Shot placement within cardiac cycle in junior elite rifle shooters

ObjectivesThis study examined the timing of the trigger pull in relation to the cardiac cycle during skilled precision shooting.MethodsElectrocardiogram was recorded from 20 junior level competitive air-rifle shooters in two separate sessions. The testing was conducted at an indoor shooting range using an optoelectronic shooting system. The experimental task was to fire a shot in the standing position at a distance of 10 m from the target.ResultsThe results showed that the junior level shooters fired more often during the phase of 10–15% of the R wave-to-R wave (R–R) interval. With regards to the accuracy of performance, there was not any optimal location for triggering in the cardiac cycle. The length of R–R interval did not affect the relationship between shot placement within the cardiac cycle and shooting performance.ConclusionThe present results suggest that competitive shooters do not time their triggering randomly during the cardiac cycle. In contrast to the earlier empirical findings, however, the data suggest that the timing of the trigger pull in relation to the cardiac cycle is not a determinant of superior shooting performance in competitive shooters.     

Expertise and peripheral autonomic activity during the preparation phase in shooting events

This study compared effectiveness of the concentration period in two groups of shooters to evaluate the influence of their expertise while concentrating on the target. Marksmen (pistol shooters, 10 men and 5 women) and pentathletes (6 men and 7 women) took part in a shooting competition in keeping with the rules of each event. Participants were then asked to imagine themselves shooting, at the laboratory. Five variables representing the activity of the autonomic nervous system were continuously recorded (skin resistance and potential, skin blood flow, skin temperature, instantaneous heart rate). Autonomic responses recorded during concentration, actual shooting, and mental imagery were compared by calculating the ratios concentration/ shooting and imagery/shooting. The resultant mean ratio was used to characterize each participant. The same autonomic nervous system pattern was observed during concentrating on the target, mental imagery, and actual shooting. However, marksmen showed ratios closer to 1.0 than pentathletes, absolute mean differences being .06 and .3, respectively. Shorter duration and weakest amplitude responses were recorded during the concentration phase in the Pentathlete group, suggesting that they have more difficulty in using mental imagery during competition than marksmen. When subjects performed well, a specific response pattern was observed in the Marksman group, but not in the Pentathlete group, except in skin potential. In both Marksman and Pentathlete groups, a majority of negative skin potential responses were found in the concentration and shooting phases for the best shots.     

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.     

Evidence of Improved Shooting Precision in Biathlon After 10 Weeks of Combined Relaxation and Specific Shooting Training

The aim of this study was to test the hypothesis that a combined relaxation (applied tension release, ATR) and specific shooting training regimen may enhance shooting ability of biathlon athletes. Seven biathletes of high national level were randomized into an experimental group (age 20 ± 5 years; Vo _2max 60 ± 8 mL kg^? 1 min^? 1) and were asked to add this special training intervention to their regular training for 10 weeks, while five other biathletes served as controls (age 19 ± 2 years; Vo _2max 57 ± 10 mL kg^? 1 min^? 1). The shooting ability of the subjects was assessed before and after the intervention at rest and after roller skiing on a treadmill in a laboratory-based competition simulating assessment. After the intervention period, the experimental group demonstrated a significantly enhanced shooting performance compared to the control group. No changes in Vo _2max or in heart rate and Vo ₂ responses were observed before and after the intervention in either group and there were no differences between the groups in these parameters. Thus, the preliminary conclusion is that a combination of ATR and specific shooting training seems to be instrumental in enhancing the shooting performance in biathlon.     

Evidence of improved shooting precision in biathlon after 10 weeks of combined relaxation and specific shooting training

The aim of this study was to test the hypothesis that a combined relaxation (applied tension release, ATR) and specific shooting training regimen may enhance shooting ability of biathlon athletes. Seven biathletes of high national level were randomized into an experimental group (age 20 ± 5 years; Vo2max 60 ± 8 mL kg(-1) min(-1)) and were asked to add this special training intervention to their regular training for 10 weeks, while five other biathletes served as controls (age 19 ± 2 years; Vo2max 57 ± 10 mL kg(-1) min(-1)). The shooting ability of the subjects was assessed before and after the intervention at rest and after roller skiing on a treadmill in a laboratory-based competition simulating assessment. After the intervention period, the experimental group demonstrated a significantly enhanced shooting performance compared to the control group. No changes in Vo2max or in heart rate and Vo2 responses were observed before and after the intervention in either group and there were no differences between the groups in these parameters. Thus, the preliminary conclusion is that a combination of ATR and specific shooting training seems to be instrumental in enhancing the shooting performance in biathlon.     

