An examination of post-traumatic growth in Canadian and American ParaSport athletes with acquired spinal cord injury

ObjectivesThe study was guided by two research questions: (1) Does participation in ParaSport following acquired spinal cord injury (SCI) influence people's perceptions of post traumatic growth (PTG)? (2) What specific dimensions of PTG, if any, do ParaSport athletes report experiencing?DesignA phenomenological approach was adopted to understand ParaSport athletes' perceptions and experiences of PTG and sport participation following acquired SCI.MethodTwelve participants with acquired SCI who integrated, reintegrated, or attempted to integrate into sport completed a survey and participated in a semi-structured interview to assess their perceptions of acquired SCI, involvement in ParaSport, and PTG.ResultsFive general dimensions of growth emerged from the data including: (a) injury relevant processing; (b) appreciation for life; (c) reactive behavior as a result of attempted integration into ParaSport; (d) relating to others and (e) health and well-being. Participants reported increased physical functioning and independence related to their involvement in sport. Emotional and psychological gains were also associated with ParaSport including re-establishment of self-identity, improved clarity and perception of life, changed priorities, greater confidence, and enhanced social relationships.ConclusionsParticipation in ParaSport following acquired SCI may provide physical, emotional, and psychological health benefits, which should be considered in the development and implementation of sport related interventions to encourage PTG. Clinicians and rehabilitation specialists may use information from the present study to help individuals improve their identity, build relationships, and develop an appreciation for life after incurring a SCI.     

Temporal pattern of pre-shooting psycho-physiological states in elite athletes: A probabilistic approach

Objective

The IZOF-based probabilistic approach provides a methodology to study within-individual patterns of a performer's states. So far, the time course of physiological data before performance have not been investigated within the probabilistic methodology framework. The purpose of this study was to examine the value of the probabilistic approach in the assessment of the time course of physiological indicators of arousal/activation and vigilance during the period preceding the shot, in comparison with the performance-based method.

Design

Longitudinal assessment of psycho-physiological data and performance outcomes was conducted on eight elite pistol shooters in a controlled setting.

Methods

Each participant performed 60 air-pistol shots in 2 sessions. Skin conductance level and cardiac activity were recorded. Affective states intensity was evaluated on a modified 11-point Borg scale. Affect, HR and SC level were evaluated with a Performance-based approach and a Probabilistic method, and results compared at an individual level.

Results

Findings showed the higher effectiveness of the probabilistic method to analyse physiological parameters (skin conductance and heart rate) and to describe the physiological mechanisms associated with shooters’ performance.

Conclusions

The probabilistic method better discerned the contribution of arousal/activation and vigilance to optimal and non-optimal performance in elite shooters, thereby providing a sharper representation of the temporal pattern of performers' states before shooting. From an applied perspective, we believe that the probabilistic approach can help athletes become aware of the subtle variations occurring in their psychophysical states during the preparatory period preceding the shot and not only at the moment of shot release.     

Theory of Planned Behaviour, Skin Care and Pressure Sores Following Spinal Cord Injury

Objectives: To use the Theory of Planned Behaviour to explore factors associated with performing skin care behaviors and the occurrence of pressure sores in people with spinal cord injury. Design: A within-group cross-sectional design was used to assess 59 people with spinal cord injury living in the community. Of these, 17 participants returned a repeat assessment allowing a longitudinal examination of the relationship between intention and actual behaviour. Methods: A measure was developed in accordance with the Theory of Planned Behaviour guidelines through interviews with people with spinal cord injury. Measures of mood and knowledge of skin care behaviour were also included. Results: The Theory of Planned Behaviour components, mood and knowledge of skin behaviours predicted intention, skin care behaviour and occurrence of pressure sores. Knowledge of skin care was negatively correlated with occurrence of pressure sores (r=−.38, p < .01). Indirect perceived control was a particularly important predictor of pressure relief, accounting for 24% of the variance. Conclusions: Psychosocial factors, including the Theory of Planned Behaviour components, predicted skin care behaviours and the occurrence of pressure sores. These findings provide empirical support for the Theory of Planned Behaviour. The study also carries clinical implications for skin care education for people with SCI and their families.     

