Informatics Publishing Limited

N. Senthil Kumar , Saurabh Sarma , Nizara D. Barthakur

Abstract

The population dynamics of Calopepla leayana Late, a serious (monophagous) defoliator of the commercially important timber species, Gmelina arborea (Roxb.), in Assam, India, was studied in terms of the fluctuation in their abundance in relation to temporal changes in the abiotic factors. Adults as well as larvae were recorded from March to November after which they undergo a brief period of diapause during winter. The population was observed maximum in the month of August when the interacting factors such as temperature and precipitation were high. Statistical analysis of the population data using forward stepwise regression and principal component analysis revealed temperature to be the principal component influencing the population.

Keywords

Calopepla Leayana, Abiotic Factors, Gmelina arborea, Assam

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M. Sathish , N. Senthil Kumar

Abstract

The Purpose of the study was to find our the Combined Effects of Plyometrics and Resistance Training on selected explosive ability of university volleyball players. For this purpose, forty male volleyball players studying in prist University thanjavur District, were selected as subjects at random and they were decided randomly into two groups of twenty each, namely Combined polymeric and Resistance Training Group and Control Group. The training period was limited to twelve weeks and for three days per week. The dependent variables selected for this study were Vertical Jumping Ability. The data obtained from the Experimental groups be fore and after the experimental period were stratistically analyzed with Analysis of covariance (ANCOVA). The level of confidence was fixed at 0.5 levels for all the cases. Vertical Jumping Ability and Horizontal Jumping ability showed significant difference between the groups.

Keywords

Plyometrics, Resistance Training, Vertical Jumping Ability, Horizontal Jumping Ability

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