Assessing Youth Sprint Ability–Methodological Issues, Reliability and Performance Data

2011 ◽  
Vol 23 (4) ◽  
pp. 442-467 ◽  
Author(s):  
Michael C. Rumpf ◽  
John B. Cronin ◽  
Jon L. Oliver ◽  
Michael Hughes
Keyword(s):  
Sprint Performance ◽  
Performance Data ◽  
Future Research ◽  
Methodological Issues ◽  
Youth Athletes ◽  
And Performance ◽  
Acceptable Reliability ◽  
And Training ◽  
Insight Into ◽  
Sprint Ability

The primary purpose of this paper was to provide insight into the methodological issues and associated reliability of assessments used to quantify running sprint ability in youth athletes aged 8–18 years. Over-ground sprinting was the most reliable and common used choice of assessment to measure sprint performance of youth. In addition, the performance data of those athletes over distances ranging from 5 to 40 meters was collated from 34 published articles and tabulated with regards to the athlete’s chronological age. Torque or nonmotorized treadmills have been used to quantify sprint performance in youth with acceptable reliability, this technology providing deeper insight into sprint kinetics and kinematics; however there is limited performance data on youth using the torque and the nonmotorized treadmill. It is suggested that future research should use this technology in youth to better understand changes associated with growth, maturation and training.

scholarly journals Weight-for-Age Percentiles and Experience Impact Youth Wrestling Record over the Course of a Season (P23-010-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Heather Reymunde Wittmer ◽  
Steven Reggie ◽  
Erin O'Hora ◽  
Diane DellaValle
Keyword(s):  
Small Sample ◽  
Future Research ◽  
Hydration Status ◽  
Years Of Experience ◽  
Performance Variables ◽  
Funding Sources ◽  
Significant Difference ◽  
And Performance ◽  
Insight Into ◽  
Weight For Age

Abstract Objectives Youth in weight-classified combat sports may attempt to change body weight to gain performance advantage. Differences between weight-for-age percentiles (WAP) and performance in youth wrestlers remains unknown. The purpose of this retrospective study was to examine the differences in performance between wrestlers above and below the 50th WAP over a wrestling season. Methods Participants included 22 male wrestlers from a team in the Pennsylvania Elementary Wrestling League (8.8 ± 2.1 years of age, 2.3 ± 2.3 years of experience). Retrospective data included age, weight, years of experience, family history, and frequency of wins, losses and forfeits over a 3-month wrestling season. Average WAP were calculated using CDC growth charts and wrestlers were assigned to one of two groups <50 th WAP (n = 10) and >50 th WAP (n = 12). Wrestlers were also categorized into two groups in terms of experience (≤2 years, >2 years). Differences between the two groups in performance variables were examined using ANOVA. Results We observed a significant difference between <50th and >50th WAP groups in total forfeits (0.6 ± 1.0; 2.0 ± 1.5, respectively, P < 0.02). There was an interaction observed between WAP group and years of experience in number of total forfeits (P < 0.132) such that wrestlers with <2 years of experience and <50th WAP experienced fewer total forfeits (0.3 ± 0.8) than those >50th percentile (2.0 ± 1.4). Those with more experience in <50th WAP also had fewer forfeits compared to >50th WAP. A similar interaction was observed between WAP group and years of experience in number of total losses (P < 0.187). Wrestlers with <2 years of experience, and <50th WAP experienced more total losses (4.8 ± 1.5) than wrestlers >50th WAP (2.0 ± 1.4). Those with more experience and <50th WAP experienced fewer losses than those >50th WAP. Conclusions We observed a significant difference in forfeits between average WAP groups and an interaction between experience and WAP groups in losses and forfeits in this small sample. Further research is needed to provide insight into how WAP mayaffect performance in this population. Future research may include a larger population, and variables such as BMI-for-age, hydration status, nutrition, body composition and additional factors that affect both weight and performance. Funding Sources n/a.

