A conceptual framework of organizational stressors in sport performers.

In the study reported here, 12 sport performers (six elite and six non-elite) were interviewed with regard to organizational-related issues they had experienced in preparation for competition. Grounded theory procedures facilitated the development of a conceptual framework of organizational stressors consisting of five general dimensions: factors intrinsic to the sport, roles in the sport organization, sport relationships and interpersonal demands, athletic career and performance development issues, and organizational structure and climate of the sport. The data indicate that the stressors were encountered proportionately more by elite performers (#EPOS=315) than non-elite performers (#NPOS=228) with some demands being in common and some unique to each group. The results are discussed in relation to previous research and regarding their implications for professional practice.

Intensity and direction of competitive anxiety as a function of goal attainment expectation and competition goal generation.

Jones's control model was adopted to investigate differences in the labelling of symptoms associated with pre-competition anxiety and self-confidence as a function of goal attainment expectation and competition goal generation. Team sport performers (N = 96) were divided into outcome, performance and process goal groups. Anxiety intensity and direction, and self-confidence were then examined as a function of goal expectancy (positive or negative) and perceived input into goal production (input or no input). MANOVA and follow-up ANOVA supported the study predictions. Specifically, participants who reported positive expectations of goal achievement and indicated some input into the goal generation process experienced the most facilitative interpretations of cognitive symptoms and greater self-confidence. The results highlight the need to consider how goals are generated when attempting to foster a sense of control and help athletes cope with the psychological demands of competition.

Silver cluster interferences in matrix-assisted laser desorption/ionization (MALDI) mass spectrometry of nonpolar polymers.

Potential difficulties associated with background silver salt clusters during matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) of nonpolar polymers are reported. Silver salt cluster ions were observed from m/z 1500 to 7000 when acidic, polar matrices, such as 2,5-dihydroxybenzoic acid (DHB), all-trans-retinoic acid (RTA) or 2-(4-hydroxyphenylazo)benzoic acid (HABA), were used for the analysis of nonpolar polymers. These background signals could be greatly reduced or eliminated by the use of nonpolar matrices such as anthracene or pyrene. Representative examples of these background interferences are demonstrated during the analysis of low molecular weight nonpolar polymers including polybutadiene and polystyrene. Nonpolar polymers analyzed with acidic, polar matrices (e.g., RTA) and silver cationization reagents can yield lower quality mass spectral results when interferences due to silver clusters are present. Replacing the polar matrices with nonpolar matrices or the silver salts with copper salts substantially improved the quality of the analytical results. In addition, it was found that silver contamination cannot be completely removed from standard stainless steel sample plates, although the presence of silver contamination was greatly reduced after thorough cleaning of the sample plate with aluminum oxide grit. Carry-over silver may cationize polymer samples and complicate the interpretation of data obtained using nonpolar matrices in the absence of added cationization reagents.

Pre-competitive feeling states and directional anxiety interpretations.

In this study, we assessed differences in feeling states indicated by performers who reported being facilitated or debilitated by symptoms associated with competitive anxiety before competition. A sample of high-standard swimmers (n = 190) completed a modified version of the Competitive State Anxiety Inventory-2, including both intensity and direction subscales, and an exploratory checklist of feeling state labels, which comprised positive and negative feeling state labels. Our findings supported the general hypothesis that 'facilitators' report significantly more positive feelings than 'debilitators', who report significantly more negative feelings. Descriptive frequency counts of the largest percentage differences between 'facilitators' and 'debilitators' resulted in the selection of the 'confident' feeling state label on the positive subscales, with it being identified most frequently by the 'facilitators'. Furthermore, of the negative feelings, the groups indicated the label 'anxious' most frequently. This study has extended previous research into the notion of positive and negative anxiety and has revealed individual differences in the combination of feeling states experienced by performers during competition.

Intensity and direction of competitive state anxiety as interpreted by rugby players and rifle shooters.

