177,274 research outputs found
Statistical analyses in the physiology of exercise and kinanthropometry
No full textThis is an Accepted Manuscript version of the following article, accepted for publication in [Journal of Sports Sciences]. [Winter, E., Eston, R., & Lamb, K. L. (2001). Statistical analyses in the physiology of exercise and kinanthropometry. Journal of Sports Sciences, 19(10), 761-775.]. It is deposited under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way
The perceptual response to exercise of progressively increasing intensity in children aged 7-8 years: validation of a pictorial curvilinear ratings of perceived exertion scale
No full textThis study assessed the validity of the Eston-Parfitt (E-P) curvilinear Ratings of Perceived Exertion (RPE) Scale and a novel marble quantity task to provide estimates of perceived exertion during cycle ergometry. Fifteen children aged 7-8 years performed a discontinuous incremental graded-exercise test, and reported exertional ratings at the end of each minute. Significant increases in physiological and perceptual data were observed with increasing work rate. The relationship between work rate and marbles was curvilinear (mean R(2)=.94), supporting the theoretical justification for the E-P Scale. Strong linear (R(2)=.93) and curvilinear (R(2)=.94) relationships between RPE from the E-P Scale and work rate confirmed the robustness of the E-P Scale. Valid exertional ratings may be obtained using the E-P Scale with young children. The novel marble quantity task offers an alternative method of deriving perceived exertion responses in children
Growth, Maturation, and Physical Fitness
No full textThis is the author accepted manuscript. The final version is available from Routledge via the DOI in this record. This chapter outlines the methods to assess growth and maturation. Biological maturation varies with the biological system that is selected and comprises the assessment of sexual, morphological, dental, or skeletal maturation. The chapter describes how measures of physical fitness and performance are impacted by growth and maturation. It also outlines the methods used to examine body weight status and composition. The chapter examines laboratory-based testing protocols to determine and interpret aerobic and anaerobic fitness in children and adolescents. Although more commonly used in the research setting, laboratory-based measures of physical fitness in children and adolescents have typically focused on developing protocols to measure aerobic and anaerobic fitness. Three of the key parameters of aerobic fitness are: maximal oxygen uptake, blood lactate threshold, and oxygen cost of exercise. The chapter presents field-based testing batteries for measuring physical fitness in children and adolescents
Prediction of peak oxygen uptake in children using submaximal ratings of perceived exertion during treadmill exercise
No full textPurpose: This study assessed the utility of the Children’s Effort Rating Table (CERT) and the Eston-Parfitt (EP) Scale in estimating peak oxygen uptake (V• O2peak) in children, during cardiopulmonary exercise testing (CPET) on a treadmill. Methods: Fifty healthy children (n=21 boys; 9.4 ± 0.9 y) completed a continuous, incremental protocol until the attainment of V• O2peak. Oxygen uptake (V• O2) was measured continuously, and Ratings of Perceived Exertion (RPE) were estimated at the end of each exercise stage using the CERT and the EP Scale. Ratings up to- and including RPE 5 and 7, from both the CERT (CERT 5, CERT 7) and EP Scale (EP 5, EP 7), were linearly regressed against the corresponding V• O2, to both maximal RPE (CERT 10, EP 10) and terminal RPE (CERT 9, EP 9). Results: There were no differences between measured- and predicted V• O2peak from CERT 5, CERT 7, EP 5 and EP 7 when extrapolated to either CERT 9 or EP 9 (P > .05). Pearson’s correlations of r = 0.64-0.86 were observed between measured- and predicted V• O2peak, for all perceptual ranges investigated. However, only EP 7 provided a small difference when considering the Standard Error of Estimate, suggesting that the prediction of V• O2peak from EP 7 would be within 10% of measured V• O2peak. Conclusions: Although robust estimates of V• O2peak may be elicited using both the CERT and EP Scale during a single CPET with children, the most accurate estimates of V• O2peak occur when extrapolating from EP 7
Eston Lovingood, Oldest On Campus Student in April 1963
No full textJacksonville State College (now Jacksonville State University)\u27s oldest on campus student in April 1963 was Mr. Eston Lovingood of Childersburg. In 1960 Mr. Lovingood retired from the army, a Lieutenant Colonel in Korea at retirement, to attend college a second time in order to obtain a teacher\u27s certificate to teach high school.https://digitalcommons.jsu.edu/lib-ac-histimg/28447/thumbnail.jp
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
A perceptually-regulated exercise test predicts peak oxygen uptake in older active adults
No full textPeak oxygen uptake (VO2peak) is reliably predicted in young and middle-aged adults using a submaximal perceptually-regulated exercise test (PRET). It is unknown whether older adults can use a PRET to accurately predict VO2peak. In this study, the validity of a treadmill-based PRET to predict VO2peak was assessed in 24 participants (65.2 ± 3.9 years, 11 males). The PRET required a change in speed or incline corresponding to ratings of perceived exertion (RPE) 9, 11, 13, and 15. Extrapolation of submaximal VO2 from the PRET to RPE endpoints 19 and 20 and age-predicted HRmax were compared with measured VO2peak. The VO2 extrapolated to both RPE19 and 20 over-predicted VO2peak (p < .001). However, extrapolating VO2 to age-predicted HRmax accurately predicted VO2peak (r = .84). Results indicate older adults can use a PRET to predict VO2peak by extrapolating VO2 from submaximal intensities to an age-predicted HRmax.Ashleigh E. Smith, Roger G. Eston, Belinda Norton, Gaynor Parfitt
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
- …
