Colby R Randall

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PURPOSE To assess the accuracy of the SenseWear Pro Armband for estimating energy expenditure during exercise. METHODS : Forty subjects (age = 23.2 +/- 3.8 yr; body mass index = 23.8 +/- 3.1 kg x m) performed four exercises (walking, cycling, stepping, arm ergometry) with each exercise lasting 20-30 min and workload increasing at 10-min intervals.(More)
PURPOSE Concurrent and construct validity of a kinematic exertional observation procedure was examined for 10- to 14-yr-old female (N = 22) and male (N = 22) healthy children. METHODS A load-incremented treadmill test protocol employing speed/grade changes every 3 min was used. RPE for the overall body (RPE-Overall), legs (RPE-Legs), and chest (RPE-Chest)(More)
BACKGROUND As the likelihood of terrorist acts increases, prehospital personnel have been forced to train in the proper use of chemical-resistant personal protective equipment (PPE). This protective ensemble has been reported to be physiologically taxing for the wearer, imposing an additional thermal load resulting in hypohydration, hyperthermia, and(More)
Isopenicillin N synthase (IPNS) from Cephalosporium acremonium (M(r) 38,400) is an iron-containing enzyme that aerobically catalyzes the four-electron oxidative ring closure reactions of delta-(L-alpha-aminoadipoyl)-L-cysteinyl-D-valine (ACV), forming the beta-lactam and thiazolidine rings of isopenicillin N. Here, we report Fe K-edge X-ray absorption(More)
The FeZn derivative of purple acid phosphatase from porcine uterus (FeZnUf) and its phosphate complex (FeZnUf.PO4) have been characterized by X-ray absorption spectroscopy at both the iron and zinc K-edges, to gain insight into the nature of the FeZn active site as well as the phosphate binding mode. Pre-edge data show that both FeZnUf and FeZnUf.PO4 have a(More)
This investigation developed statistical models to estimate one repetition maximum (1 RM) muscular strength using submaximal ratings of perceived exertion (RPE) as predictor variables. Ten- to 14-year-old girls (n = 35) and boys (n = 35) performed two sets (10 repetitions) of biceps curl (BC) and knee extension (KE) exercise using weights approximating 30%(More)
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