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Blake D McLean, Christopher J Gore, Justin Kemp
BACKGROUND AND OBJECTIVE: Hypoxic training techniques are increasingly used by athletes in an attempt to improve performance in normoxic environments. The 'live low-train high (LLTH)' model of hypoxic training may be of particular interest to athletes because LLTH protocols generally involve shorter hypoxic exposures (approximately two to five sessions per week of <3 h) than other traditional hypoxic training techniques (e.g., live high-train high or live high-train low). However, the methods employed in LLTH studies to date vary greatly with respect to exposure times, training intensities, training modalities, degrees of hypoxia and performance outcomes assessed...
September 2014: Sports Medicine
Darrell L Bonetti, Will G Hopkins
Adaptation to living or training in hypoxic environments (altitude training) continues to gain interest from sport scientists and endurance athletes. Here we present the first meta-analytic review of the effects on performance and related physiological measures following adaptation to six protocols of natural or artificial hypoxia: live-high train-high (LHTH), live-high train-low (LHTL), artificial LHTL with daily exposure to long (8-18 hours) continuous, brief (1.5-5 hours) continuous or brief (<1.5 hours) intermittent periods of hypoxia, and artificial live-low train-high (LLTH)...
2009: Sports Medicine
E K Pagaeva, P -A Misho, A Zhanin, T P Chanturishvili, K I Pagaeva
The paper defines the parameters reflecting the physical activity of adolescents and their correlation with health and a risk of behavioral disorders, bad habits, and cravings. A total of 9499 Georgian adolescents aged 14-18 years, the senior (9th-llth-form) pupils, selected through two-step cluster sampling were surveyed. The pupils anonymously filled in special questionnaires. This yielded the parameters reflecting the intensity of physical activity of the adolescents and the latter's going in for sports...
November 2006: Gigiena i Sanitariia
Roland S Moore, Carol B Cunradi, Genevieve M Ames
The purpose of this study was to assess changes in alcohol, tobacco, and other drug use after the terrorist attacks of September 11 among a cohort of young military personnel consisting of 661 active duty Navy personnel, including 164 women. Paired sample t tests were computed to assess mean differences in substance use in the 30 days before and after September 11. Average daily alcohol consumption significantly declined in the 30 days after September 11 among enlisted personnel (n = 315) and officers (n = 360)...
October 2004: Military Medicine
J P Alcantara-Licudine, N L Bui, Q X Li, G T McQuate, S L Peck
Xanthene dyes, i.e., phloxine B and uranine or phloxine B alone, are phototoxic to tephritid fruit flies infesting guava fruits. An analytical method was developed for determination of residues of these dyes used in bait solutions for suppression of the tephritid fruit fly population in guava fruits. The procedure involved solvent extraction, anion-exchange cleanup, and determination by liquid chromatography or capillary zone electrophoresis. The dyes were extracted from 50 g guava fruit at 45 degrees degrees with 400 mL methanol-acetonitrile (1 + 1) and 5 g magnesium oxide added as an alkaline and clarifying agent...
May 2000: Journal of AOAC International
L Rew, M Resnick, T Beuhring
PURPOSE: To describe and differentiate the usual sources of health care, patterns of utilization of services, and reasons for foregone health care among Hispanic adolescents by place of birth (U.S. mainland versus Puerto Rico or other country) and gender. METHODS: All subjects who identified themselves as Hispanic (n = 717) in a larger survey of 10,059 students in 7th (n = 3,596), 9th (n = 3,691), and llth (n = 2,772) grades in the state of Connecticut in 1996 were included in this secondary analysis...
December 1999: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
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