Applying metaphor analysis to academic literacy research

2018 ◽  
Vol 8 (2) ◽  
pp. 286-311
Author(s):  
Wan Wan ◽  
Sarah Turner
Keyword(s):  
Critical Review ◽  
Academic Literacy ◽  
Future Research ◽  
Methodological Issues ◽  
Metaphor Analysis ◽  
The Past ◽  
Methodological Tool ◽  
Key Issues ◽  
Literacy Research ◽  
Insight Into

Abstract The article aims to provide a critical review of 23 studies that have used metaphor analysis to provide insight into academic literacy research over the past 30 years. It begins by summarising some of the key issues and trends that have been addressed using metaphor analysis, grouping these into two broad categories: metaphor as a methodological tool, and metaphor as an intervention tool. Methods of metaphor collection and analysis are then outlined and discussed. It is noted that an increasing number of studies in this area have identified methodological issues resulting from what Armstrong et al. (2011) term ‘the subjectivity problem’, and the article thus discusses how such issues may be resolved in future research.

scholarly journals Insight into the workforce advancing fields of science and technology

2020 ◽  
Author(s):  
Frank W. Pfrieger
Keyword(s):  
Scientific Literature ◽  
Science And Technology ◽  
Publication Output ◽  
Bibliographic Databases ◽  
Future Research ◽  
Research Teams ◽  
Growing Body ◽  
And Performance ◽  
Context Specific ◽  
Insight Into

AbstractAdvances in biomedicine and other fields of science and technology depend on research teams and their peer-reviewed publications. The scientific literature represents an invaluable socioeconomic resource guiding future research. Typically, this growing body of information is explored by queries in bibliographic databases concerning topics of interest and by subsequent scrutiny of matching publications. This approach informs readily about content, but leaves the workforce driving the field largely unexplored. The hurdle can be overcome by a transparent team-centered analysis that visualizes the teams working in a field of interest and that delineates their genealogic and collaborative relations. Context-specific, but citation-independent metrics gauge team impact and reveal key contributors valuing publication output, mentorship and collaboration. The new insight into the structure, dynamics and performance of the workforce driving research in distinct disciplines complements ongoing efforts to mine the scientific literature, foster collaboration, evaluate research and guide future policies and investments.

And One More for the Road: Commentary on the Special Issue on Alcohol and Eyewitness Memory

2019 ◽  
Author(s):  
Steve M. J. Janssen ◽  
Michele Anne
Keyword(s):  
Cognitive Processes ◽  
Alcohol Intoxication ◽  
Experimental Studies ◽  
Eyewitness Memory ◽  
Future Research ◽  
Special Issue ◽  
Methodological Issues ◽  
The Road ◽  
Dependent Variables ◽  
Insight Into

Studies examining the influences of alcohol intoxication have reported mixed findings on whether it impairs eyewitness memory. Although the studies in this Special Issue investigated different questions and tested different variables, the findings of these studies collectively provide insight into mechanisms and methodological issues that may explain the ambiguous findings of alcohol intoxication and eyewitness memory. In this commentary, we first describe the experimental studies of this Special Issue. We then discuss four mechanisms that could underlie those mixed findings (alcohol myopia, disinhibition, hypervigilance, meta-cognitive processes at retrieval). Last, we address methodological issues that may have contributed to those ambiguous findings (i.e., alcohol intoxication levels, automatic processing of stimuli, sensitivity of dependent variables, and possible interactions with arousal), and provide suggestions for future research to address these issues.

Professional Athletes’ Social Media Use and Player Performance: Evidence From the National Football League

2020 ◽  
pp. 1-27
Author(s):  
Joon Ho Lim ◽  
Leigh Anne Donovan ◽  
Peter Kaufman ◽  
Chiharu Ishida
Keyword(s):  
Social Media ◽  
Fixed Effects ◽  
National Football League ◽  
Negative Relationship ◽  
Future Research ◽  
Media Content ◽  
And Performance ◽  
Player Performance ◽  
Game Performance ◽  
Insight Into

To examine how the level of humility expressed through athletes’ social media postings and post volume is associated with the athletes’ in-game performance, the authors collected National Football League players’ social media activities throughout one season, in addition to player performance and profile information. To account for the multilevel and panel structure of the data, they conducted a series of fixed-effects panel models. In addition to a negative relationship between social media posting frequency and performance, the authors found that players who post social media content with a higher level of humility are more likely to have better performances. However, this humility–performance association follows an inverted U-shaped relationship. The results provide insight into how critical athletes’ social media activity is for in-game performance. This study also provides important implications for athletes, team coaches, staff, and managers and provides guidance for future research.