This study reports the findings of part of an ongoing research program examining sports performers' interpretations of competitive anxiety prior to competition. The notion of 'directional perceptions' has questioned the limited utility of examining only the intensity of competitive anxiety responses as has Jones. The purpose of this study was to examine intensity and direction, i.e., interpretation of intensity as facilitative or debilitative, of anxiety symptoms as a function of two types of sport. The types of sport were explosive (rugby league) versus fine motor skills (target rifle shooting). The sample comprised 50 male rugby league participants and 50 target rifle shooters who completed a modified version of the Competitive State Anxiety Inventory-2 prior to competition. Contingency analysis yielded a significant difference in the number of rugby players who reported somatic anxiety as facilitative and the number of rifle shooters who reported somatic states as debilitative. No such differences were evident for cognitive anxiety. Analysis of variance indicated no differences between the two groups on the intensity of cognitive and somatic anxiety, but the performers competing in rugby league interpreted both states as being more facilitative to performance; the rugby league players also had higher scores on self-confidence than the shooters. These findings provide continuing support for the measurement of directional perceptions of competitive anxiety and highlight the importance of examining individual sports.

Comparison of mass spectrometric techniques for generating molecular weight information on a class of ethoxylated oligomers.

The results of fast atom bombardment (FAB), time-of-flight secondary ion mass spectrometry (ToF-SIMS), matrix-assisted laser desorption/ionization (MALD/I), electrospray ionization (ESI), and field desorption (FD) analyses of ethoxylated oligomers of 2,4,7,9-tetramethyl-5-decyne-4,7-diol (Surfynol(®) 104) were compared.Each of these desorption mass spectrometry (MS) techniques can produce spectra of unfragmented cationized oligomers. From the observed ion series we calculate average molecular weight information. We have compared the results of mass spectrometric analyses of a series of ethoxylated Surfynol surfactants. Our data indicate that FAB, ToF-SIMS, MALDI/I, and ESI produce similar results for the lower molecular weight species, but that as the average molecular weight increases FAB and SIMS produce slightly lower results than MALD/I and FD. This could be due to increased fragmentation. ESI produced a result similar to FAB and SIMS for the highest average molecular weight material. Further experiments compare the mass spectral results with gas chromatographic quantitative data. Although gas chromatography is not expected to accurately analyze the higher mass oligomers, we observe significant differences in intensities of the short-chain oligomers (especially the 0- and 1-mers) when compared to the desorption mass spectrometer results. These differences may reflect poor cationization efficiency for very short oligomer chains in the mass spectrometric analyses.

Antecedents of intensity and direction dimensions of competitive anxiety as a function of skill.

Described here is a follow-up and extension of the study reported by Hanton and Jones in 1995. Situational antecedents of both 'intensity' (level) and 'direction' (facilitative/debilitative) dimensions of precompetitive state anxiety in 97 elite and 114 nonelite competitive swimmers were examined. Antecedents were assessed via the modified swimming version of the PreRace Questionnaire, while cognitive anxiety, somatic anxiety, and self-confidence were measured via the modified version of the Competitive State Anxiety Inventory-2 one hour before competition. Step-wise multiple regression analyses on the intensity scores indicated that cognitive anxiety in the elite group was significantly related to Perceived readiness (5.6%) and Internal environment (9.6%), while no predictors emerged in the nonelite group; scores on somatic anxiety correlated with those on Internal environment (9.4%) and Position goal (14.4%) in the elite group, and by Attitude towards previous performance (4.7%) and Internal environment (8.5%) in the nonelite group. Self-confidence was predicted by Perceived readiness in the elite group (30.3%) and the nonelite group (16.9%). In the case of the direction scores (facilitative/debilitative interpretations), no significant correlations of scores on cognitive anxiety or somatic anxiety emerged for the elite group; however, in the nonelite group the Coach influence factor predicted cognitive anxiety (4.5%) and somatic anxiety (4.9%). These findings show that common and unique antecedents of 'intensity' and 'direction' exist for swimmers as a function of their skill and also highlight the important role of the coach in the maintenance of facilitative interpretations of anxiety by nonelite performers.

Rural helping systems and family typology.

A framework of helping systems provides a guide that permits a social worker to assess the needs of different types of family in an isolated rural community.