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71.
Language disabilities in men of eminence 总被引:3,自引:3,他引:0
Lloyd J. Thompson M.D. 《Annals of dyslexia》1969,19(1):113-120
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Marcus P. Hannon Daniel J. Carney Stephen Floyd Lloyd J. F. Parker John McKeown Barry Drust 《Journal of sports sciences》2020,38(11-12):1326-1334
ABSTRACT For the first time we aimed to: (1) assess fat-free mass (FFM) and RMR in youth soccer players, (2) compare measured RMR to estimated RMR using previously published prediction equations, and (3) develop a novel population-specific prediction equation. In a cross-sectional design, 99 males from a Premier League academy underwent assessments of body composition (DXA) and RMR (indirect-calorimetry). Measured RMR was compared to estimated values from five prediction equations. A novel RMR prediction equation was developed using stepwise multiple regression. FFM increased (P<0.05) between U12 (31.6±4.2 kg) and U16 (56.3±5.3 kg) after which no further increases occurred (P>0.05). RMR in the U12s (1655±195 kcal.day?1), U13s (1720±205 kcal.day?1) and U14s (1846±218kcal.day?1) was significantly lower than the U15s (1957±128 kcal.day?1), U16s (2042±155 kcal.day?1), U18s (1875±180 kcal.day?1) and U23s (1941±197 kcal.day?1) squads (P>0.05). FFM was the single best predictor of RMR (r2=0.43; P<0.01) and was subsequently included in the novel prediction equation: RMR (kcal.day?1) = 1315 + (11.1 x FFM in kg). Both FFM and RMR increase from 12-16 years old, thus highlighting the requirement to adjust daily energy intake to support growth and maturation. The novel prediction RMR equation developed may help to inform daily energy requirements. 相似文献
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Geoffrey Lloyd 《Metascience》2016,25(2):247-249
78.
A comparative study of baseball bat performance 总被引:2,自引:2,他引:0
Alan M. Nathan Joseph J. Crisco R. M. Greenwald D. A. Russell Lloyd V. Smith 《Sports Engineering》2011,13(4):153-162
The results of a comparative study of five aluminum and one wood baseball bats are presented. The study includes an analysis
of field data, high-speed laboratory testing, and modal analysis. It is found that field performance is strongly correlated
with the ball–bat coefficient of restitution (BBCOR) and only weakly correlated with other parameters of the bat, suggesting
that the BBCOR is the primary feature of a bat that determines its field performance. It is further found that the instantaneous
rotation axis of the bat at the moment of impact is very close to the knob of the bat and that the rotational velocity varies
inversely with the moment of inertia of the bat about the knob. A swing speed formula is derived from the field data and the
limits of its validity are discussed. The field and laboratory measurements of the collision efficiency are generally in good
agreement, as expected on theoretical grounds. Finally, the BBCOR is strongly correlated with the frequency of the lowest
hoop mode of the hollow bats, as predicted by models of the trampoline effect. 相似文献
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Samantha E. Goldman Carrie A. Glover Blair P. Lloyd Erin E. Barton Maria P. Mello 《Exceptionality》2018,26(3):162-175
Low-income, minority families are underrepresented in the literature on parent training for school-aged children with autism spectrum disorder (ASD). Although the use of visual supports, such as visual schedules, is considered to be an evidence-based practice for children with ASD in school, it is not known whether this strategy is effective for minority, low-income families when implemented by the parent in the home setting. This study used a multiple-baseline across routines design replicated across two African American child-mother dyads to examine the effects of a parent-implemented visual schedule procedure on child independent schedule use and between-activity transitions. Parent participants were trained to implement a visual schedule intervention during home routines. Although a functional relation was demonstrated across routines for one mother-child dyad, results varied across participants, highlighting the importance of treatment fidelity. Implications for future research, including the challenges involved in parent-implemented interventions in low-income settings for minority children with ASD, are addressed. 相似文献