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Product and environmental social performance: Varying effect on firm performance
Corporate social performance (CSP) consists of actions in different domains that vary in the information they provide stakeholders, and hence, in their effect on firm performance. To demonstrate this, the authors examine the impact of CSP on firm performance in two areas—the product and the environment, referred to as product social performance (PSP) and environmental social performance (ESP), respectively. PSP has a stronger positive impact on firm performance compared to ESP. The findings using disaggregated measures of PSP and ESP indicate negativity bias in that PSP weakness has a stronger negative impact on firm performance compared to PSP strength.
Journal Article
Ergogenic Effects of Combined Caffeine Supplementation and Motivational Music on Anaerobic Performance in Female Handball Players: A Randomized Double-Blind Controlled Trial
Listening to self-selected motivational music (SSMM) during warm-ups and caffeine (CAF) intake prior to exercise can independently enhance athletic performance among female athletes. Likewise, the potential synergistic effects of these interventions have not yet been thoroughly examined. Objective: The purpose of the study was to assess the independent and combined effects of SSMM during warm-up and pre-exercise CAF intake on maximal short-duration performance in female athletes. Methods: Seventeen female handball players (aged 16.7 ± 0.4 years) participated in a randomized, double-blind, crossover study. Each athlete completed four conditions: (i) placebo (PLA) with no interventions, (ii) music and placebo (MUS), (iii) caffeine intake only (CAF), and (iv) a combination of music and caffeine (MUS + CAF). Performance assessments included the countermovement jump (CMJ), modified agility t-test (MAT), repeated-sprint ability (RSA) test (mean and peak sprint performance), and rating of perceived exertion (RPE). Results: The MUS (p > 0.05; p < 0.01; p < 0.01; p < 0.001, respectively), CAF (all p < 0.001), and MUS + CAF (all p < 0.01) conditions significantly outperformed the PLA condition in CMJ, MAT, RSA mean, and RSA peak measures. No significant differences were observed between the CAF and MUS + CAF conditions; however, the best performances were recorded during MUS + CAF. RPE scores remained consistent across conditions. Conclusions: Warm-up routines incorporating either SSMM or a moderate dose of CAF (6 mg·kg−1) enhance anaerobic performance in female athletes. While both interventions are effective independently, CAF intake elicits a stronger effect. Although no significant difference was demonstrated for this combination, the concurrent use of SSMM and CAF appears to produce a potential effect, emerging as the most effective strategy for optimizing anaerobic performance.
Journal Article
Adaptive cognitive tasks for mental fatigue: An innovative paradigm for cognitive loading in human performance
Mental fatigue (MF) can impair cognitive and physical performance in sport. We tested the hypothesis that a shorter adaptive Time Load Dual Back (TLDB) task induces MF faster than a longer Stroop; and subsequently impairs cognitive and intermittent running performance.
This study employed a randomized within-participant design.
25 trained individuals performed a Yo-Yo test after one of four experimental conditions (30-min Stroop, 20-min and 10-min TLDB tasks, and active control). Cognitive performance was assessed using the Psychomotor Vigilance Task (PVT) before and after the experimental conditions. Measures of mood, workload, MF, RPE, heart rate (HR), heart rate variability (HRV) and blood lactate were collected. ANOVAs determined the effect of the 4 conditions.
Stroop and 20-min TLDB conditions impaired running performance similarly (p = .015), while no differences are reported for 10-min TLDB and Control. No significant differences in physiological parameters were reported during the Yo-Yo test although RPE was significantly higher in the Stroop and 20-min TLDB conditions (p = .014). Stroop and both TLDBs conditions impaired PVT's cognitive performance (p = .029), MF (p = .012), mental demand (p < .001), HR (p = .021) and HRV (p = .033); with 20-min TLDB task having the higher significant impact. Mood alterations were similar between Stroop and TLDB conditions.
Intermittent running (Yo-Yo) and cognitive (PVT) performances, and subjective ratings were impaired by 30-min Stroop and 20-min TLDB tasks; while 10-min TLDB did not to impair performance. Shorter adaptive modes seem to be more effective in inducing MF and could have relevant clinical applications to assess conditions such as traumatic brain injury and concussion.