Walking dreams in congenital and acquired paraplegia

To test if dreams contain remote or never-experienced motor skills, we collected during 6 weeks dream reports from 15 paraplegics and 15 healthy subjects. In 9/10 subjects with spinal cord injury and in 5/5 with congenital paraplegia, voluntary leg movements were reported during dream, including feelings of walking (46%), running (8.6%), dancing (8%), standing up (6.3%), bicycling (6.3%), and practicing sports (skiing, playing basketball, swimming). Paraplegia patients experienced walking dreams (38.2%) just as often as controls (28.7%). There was no correlation between the frequency of walking dreams and the duration of paraplegia. In contrast, patients were rarely paraplegic in dreams. Subjects who had never walked or stopped walking 4–64 years prior to this study still experience walking in their dreams, suggesting that a cerebral walking program, either genetic or more probably developed via mirror neurons (activated when observing others performing an action) is reactivated during sleep.     

The relationship between working memory capacity and cortical activity during performance of a novel motor task

ObjectivesThis study assessed whether individual differences in working memory capacity influenced verbal-analytical processes when performing a novel motor skill.DesignParticipants performed a tennis-hitting task in two conditions: no pressure and high-pressure.MethodsEighteen young adults participated in the study. EEG coherence between the T3-F3 and T4-F4 regions in the Beta1 and Alpha2 frequencies was recorded during performance in each condition. Verbal and visuo-spatial working memory capacity were assessed using the Automated Working Memory Assessment.ResultsNo differences were found between the two conditions for hitting performance and EEG activity. However, across both conditions, verbal and visuo-spatial working memory were significant predictors of EEG coherence between the T3-F3 and T4-F4 regions in the Beta1 and Alpha2 frequencies. Larger verbal working memory capacity was associated with greater coherence while the opposite trend was observed for visuo-spatial working memory capacity.ConclusionsThese results indicate that larger verbal working memory capacity is associated with a greater tendency to use explicit processes during motor performance, whereas larger visuo-spatial working memory capacity is associated more with implicit processes. The findings are discussed with relevance to the theory of implicit motor learning.     

Factors contributing to the quality of the transition out of elite sports in Swiss,Danish, and Polish athletes

ObjectivesThe aim of this study was (a) to compare athletic retirement of former Swiss, Danish, and Polish athletes; and (b) to explore the influence of factors on the quality of the transition. Based on existing transitional models, we developed a working model to investigate the predictive power of commonly assumed resources and barriers related to the transition (Park, Lavallee, & Tod, 2013).Design and methodsFormer international elite athletes from Switzerland (n = 231), Denmark (n = 86), and Poland (n = 84) from 35 different sports completed an online questionnaire in their native language. Mean/proportional differences across countries were explored using ANOVAs and chi-square tests. For each sample, a multiple regression analysis was performed with 26 predictors on the transition quality, which was a component score of seven variables.Results and conclusionsMore differences were found among individual characteristics (e.g., educational level, athletic identity, confidence in skills), whereas athletes reported a similar pattern concerning retirement planning and voluntariness to end their career regardless of the context. The adaptation process following the career end was easiest for Swiss athletes and most difficult for Polish athletes. Results of the multiple regressions revealed both common resources (e.g., voluntariness) and barriers (e.g., athletic identity), but also factors that worked as resources in one context, but as barriers in another (e.g., high sportcareer income). We propose to avoid generalizations about resources and barriers influencing the transition, but to apply a culturally sensitive approach when studying athletic retirement in different contexts.     

A kinematic comparison of successful and unsuccessful tennis serves across the elite development pathway

While velocity generation is an obvious prerequisite to proficient tennis serve performance, it is also the only stroke where players are obliged to negotiate a unique target constraint. Therefore, the dearth of research attending to the accuracy component of the serve is surprising. This study compared the body, racquet and ball kinematics characterising successful serves and service faults, missed into the net, in two groups of elite junior female players and one professional female tennis player. Three-dimensional body, racquet and ball kinematics were recorded using a 22-camera VICON motion analysis system. There were no differences in body kinematics between successful serves and service faults, suggesting that service faults cannot be attributed to a single source of biomechanical error. However, service faults missing into the net are characterized by projection angles significantly further below the horizontal, implying that consistency in this end-point parameter is critical to successful performance. Regulation of this parameter appears dependent on compensatory adjustments in the distal elbow and wrist joints immediately prior to impact and also perceptual feedback. Accordingly, coordination of the distal degrees of freedom and a refined perception-action coupling appear more important to success than any isolated mechanical component of the service action.     