Reducing demand for ineffective health remedies: overcoming the illusion of causality

Abstract

Objective: We tested a novel intervention for reducing demand for ineffective health remedies. The intervention aimed to empower participants to overcome the illusion of causality, which otherwise drives erroneous perceptions regarding remedy efficacy.

Design: A laboratory experiment adopted a between-participants design with six conditions that varied the amount of information available to participants (N?=?245). The control condition received a basic refutation of multivitamin efficacy, whereas the principal intervention condition received a full contingency table specifying the number of people reporting a benefit vs. no benefit from both the product and placebo, plus an alternate causal explanation for inefficacy over placebo.

Main outcome measures: We measured participants’ willingness to pay (WTP) for multivitamin products using two incentivized experimental auctions. General attitudes towards health supplements were assessed as a moderator of WTP. We tested generalisation using ratings of the importance of clinical-trial results for making future health purchases.

Results: Our principal intervention significantly reduced participants’ WTP for multivitamins (by 23%) and increased their recognition of the importance of clinical-trial results.

Conclusion: We found evidence that communicating a simplified full-contingency table and an alternate causal explanation may help reduce demand for ineffective health remedies by countering the illusion of causality.     

A Comparative Study of Intercultural Insight and Empathy

Abstract

The relationship between sports camp participation and changes in self-perception was assessed. The participants were 42 boys and 32 girls participating in a 5-week summer sports camp for economically disadvantaged children in the United States. Self-concept was measured at the beginning and end of the camp with Harter's (1985) Self-Perception Profile (SPP) for Children. At the beginning of the camp the girls scored higher than the boys on overall SPP scores and three of six subscales. After 5 weeks, the girls' scores were higher on only one subscale and on adult group leaders' ratings. The decline in the girls' scores was attributed to the stress of competition or to initial overly positive self-perceptions.     

Changing Polish university students’ attitudes toward cluttering

PurposeThis quasi-experimental design study in Poland explored the extent to which attitudes toward cluttering of university students could be changed or improved after a series of activities dedicated to attaining deeper recognition of problems associated with fluency disorders.MethodUniversity students were assigned to either an Experimental or a Control group, with 39 in each (total = 78). They all completed the Polish version of the Public Opinion Survey of Human Attributes–Cluttering (POSHA–Cl) on two occasions up to eight weeks apart.Participants in the Experimental group attended the following intervention activities: watching and discussing an educational video on cluttering, participating in a workshop on the nature of cluttering, and watching and discussing a documentary on the life experiences of people struggling with fluency disorders. The Experimental group also filled out an open-ended questionnaire at the end of the study.ResultsPre-intervention comparisons indicated that participants assigned to either of the Experimental or Control groups differed significantly on 2 of the 15 summary ratings (13 %) of their pre-POSHA–Cl attitudes toward cluttering. For the Experimental group, the intervention resulted in significant positive changes in cluttering attitudes on 8 of the 15 summary ratings (53 %). In contrast, pre- and post- POSHA–Cl scores for the Control group were essentially unchanged (0 of 15 ratings).ConclusionsThis quasi-experimental study demonstrated that it is possible to positively modify the cluttering attitudes of university students. This has implications for the length, content, and experiential components of interventions designed to improve public attitudes toward fluency disorders.     

An investigation of the effects of self-reported self-control strength on shooting performance

During professional shooting tournaments, which typically last multiple hours, athletes must stay focused at all times in order to perform at their highest levels. Sustaining attention over extended periods of time relies on self-control. Crucially, perceived state self-control strength appears to wane as a function of task duration, which ultimately can impair shooting performance. In the present study, we tested the assumption that the level of self-reported self-control strength decreases over the course of a 1-h shooting task measured twice during a regular training day and separated by a 2-h break. Additionally, we assumed that shooting performance would be linked with fluctuations in self-control. A total of 21 shooters (14 elite and 7 sub-elite) took part in this study and were asked to perform a series of 10 shots at a standardized target, five times in the morning and five times in the afternoon (i.e., 100 shots total). The participants also reported their perceived state self-control strength at the baseline (prior to the start of the morning session as well as the afternoon session) and after a series of 10 shots each in the morning and afternoon (i.e., 12 measurements in total). In line with our hypotheses, we observed that perceived state self-control diminished with the number of shots performed, and that perceived state self-control could explain shooting performance. Additionally, these observations could explain the difference in shooting performance between elite and sub-elite athletes. The results suggest that the perception of self-control strength is highly important for optimal shooting performance. Practical implications are discussed.     