Multiple-Sprint Work: Methodological, Physiological, and Experimental Issues

2008 ◽  
Vol 3 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Mark Glaister
Keyword(s):  
Physiological Responses ◽  
Physical Characteristics ◽  
Future Research ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
Training Strategies ◽  
Type Of Exercise ◽  
And Training ◽  
Sprint Ability

Tests of repeated-sprint ability provide a simple way to evaluate the basic physical characteristics of speed and endurance necessary to excel in various multiple-sprint sports. Furthermore, such tests help overcome the complications associated with field-based evaluations of this type of exercise. Nevertheless, despite over 40 y of research, many issues regarding our understanding of multiple-sprint work remain unresolved. This commentary aims to raise awareness of issues relating to methodology, physiological responses, and the effectiveness of various ergogenic and training strategies; to promote a greater understanding; and to drive future research.

A program evaluation of a recreation-based military family camp

2019 ◽  
Vol 18 (4) ◽  
pp. 19-26
Author(s):  
Kathryn Mitchell, MS, CTRS ◽  
Jasmine Townsend, PhD, CTRS, CARSS-I ◽  
Brent Hawkins, PhD, CTRS ◽  
Marieke Van Puymbroeck, PhD, FDRT, CTRS
Keyword(s):  
Family Relationships ◽  
Military Families ◽  
Therapeutic Recreation ◽  
Military Family ◽  
Future Research ◽  
High Importance ◽  
And Performance ◽  
Program Components ◽  
The Military ◽  
Insight Into

Camps may be beneficial environments to provide military families with opportunities to participate in meaningful leisure to revitalize family relationships and to form connections within the military family community. While research has investigated the effects of these programs on veterans and families, limited research incorporates consumer-based evaluations of the service provider. Thus, the purpose of this study was to perform an evaluation of a therapeutic, recreation-based military family camp. A multiphase importance performance analysis (IPA) was implemented with 19 individuals who attended the camp. Participants rated program components using a 5-point Likert scale. Results revealed high importance and performance scores on all program components, as well as highlighted areas of programing with opportunity for maintenance and improvement. These findings provide recommendations for the improvement of this camp, as well as insight into future research and/or evaluations of military family camp programing.

scholarly journals Territoriality, motivational climate, and idea implementation: We reap what we sow

2017 ◽  
Vol 45 (11) ◽  
pp. 1919-1932 ◽  
Author(s):  
Wei Wei Huo ◽  
Huang Yi ◽  
Chenghao Men ◽  
Jinlian Luo ◽  
Xianmiao Li ◽  
...  
Keyword(s):  
Research And Development ◽  
Positive Relationship ◽  
Motivational Climate ◽  
Future Research ◽  
Social Alienation ◽  
Development Teams ◽  
And Performance ◽  
The Relationship ◽  
Insight Into

Drawing on the integrated perspectives of territoriality and motivational climate, we explored the relationship between employees' territoriality and idea implementation. We tested our model with 46 research and development teams in China, comprising 359 employees and their supervisors, who completed measures of territoriality, social alienation, motivational climate (specifically, performance climate and mastery climate), and idea implementation. The results showed that social alienation mediated the relationship between territoriality and idea implementation, and that mastery climate and performance climate moderated the positive relationship between territoriality and social alienation. Our findings not only provide insight into the relationship between territoriality and idea implementation, but also clarify the effect of motivational climate on this relationship. Implications for practice and future research are discussed.

Layout and performance data

2017 ◽  
Author(s):  
Ernst U. Schlunder
Keyword(s):  
Performance Data ◽  
And Performance
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