The phenomenology of agency and intention in the face of paralysis and insentience

Studies of perception have focussed on sensation, though more recently the perception of action has, once more, become the subject of investigation. These studies have looked at acute experimental situations. The present paper discusses the subjective experience of those with either clinical syndromes of loss of movement or sensation (spinal cord injury, sensory neuronopathy syndrome or motor stroke), or with experimental paralysis or sensory loss. The differing phenomenology of these is explored and their effects on intention and agency discussed. It is shown that sensory loss can have effects on the focussing of motor command and that for some a sense of agency can return despite paralysis.

Crisis Support and Coping as Mediators of Well-Being in Persons with Spinal Cord Lesion

This study aims to investigate whether crisis support and coping mediate symptoms of posttraumatic stress disorder (PTSD) in individuals with spinal cord lesions (SCL). PTSD, crisis support, and coping were assessed an average of 83 days after the injury (T1), at discharge from the rehabilitation center (T2), and an average of 121 days following discharge (T3). Sixty-nine newly injured paraplegics and tetraplegics completed the questionnaire at T1, 40 (58%) at T2, and 38 (55%) at T3. Individuals with PTSD experienced significantly lower levels of social support, and used more emotional coping than did those without PTSD. On the basis of logistic regression analyses, emotional coping and the interaction between negative response and emotional coping predicted PTSD. Emotional coping is a strong predictor of PTSD in persons with new SCL.     

Functional cortical connectivity analysis of mental fatigue unmasks hemispheric asymmetry and changes in small-world networks

Changes in functional connectivity across mental states can provide richer information about human cognition than simpler univariate approaches. Here, we applied a graph theoretical approach to analyze such changes in the lower alpha (8–10 Hz) band of EEG data from 26 subjects undergoing a mentally-demanding test of sustained attention: the Psychomotor Vigilance Test. Behavior and connectivity maps were compared between the first and last 5 min of the task. Reaction times were significantly slower in the final minutes of the task, showing a clear time-on-task effect. A significant increase was observed in weighted characteristic path length, a measure of the efficiency of information transfer within the cortical network. This increase was correlated with reaction time change. Functional connectivity patterns were also estimated on the cortical surface via source localization of cortical activities in 26 predefined regions of interest. Increased characteristic path length was revealed, providing further support for the presence of a reshaped global topology in cortical connectivity networks under fatigue state. Additional analysis showed an asymmetrical pattern of connectivity (right > left) in fronto-parietal regions associated with sustained attention, supporting the right-lateralization of this function. Interestingly, in the fatigue state, significance decreases were observed in left, but not right fronto-parietal connectivity. Our results indicate that functional network organization can change over relatively short time scales with mental fatigue, and that decreased connectivity has a meaningful relationship with individual difference in behavior and performance.     

Measurement of cognitive functions in experts and elite athletes: A meta‐analytic review

An extraordinary physiological capacity combined with remarkable motor control, perception, and cognitive functioning is crucial for high performance in sports. Tests that assess the physical abilities are already well established. Moreover, a growing area of research evolved in the recent past that is particularly concerned with the basic cognitive functions by means of neurocognitive tests in experts and elite athletes. The aim of this meta‐analysis (k = 19) is to quantify differences among experts and nonexperts as well as elite athletes and non‐elite athletes. In addition, it aims to assemble and compare previous research and analyze possible differences in cognitive functions depending on age, skill level, and used cognitive tasks. Overall, the mean effect size was small to medium (r = 0.22), indicating superior cognitive functions in experts and elite athletes. The factor of skill definition significantly differentiates the cognition–expertise relationship. In contrast, differences in age groups and cognitive areas appeared but were not significant. Future research should prefer the elite rather than the expert definition and distinguish between high‐performance and amateur athletes. Furthermore, the findings suggest that it can be beneficial for coaches and sport clubs to integrate cognitive tests as an additional tool for scouting and for optimizing the athletic development of their players.     