The impact of group leaders' behaviour on parents acquisition of key parenting skills during parent training

BackgroundParent training (PT) is identified as the most effective intervention for the treatment of conduct disorder (CD). Intervention observational outcomes are often reported as summarised composite scores, providing an overview of overall construct change.Methods and aimsParents of children aged 3–5 years identified ‘at risk’ of developing CD were randomly allocated to either PT intervention or waiting list control group. Parent and child behaviours were assessed before and after the intervention period. The current paper aims to establish which individual observed parenting categories change as a result of PT, and which specific observed leader categories predict these changes.ResultsControlling for baseline scores, ANCOVA demonstrated changes in parent praise and reflective behaviours as significant post-intervention. One-way ANOVAs demonstrated higher levels of leader praise and reflective behaviours resulted in greater change in parental praise and reflective behaviours respectively. Regression analyses indicated these leader behaviours predict positive change in parental praise and reflective behaviours for intervention families.ConclusionsComposite observational scores provide an account of behaviour constructs, whereas individual behaviour categories provide an insight into the core components of these constructs. The results suggest praise and reflection as key leader behaviours that influence the mechanisms of change in parenting behaviours as a result of PT.     

Anxiety, self-control and shooting performance

55 rifle shooters were administered state-trait anxiety and self-control questionnaires. Shooting performance was recorded on 7 competitive occasions. Analysis indicated shooting performance is dependent more on anxiety state than on anxiety trait and self-control. Highly skilled shooters were less anxious and performed better across all competitions than moderately skilled shooters but did not differ on self-control and anxiety trait. The assumption that increased anxiety negatively affects performance through the mediation of self-control should be further studied.     

Do web-based competitions promote physical activity? Randomized controlled trial

ObjectivesIntroducing competitions may inspire positive behaviour change but they tend to be implemented alongside other strategies. Thus, the study examined the effectiveness of a competitive web-based intervention to promote physical activity, disentangled the effects of competition from other behaviour change techniques, and identified underlying mediators.DesignRandomized controlled trial.MethodsPhysically inactive adults living or working in a UK city (n = 281) were recruited. Participants were randomized to one of three web-based conditions: a control group; a group encouraged to self-monitor their steps and who received basic feedback; a group encouraged to self-monitor their steps who received basic feedback plus additional feedback to instigate competition. Participants' physical activity was monitored through pedometers for one-week pre-intervention and for four-weeks during the intervention period. Participants completed the BREQ-2 and measures of intention, planning, goal conflict, goal importance, effort, commitment, perceived behavioural control and self-efficacy pre- and post-intervention.ResultsParticipants in the competition condition increased their steps significantly more than those in the control group with the effect being mediated by increased goal importance, identified motivation and intrinsic motivation. Participants in the competition condition increased their steps more than those in the self-monitoring condition. There was weaker evidence that the self-monitoring group increased their steps more than those in the control condition.ConclusionsSelf-monitoring and feedback can increase physical activity but adding a competitive component, implemented via the web, can boost goal importance, identified motivation and intrinsic motivation that mediate these increases in physical activity.     

The Self-Serving Bias and the Use of Objective and Subjective Methods for Measuring Success and Failure

Abstract

Students (N = 45) were asked to judge their recent exam performance on a success versus failure rating scale. They were also asked to make causal attributions for their test performance on an internal versus external scale. The students' scores were divided into success and failure groups by using both subjective (self-reported outcome) and objective (actual exam scores) definitions of outcome. For both methods, the success group had higher internal attributions for their performance than did the failure group. The effect size for the subjective methods of defining outcome, however, produced a stronger self-serving bias that did the objective definition.     

Aiming at a far target under different viewing conditions: visual control in basketball jump shooting

Most research on visual search in aiming at far targets assumes preprogrammed motor control implying that relevant visual information is detected prior to the final shooting or throwing movements. Eye movement data indirectly support this claim for stationary tasks. Using the basketball jump shot as experimental task we investigated whether in dynamic tasks in which the target can be seen until ball release, continuous, instead of preprogrammed, motor control is possible. We tested this with the temporal occlusion paradigm: 10 expert shooters took shots under four viewing conditions, namely, no vision, full vision, early vision (vision occluded during the final +/-350 ms before ball release), and late vision (vision occluded until these final +/-350 ms). Late-vision shooting appeared to be as good as shooting with full vision while early-vision performance was severely impaired. The results imply that the final shooting movements were controlled by continuous detection and use of visual information until ball release. The data further suggest that visual and movement control of aiming at a far target develop in close correspondence with the style of execution.     

