Short-term reliability of inflammatory mediators and response to exercise in the heat     

Joshua H. Guy  Andrew M. Edwards  Catherine M. Miller  Glen B. Deakin  David B. Pyne 《Journal of sports sciences》2017,35(16):1622-1628

Prospective application of serum cytokines, lipopolysaccharide (LPS), and heat shock proteins (eHSPs) requires reliable measurement of these biomarkers that can signify exercise-induced heat stress in hot conditions. To accomplish this, both short-term (7 day) reliability (at rest, n = 12) and the acute responsiveness of each biomarker to exercise in the heat (pre and post 60-min cycling, 34.5°C and 70% RH, n = 20) were evaluated. Serum was analysed for the concentration of C-reactive protein (CRP), interleukin-6 (IL-6), heat shock protein 72 (eHSP72), immunoglobulin M (IgM) and LPS. Test–retest reliability was determined as the coefficient of variation (CV). Biomarkers with the least short-term within-participant variation were IL-6 (19%, ±20%; CV, ±95% confidence limits (CL)) and LPS (23%, ±13%). Greater variability was observed for IgM, eHSP72 and CRP (CV range 28–38%). IL-6 exhibited the largest increase in response to acute exercise (95%, ±11%, P = < 0.001) and although CRP had a modest CV (12%, ±7%), it increased substantially post-exercise (P = 0.02, ES; 0.78). In contrast, eHSP72 and LPS exhibited trivial changes post-exercise. It appears variation of common inflammatory markers after exercise in the heat is not always discernible from short-term (weekly) variation.  相似文献   

Exposing athletes to playing form activity: outcomes of a randomised control trial among community netball teams using a game-centred approach     

Andrew Miller  Stephen Harvey  David Morley  Roland Nemes  Maggie Janes  Narelle Eather 《Journal of sports sciences》2017,35(18):1846-1857

This study evaluated whether exposing junior netball players to greater amounts of competition relevant activity (playing form activity) had an effect on game play outcomes and session involvement. A group-randomised controlled trial in one junior netball club in the Hunter Region, NSW, Australia. Ninety female athletes (mean age = 9.04 years, SD 1.53) were randomised by team (n = 11) into the intervention (n = 41) or 9-week wait-list control (n = 49) condition. The Professional Learning for Understanding Games Education into Sport (PLUNGE into Sport) programme was undertaken in the first half of nine training sessions (9 × 30 min). The intervention exposed athletes to playing form activity through a coach development programme within training sessions. Athletes’ decision-making, support and skill outcomes during a small-sided invasion game, and session involvement (pedometer step/min), were measured at baseline and 9-week follow-up. Linear mixed models revealed significant group-by-time intervention effects (P < 0.05) for decision-making (d = 0.4) and support (d = 0.5) during game play, and in-session activity (d = 1.2). An intervention exposing athletes to greater levels of playing form activity, delivered via a coach education programme, was efficacious in improving athlete decision-making and support skills in game play and increasing athlete involvement during sessions.  相似文献   

A prospective examination of the impact of high levels of exercise training on sedentary behaviour     

Ann M. Swartz  Nora E. Miller  Young IK Cho  Whitney A. Welch  Scott J. Strath 《European Journal of Sport Science》2017,17(2):222-230

The aim of this study is to determine changes in sedentary behaviour in response to extensive aerobic exercise training. Participants included adults who self-selected to run a marathon. Sedentary behaviour, total activity counts and physical activity (PA) intensity were assessed (Actigraph GT3X) for seven consecutive days during seven assessment periods (?3, ?2, and ?1 month prior to the marathon, within 2 weeks of the marathon, and +1, +2, and +3 months after the marathon). Models were fitted with multiple imputation data using the STATA mi module. Random intercept generalized least squares (GLS) regression models were used to determine change in sedentary behaviour with seven waves of repeated measures. Results: Twenty-three individuals (mean?±?S_x: 34.4?±?2.1y, 23.0?±?1.9% fat, 15 women, 8 men) completed the study. Marathon finishing times ranged from 185 to 344 minutes (253.2?±?9.6 minutes). Total counts in the vertical axis were 1,729,414 lower one month after the race, compared with two months prior to the race (peak training). Furthermore, counts per minute decreased by 252.7 counts·minute^?1 during that same time period. Daily sedentary behaviour did not change over the seven assessment periods, after accounting for age, gender, per cent body fat, wear time, marathon finishing time, and previous marathon experience. This prospective study supports the notion that PA and sedentary behaviours are distinct, showing that sedentary behaviour was not impacted by high levels of aerobic training.  相似文献   

Seven hints for control of training projects     

Richard H. Miller 《Performance Improvement》1985,24(5):24-27

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Collecting the Current for History Museums     

Steven Miller 《Curator: The Museum Journal》1985,28(3):157-167

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The Development of Video‐training: The ICEM Survey     

Maurice Fauquet 《Educational Media International》2013,50(4):167-177

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Living in diversity: lesson plans for secondary schools     

Joyce Miller 《British Journal of Religious Education》2012,34(1):104-105

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TALKING ABOUT OUR TROUBLES: USING VIDEO-BASED DIALOGUE TO BUILD PRESERVICE TEACHERS' PROFESSIONAL KNOWLEDGE     

Dr. Matthew James Miller 《The Teacher Educator》2013,48(3):143-163

This study investigates the preservice teacher learning in the context of conversations about their field-based challenges. First, a review of the literature explores studies that highlight the role of evidence-based conversation as a mechanism to approach the inevitable problems faced by teachers in the classroom. The subsequent case study provides an analysis of how a group of preservice teachers approached a colleague's challenge through a structured conversation and used digital videotapes and artifacts to add specificity to their analysis. The study's implications suggest how constructive and critical conversations between prospective teachers can play an important role in their professional development.  相似文献   

A Review of “Why Don't Students Like School?: A Cognitive Scientist Answers Questions About How the Mind Works and What It Means for the Classroom”     

Shervette Miller 《Multicultural Perspectives》2013,15(3)

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Strategies and Techniques Employed Within the Member Countries of ICEM for Introducing Educational Technology into Teacher Training Programmes     

Maurice Wenger 《Educational Media International》2013,50(3):97-106

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