Journal Article
Carmen abroad : Bizet's opera on the global stage
\"This book was born out of a previous collaboration on Carmen between its two editors: their work on the Peters Edition of the opera. Styled as a 'Performance Urtext' this edition focussed on bringing to the printed page not only the musical text, but also many of the details of how Carmen was first performed. Both editors had thus gone through every bar of the opera with a fine-tooth comb: some sort of follow-up seemed inevitable. The idea of a book on 'Carmen abroad' was hatched, focussed - like the edition of its performance. From the outset we were encouraged by the enthusiastic reception of the idea by Cambridge University Press and we began to approach potential contributors. Then the project trifurcated: not only would we have a book, we would somehow bring together contributors in a conference, and we would have a website. At first an international online video-conference was envisaged but practicalities - not least of time-zone differences - proved insurmountable. An International Initiatives Grant from Cardiff University and a Music & Letters Trust award provided the answer by providing funding for a two-day academic conference which would not have come into being without the energy, fruitful exchanges and support of all our collaborators\"-- Provided by publisher.
BOOK
Are subjective business performance measures justified?
Purpose
– The purpose of this paper is to operationalize the subjective measures of business performance and assessing their justification for use in place of objective measures of business performance.
Design/methodology/approach
– The study is based on a sample survey of 171 companies listed on Bombay Stock Exchange, India. A cross-sectional descriptive research design has been used. Exploratory factor analysis was used to assess the factor structure and dimensionality of objective and subjective measures of business performance. The psychometric properties of these measures and their interrelationship have been assessed through confirmatory factor analysis.
Findings
– The study finds a strong positive correlation between subjective business performance and objective business performance. The study finds it justified to use the subjective measures of business performance.
Research limitations/implications
– Response bias may have crept in because of self-reported measure used for the study. Future researchers may cross-verify the subjective perception of respondents with data available from the records of the firms. Second, the study focuses only on financial and operational indicators of performance. The future studies may widen the scope of business performance by incorporating the interests of other stakeholders like suppliers, government, environment and society in general.
Practical implications
– The strategy researchers confronting the challenge of adopting appropriate measures of business performance can use either or both of subjective and objective performance measures, as suggested in this study. The study has suggestions for strategic decision makers regarding measurement of business performance in terms of financial as well as operational indicators.
Originality/value
– The study operationalizes and validates two measures of performance, namely, subjective business performance and objective business performance. The study contributes to the strategic management literature by providing evidence for association between objective and subjective measures of performance.
Journal Article
Ecdysteroids as non-conventional anabolic agent: performance enhancement by ecdysterone supplementation in humans
Recent studies suggest that the anabolic effect of ecdysterone, a naturally occurring steroid hormone claimed to enhance physical performance, is mediated by estrogen receptor (ER) binding. In comparison with the prohibited anabolic agents (e.g., metandienone and others), ecdysterone revealed to be even more effective in a recent study performed in rats. However, scientific studies in humans are very rarely accessible. Thus, our project aimed at investigating the effects of ecdysterone-containing products on human sport exercise. A 10-week intervention study of strength training of young men (n = 46) was carried out. Different doses of ecdysterone-containing supplements have been administered during the study to evaluate the performance-enhancing effect. Analysis of blood and urine samples for ecdysterone and potential biomarkers of performance enhancement has been conducted. To ensure the specificity of the effects measured, a comprehensive screening for prohibited performance-enhancing substances was also carried out. Furthermore, the administered supplement has been tested for the absence of anabolic steroid contaminations prior to administration. Significantly higher increases in muscle mass were observed in those participants that were dosed with ecdysterone. The same hypertrophic effects were also detected in vitro in C2C12 myotubes. Even more relevant with respect to sports performance, significantly more pronounced increases in one-repetition bench press performance were observed. No increase in biomarkers for liver or kidney toxicity was noticed. These data underline the effectivity of an ecdysterone supplementation with respect to sports performance. Our results strongly suggest the inclusion of ecdysterone in the list of prohibited substances and methods in sports in class S1.2 “other anabolic agents”.
Journal Article