A prospective multilevel examination of the relationship between cohesion and team performance in elite youth sport

The purpose of the current research was to (a) develop and establish the factor structure of the Czech and Slovak versions of the Youth Sport Environment Questionnaire (YSEQ; Eys, Loughead, Bray, & Carron, 2009) and (b) examine the relationship between team performance and cohesion with a sample of European elite youth sport teams. At time point one, with 352 elite youth athletes from 22 teams, support was obtained for a two factor structure underlying the YSEQ. Based on data collected at the second (N = 291) and third (N = 246) time points, multilevel analyses revealed that, when controlling for midseason cohesion, midseason team performance significantly and positively predicted task and social cohesion later in the season. Neither task nor social cohesion predicted team performance. In addition to adapting the YSEQ for use in a unique context, these findings reveal the nature of the cohesion-performance relationship in elite youth sport.     

A comparison of dichotic and visuo-acoustic competition in hemispherectomized patients

Following hemispherectomy, patients performing dichotic listening tasks have great difficulty reporting items presented to the ear ipsilateral to their intact hemisphere. One possible cause is an attentional imbalance which, when competing inputs are received from both sides of space, restricts the patient's attention to the stimulus contralateral to his remaining hemisphere. If this explanation is true, then a similar ipsilateral ear decrement should occur when a competing visual stimulus is presented in the contralateral field. In the present study, however, hemispherectomy patients easily reported a digit presented to the ear ipsilateral to their intact hemisphere despite the concurrent presentation of a visual digit to their contralateral field.     

A comparison of classical eyelid conditioning in adults and infants

In a classical conditioning procedure an eyeblink-eliciting tap to the glabella (the flat region of skin between the eyebrows) was presented 500 ms after the onset of a mild l-kHz tone. As tone-tap presentations proceeded, the probability of an eyeblink during the latter part of the tone increased in both infants (median age 8 months) and adults, but the infants were slower to condition than the adults and were more variable. Overall, the latency of the conditioned response to tone was significantly longer for infants than for adults, but the latency of the unconditioned response to tap was significantly shorter for infants than for adults.     

A comparison of female supervisors in business and government organizations

This exploratory study compared the life style and interpersonal need orientation, leadership style, and perception of the organization structure of female supervisors in business and government organizations. The government group had a significantly higher formalistic and lower sociocentric and personalistic life style orientation; lower needs for expressed control, expressed affection, wanted inclusion, wanted affection, and a higher need for wanted control; were lower on consideration and higher on structure leadership dimensions; and perceived their organization as being more bureaucratic and less collaborative and coordinative than the business group. The findings were discussed in terms of the processes of individual-organization congruity and organizational socialization.     

A comparison of delays and ratio requirements in self-control choice.

In a discrete-trial procedure, pigeons could choose between 2-s and 6-s access to grain by making a single key peck. In Phase 1, the pigeons obtained both reinforcers by responding on fixed-ratio schedules. In Phase 2, they received both reinforcers after simple delays, arranged by fixed-time schedules, during which no responses were required. In Phase 3, the 2-s reinforcer was available through a fixed-time schedule and the 6-s reinforcer was available through a fixed-ratio schedule. In all conditions, the size of the delay or ratio leading to the 6-s reinforcer was systematically increased or decreased several times each session, permitting estimation of an "indifference point," the schedule size at which a subject chose each alternative equally often. By varying the size of the schedule for the 2-s reinforcer across conditions, several such indifference points were obtained from both fixed-time conditions and fixed-ratio conditions. The resulting "indifference curves" from fixed-time conditions and from fixed-ratio conditions were similar in shape, and they suggested that a hyperbolic equation describes the relation between ratio size and reinforcement value as well as the relation between reinforcer delay and its reinforcement value. The results from Phase 3 showed that subjects chose fixed-time schedules over fixed-ratio schedules that generated the same average times between a choice response and reinforcement.     

A comparison of operant licking and lever pressing in the rat

Two groups of rats were trained on a signaled, free-operant, avoidance procedure to lick or to lever press in order to avoid shock while water-deprived or satiated and, in the case of licking, while ingesting deionized water, isotonic saline, or 10% sucrose. The most effective avoidance licking occurred while the rats were water-deprived and ingesting 10% sucrose. Water deprivation level had no effect on lever pressing for shock avoidance. Two other groups of rats were operantly conditioned to lick or to lever press for food pellets while waterdeprived or satiated and, in the case of licking, while ingesting deionized water or 10% sucrose. The most effective licking for food reinforcement occurred while the rats were water-deprived and ingesting 10% sucrose. Water deprivation level had no effect on lever pressing for food reinforcement. The data indicated that effective operant licking must be supported by factors related to water regulation and taste palatability.