While it seems that whole body vibration (WBV) might be an effective modality to enhance physical performance, the proper prescription of WBV for performance enhancement remains unknown. The purpose of this study was to compare the immediate effect of various WBV accelerations on counter movement jump (CMJ) height, the duration of any effect, and differences between men and women. Forty-four pa...

BACKGROUND Children's activity level, including physical activity (PA) and screen sedentary time (SST), is influenced by environmental factors in which parents play a critical role. Different types of parenting styles may influence children's activity level. Inconsistent results were found on the association between parenting styles and PA, and few studies tested the association between parenti...

It is proved that any protocol that constructs a reliable data link service using an unreliable physical channel service necessarily includes in the packets some header information that enables the protocol to treat different packets differently. The physical channel considered is permitted to lose, but not reorder or duplicate packets. The formal framework used for the proof is the I/O automat...

We reexamine the model proposed by Gnedin and Ostriker (1992) in which Jeans' mass black holes (M BH 10 6 M) form shortly after decoupling. There is no nonbaryonic dark matter in this model, but we examine the possibility that b is considerably larger than given by normal nucleosynthesis. Here we allow for the fact that much of the high baryon-to-photon ratio material will collapse, leaving the...

Intracellular microelectrode techniques and intraceUular pH (pHi) measurements using the fluorescent dye 2',7'-bis(carboxyethyl)-5(6)-carboxyfluorescein (BCECF) were employed to characterize an electrogenic bicarbonate transport mechanism at the apical membrane of the frog retinal pigment epithelium (RPE). Reductions in apical concentrations of both [HCOs]o (at constant Pco2 or pHo) or [Na]o ca...