The Effects of a Plyometric Training Program on Jump Performance in Collegiate Figure Skaters: A Pilot Study

International Journal of Exercise Science 9(2): 175-186, 2016. Plyometric training has been implemented to increase jump height in a variety of sports, but its effects have not been researched in figure skating. The purpose of this study was to determine the effects of a plyometric training program on on-ice and off-ice jump performance. Six collegiate figure skaters (19.8±1.2 years; 164.7±4.9 cm; 60.3±11.6 kg) completed a six-week sport-specific plyometric training program, consisting of low to moderate intensity plyometric exercises, while eight collegiate figure skaters (21.1±3.9 years; 162.6±6.0 cm; 60.4±6.1 kg) served as the control group. Significant increases were found for vertical jump height, standing long jump distance, (F = 31.0, p \u3c 0.001), and flight time (F = 11.6, p = 0.007). No significant differences were found for self-reported jump evaluation (p = 0.101). Six weeks of plyometric training improved both on-ice and off-ice jump performance in collegiate figure skaters, while short-term skating training alone resulted in decreases. These results indicate that figure skaters could participate in off-ice plyometric training

Integration and marginality: Narratives of commuter students.

As an attempt to understand the experience of the commuter, a qualitative design was selected, with a phenomenological approach. Six commuter students, between the ages of eighteen and twenty-four, were selected to participate in three separate interviews: two freshman, two seniors and two college dropouts.Some of the findings suggest that the commuter students experienced a degree of marginality. Of four themes identified by Schlossberg, Rosenberg and McCullough three were apparent in the participants. These were: importance, appreciation, and attention. Also, three emergent themes developed in the course of the study: the interaction of the social and academic environments, lack of communication directed toward commuters, and commuters' approach to dealing with the lack of social engagement.While this study was based on Tinto's model of attrition and Kalsner's reoccurring themes of student attrition, it sought to fill a void that exists in the research. It was proposed that the experiences of commuter students may lead to feelings of marginality that moves them toward a greater likelihood of attrition.Additional data were collected from two focus groups designed to mirror the makeup of the interviewees. The collected data were transcribed and coded in a constant comparative approach.The purpose of the proposed study was to investigate the experience of the commuter student attempting to integrate and adjust to the social and academic environment of higher education. Many students fail to make this adjustment and do not persevere in their education. This entails significant losses to the individual students, their institutions and society at large

Power Training and Functional Performance in Middle Aged Women: A Pilot Study

International Journal of Exercise Science 9(3): 327-335, 2016. Muscular power is a key component of functional performance (FP) and fall risk reduction. The present study investigated the effect that power training with medicine balls had on body composition and FP in middle-age females. 10 women were divided into a control group (n=4, age=59.8+3.6) and an intervention group (n=6, age=59.5+3.6) in this 6-week study. The intervention group completed a medicine ball training program two times a week. Body composition and FP tests were administered prepost. Data was analyzed using a series of Wilcoxon Signed Ranks test and Cohen’s d test for effect size. The 6-week training program increased functional performance. The intervention group exhibited increases in the Up and Go test (p\u3c.05) (Cohen’s d=1.76), as well as maximum (p\u3c.05) (Cohen’s d=-1.52) and average (p\u3c.05) (Cohen’s d=-1.32) distance thrown on the seated medicine ball throw. Middle-aged females can experience significant improvements in functional abilities after 6 weeks of participation in a medicine ball training program that includes both resistance and power training

The AMCIS 2003 Panels on IS Education-I: Let Us Not Throw Out the Baby with the Bath Water: Information, Technology, and Systems All Matter in the Core IS Course

Recent discussion about MIS centers on its role as an academic discipline and the utility of the core IS course in undergraduate business programs. This article presents a summary of a panel discussion at the AMCIS 2003 meeting about these issues. In includes the results of a survey on what elements of the IS 2002.1 Introduction to MIS course are being used that was presented. It also presents the discussions among panel participants and the audience and the panelists emerging perspective on the topic. Some advocate a reduction in the focus on systems and technology in the core IS course. However, we believe that this view is an over-reaction to concerns about the course, and suggest (as did many before us) that systems theory is a central organizing them of the core IS course. We believe that the response by the field should not be to water down our core course, but to identify our contribution and highlight it. To this end, we offer a concise statement of what we believe is the heart of the core IS course