Competition-specific preparation and expert performance

ObjectiveThe objective of the study was to identify and describe the extent, function, nature, and timeline of practice and preparation activities undertaken by experts in order to adapt to constraints unique to a specific upcoming competition.MethodA content analysis was conducted of data from interviews with 15 expert orienteers and six experienced orienteering coaches about competition-specific preparation in the sport of orienteering.ResultsThe analysis revealed several key concepts. First, competition-specific preparation is necessary because the constraints of a given orienteering competition vary across competitions. Second, owing to such variance, orienteers have limited advance information about the specific constraints of an upcoming competition, which impedes their preparation for that competition. Third, expert orienteers engage in a range of activities designed to gather information about the constraints of an upcoming competition. Fourth, this information is then used to identify or create practice environments that represent these constraints. Practice within these environments enables expert orienteers to adapt to these constraints before competing.ConclusionsCompetition-specific preparation appears critical to performance in sports in which environmental constraints change considerably between competitions.     

A comparison of cortico-cortical communication during air-pistol shooting in elite disabled and non-disabled shooters

This study examined the difference in electroencephalographic (EEG) coherence, an index of cortico-cortical communication, during air pistol shooting between disabled and non-disabled elite shooters. Participants included 22 non-disabled and 12 disabled members of the Korean national air-pistol shooting team at the world class level. Electrocortical activation was recorded during 20 self-paced 10-meter air pistol shots. Higher cortico-cortical communication between brain regions was observed in disabled shooters. The higher functional communication appears to be a strategy to compensate for the attenuated function of the brain resulting from spinal cord injury. This compensatory mechanism could explain why there is no significant difference in shooting performance between elite disabled and non-disabled shooters.     

Do clutch players win the game? Testing the validity of the clutch player's reputation in basketball

ObjectivesThe sport psychology literature recognizes the existence of clutch behavior among elite athletes. The present study questions the validity of the clutch reputation in basketball. The performance of clutch players was compared to that of their teammates, using a broad approach that included different performance measures.DesignEight basketball experts ranked NBA players according to their perceived reputation of being clutch shooters. The selection procedure resulted in a sample of 16 clutch players who had successfully made a game-deciding shot, or had made a successful shot in the final few minutes to tie the game, during the 2003–2006 seasons.MethodData were collected from play-by-play reports of 222 tied NBA games during the 2005–2006 season and playoffs. Data were reduced to the final five minutes of the second and fourth quarters in each close/tied game. A MANOVA and several ANOVAs were conducted in order to compare the performance measures of the clutch players and the average of their teammates, in game phases of low and high pressure.ResultsThe reported main effects of clutch versus non-clutch players suggest a superior performance of the clutch players. The results also show that the clutch players improved their performance in the final, most decisive phase of the game, which could be interpreted as evidence for clutch ability. However, the clutch players did not improve their general shooting skills, as might have been expected.ConclusionsTop NBA players, like most other people, do not perform better under pressure situations, at least not while considering their chances of making a shot, but clutch players do influence the end-result of the game in other aspects.     

The effects of smart phone video analysis on focus of attention and performance in practice and competition

ObjectivesResearch has consistently found that focus of attention (FOA) affects motor learning and performance. However, much of the previous work has used artificially manipulated FOA of novice participants performing laboratory tasks. There is a paucity of work that has tested transfer to more complex competition environments. We aimed to investigate the effects of smart phone video analysis, which commonly occurs in natural practice settings in golf, on skilled player’s FOA and performance in both practice and competition.DesignThis study employed a mixed experimental design. The between participants factor was the use of video analysis (practice with video vs practice only) and the repeated measures factor was time point (pre-intervention vs post-intervention).MethodAltogether, 19 skilled golfers (handicap: M = 5.79, SD = 5.80) took part in a four-week practice intervention with (n = 10) or without (n = 9) the use of smart phone video analysis. Driving range performance and competition performance were measured pre- and post-intervention. Practice diaries provided measures of FOA during the intervention period.ResultsThe practice with video group displayed a significantly more internal FOA throughout the intervention period than the practice only group. This resulted in a significant time by group interaction for driving range performance that showed an increase in performance for the practice only group and a decrease for the practice with video group. However, the performance effects did not transfer to competition scores.ConclusionsFindings enhance our understanding of the effects of video analysis on FOA and question whether FOA effects transfer from on range practice to on course performance.     

Assessment of Parental Acceptability and Preference for Behavioral Interventions for Childhood Problem Behavior in Saudi Arabia

Abstract

The present study assessed the treatment acceptability and preference for common behavior management strategies with parents of children with Autism Spectrum Disorder in Saudi Arabia. Specifically, parents were asked to evaluate medication, positive reinforcement, response cost, spanking, and timeout using a treatment acceptability measure. Results indicated that positive reinforcement had the highest average acceptability score, and that spanking had the lowest acceptability score. Treatment preference rankings corresponded to treatment acceptability ratings for all interventions assessed. Implications for working with diverse families and contexts are highlighted, and potential avenues for further research are described.