how it is affected by livestock are still poorly known. In this study, we used an experimental approach to evaluate seedling survival and growth - with and without livestock presence - of the three principal woody species of the mountain woodlands along the entire altitudinal gradient of Sierras Grandes. In January 2009, we planted seedlings of Polylepis australis, Maytenus boaria and Escallonia cordobensis inside and outside livestock exclosures at seven altitudinal sites established every 200-400. m. asl, from 940. m. asl to 2700. m. asl (i.e., maximum altitude of Sierras Grandes). During the three following winters, we evaluated seedling survival and height and measured stocking rates. Although the three species were able to sprout after browsing, livestock markedly reduced seedling survival and height. Inside the exclosure, the three species successfully survived and grew along the entire gradient, including the altitudinal belt devoid of forest. Furthermore, after three growing seasons P. australis and E. cordobensis flowered inside the exclosure at the altitudes where seedlings reach greater heights (2200. m. asl and 1200 and 1600. m. asl, respectively). We suggest that under the current high stocking rates, livestock would strongly hinder seedling establishment of the three principal woody species at most altitudes of Sierras Grandes. Our findings are in agreement with the assumption that the present altitudinal belt devoid of forest is not climatically driven; rather, livestock is the major factor of current forest distribution. © 2012 Elsevier B.V. Source

Cappa D.F.,Memorial University of Newfoundland | Cappa D.F.,National University of Catamarca | Behm D.G.,Memorial University of Newfoundland
Journal of Strength and Conditioning Research | Year: 2011

The objective of this study was to compare bilateral and unilateral hurdle jumps with traditional countermovement jumps (CMJs). Thirteen athletes were tested during continuous forward bilateral and unilateral hurdle jumps and single CMJ. Countermovement jump height was used to establish the hurdle height. Subjects jumped forward over 4 hurdles with the force plate positioned after the second hurdle to measure vertical ground reaction force (VGRF), contact time (CT), and rate of force development (RFD). For bilateral jumps, hurdle height was established at maximal (100%) CMJ height and at 120, 140, and 160% of the CMJ height. The athletes were instructed to jump as fast as possible to mimic a training session drill. For unilateral jumps, hurdle height was set at 70, 80, and 90% of the CMJ height. Bilateral 160% jumps showed a significantly longer CT than bilateral 100, 120, and 140% jumps. The bilateral 100, 120, and 140% jumps had significantly shorter CT than the unilateral jumps and CMJ. The VGRF during bilateral jumps was higher than unilateral jumps and CMJ. Bilateral 160% jump RFD was significantly higher than CMJ and unilateral jumps but significantly lower than the other bilateral jumps. In conclusion, the characteristics of the bilateral jumps were substantially different from those of the CMJ and unilateral hurdle jumps. As bilateral hurdle jumps with a height between 100 and 140% of the CMJ provide similar CTs and VGRF as many reported sprint or jump actions, they may be considered a more training-specific power training drill than the CMJ. © 2011 National Strength and Conditioning Association. Source

Fernandez L.,National University of Catamarca | Sanabria E.A.,National University of San Juan | Quiroga L.B.,National University of San Juan
Ichthyological Exploration of Freshwaters | Year: 2013

Silvinichthys gualcamayo, new species, is described from a stream at 2000 m elevation in the lower slope of the Andean cordillera of San Juan, Argentina. It is distinguished from the three previously described species in the genus by the following combination of characters: the pelvic fin and girdle absent, the caudal peduncle expanded posteriorly toward caudal-fin, the caudal peduncle length 22.0-23.9 % SL, 9-10 dorsal-fin rays, 5-6 branched dorsal-fin rays, 38 vertebrae total, 9 opercular odontodes, 20 interopercular odontodes, 7 pectoral-fin rays, and the wide supraorbital tendon bone. © 2013 by Verlag Dr. Friedrich Pfeil, München, Germany. Source

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