objectives the aim of this study was to examine temporal changes in technical and physical performances during a small-sided game (ssg) in elite soccer players. methods sixty elite youth players (age 14.8 ± 0.2 yr; stature 177 ± 5 cm; body mass 66.2 ± 4.7 kg) completed a 5 v 5 ssg using two repetitions of 8 minutes interspersed by 3 minutes of passive recovery. to evaluate temporal changes in p...

\A\e southern oyster drills, Stranionita haemastoma floridana (Conrad, 1837), have been collected from two Chesapeake Bay western shore tributaries. Four specimens were collected between Brown Shoal and Thomas Rock in the lower James River in February 2005. Thirteen live southern oyster drills were collected from Back Biver in April 2006. Identification of these drills as Stramonita haemastoma ...

PURPOSE The authors evaluated, under conditions simulating implant placement, the cutting efficiency, durability, heat production, and wear of implant drills. MATERIALS AND METHODS Osteotomies were performed on bovine ribs using a surgical unit mounted in a testing apparatus. A software program controlled the apparatus and recorded temperatures, depths, and drilling times. Seven brands of dri...

Top-down effects of predators in systems depend on the rate at which predators consume prey, and on predator preferences among available prey. In invaded communities, these parameters might be difficult to predict because ecological relationships are typically evolutionarily novel. We examined feeding rates and preferences of a crab native to the Pacific Northwest, Cancer productus, among four ...

PURPOSE To investigate the speed profiles of individual training modes in comparison with wheelchair rugby (WCR) competition across player classifications. METHODS Speed profiles of 15 international WCR players were determined using a radio-frequency-based indoor tracking system. Mean and peak speed (m/s), work:rest ratios, and the relative time spent in (%) and number of high-speed activitie...

This article focuses on an aspect of traditional instruction — the form-only activities commonly called "drills," "mechanical practice," or "pattern practice." The authors first distinguish language as an internalized system from language as a productive skill and review the nature of mechanical pratice. They contend that despite claims made about communicative language teaching and its goals, ...

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