Serum levels of phosphorus, parathyroid hormone, and calcium and risks of death and cardiovascular disease in individuals with chronic kidney disease a systematic review and meta-analysis

Context: Clinical practice guidelines on the management of mineral and bone disorders due to chronic kidney disease recommend specific treatment target levels for serum phosphorus, parathyroid hormone, and calcium. Objective: To assess the quality of evidence for the association between levels of serum phosphorus, parathyroid hormone, and calcium and risks of death, cardiovascular mortality, and nonfatal cardiovascular events in individuals with chronic kidney disease. Data Sources: The databases of MEDLINE (1948 to December 2010) and EMBASE (1947 to December 2010) were searched without language restriction. Hand searches also were conducted of the reference lists of primary studies, review articles, and clinical guidelines along with full-text review of any citation that appeared relevant. Study Selection: Of 8380 citations identified in the original search, 47 cohort studies (N=327 644 patients) met the inclusion criteria. Data Extraction: The characteristics of study design, participants, exposures, and covariates together with the outcomes of all-cause mortality, cardiovascular mortality, and nonfatal cardiovascular events at different levels of serum phosphorus, parathyroid hormone, and calcium were analyzed within studies. Data were summarized across studies (when possible) using random-effects meta-regression. Data Synthesis: The risk of death increased 18% for every 1-mg/dL increase in serum phosphorus (relative risk [RR], 1.18 [95% confidence interval {CI}, 1.12-1.25]). There was no significant association between all-cause mortality and serum level of parathyroid hormone (RR per 100-pg/mL increase, 1.01 [95% CI, 1.00-1.02]) or serum level of calcium (RR per 1-mg/dL increase, 1.08 [95% CI, 1.00-1.16]). Data for the association between serum level of phosphorus, parathyroid hormone, and calcium and cardiovascular death were each available in only 1 adequately adjusted cohort study. Lack of adjustment for confounding variables was not a major limitation of the available studies. Conclusions: The evidentiary basis for a strong, consistent, and independent association between serum levels of calcium and parathyroid hormone and the risk of death and cardiovascular events in chronic kidney disease is poor. There appears to be an association between higher serum levels of phosphorus and mortality in this population. ©2011 American Medical Association. All rights reserved

Does Body Mass Index Influence the Physiological and Perceptual Demands Associated with Defensive Tactics Training in State Patrol Officers?

International Journal of Exercise Science 11(6): 319-330, 2018. The purpose of this investigation was to determine the physiological and perceptual demands associated with defensive tactics (DEFTAC) training among state patrol officers of different BMI (body mass index) categories. Twenty-four male state patrol officers (n = 24, age 36.00 + 7.86 yrs) voluntarily agreed to participate in data collection during a DEFTAC gauntlet. Anthropometric information (height (HT) 182.19 + 7.43 cm and weight (WT) 96.31 + 17.45 kg), body mass index (BMI), peak and average heart rates, duty weight, BLa, and RPE, were recorded. Officers were then divided into two-groups (Healthy BMI (BMI ≤ 25), n = 12, Overweight (BMI ≥ 25), n = 12). Analyses of covariance (ANCOVAs) were conducted to determine the effect of BMI on the outcome variables. Furthermore, a Pearson’s product-moment correlation coefficient was also conducted to determine if significant relationships between RPE, BLa, and HR existed between groups. Significant mean score differences between healthy and overweight officers were found in measures of age [t(22) 4.12, p\u3c 0.01, R2 = .44], and weight of duty gear [t(21) 3.96, p\u3c0.01, R2 = .33]. When used as a covariate, age also predicted average HR% [ F(1, 21) = 6.19, p \u3c .05, partial η2 = .24]. Significant relationships were found in the healthy group between RPE and DEFTAC time, DEFTAC time and score, as well as score and post BLa. Significant relationships for the overweight group between peak (HR) percentage and post BLa, peak (HR) percentage and RPE, DEFTAC time and duty weight, and between weight and DEFTAC time. The results of this study suggest that overweight officers may have lower DEFTAC scores when compared to their healthy counterparts. Based on the results, it seems reasonable to compare physiological variables from this population to those from combative sports as well as for officers to achieve and maintain a healthy BMI value in order to improve individual DEFTAC performance

Unstable density-driven flow in heterogenous porous media: A stochastic study of the Elder (1967b) "short heater" problem

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