The effects of internal versus external information processing on symptom perception in an exercise setting

The purpose of our study was to determine the effects of internal versus external attentional focus on symptom perception and performance in an exercise setting. Fifteen introductory psychology undergraduates ran 1 mile under each of three experimental conditions: "word-cue," in which subjects were required to focus externally by listening for a target word heard repeatedly over headphones; "breathing," in which subjects were directed to attend to their own breathing and heart rate; and a control. Results indicated that participants reported significantly less symptomatology, particularly exercise-relevant symptoms, in the word-cue condition than in the breathing or control conditions. The findings are discussed with reference to previous theory in this area, and methodological differences between this and earlier research are delineated.     

Factors associated with perceived exertion and estimated time limit at lactate threshold

The purpose was to identify the most predictive parameters for perceived exertion and estimated time limit responses at the velocity corresponding to the lactate concentration threshold. The former scale concerns the subject's current status (how hard he feels the exercise currently is) whereas the latter scale deals with a subjective prediction of how long the current exercise level can be maintained. Multiple regression equations were developed among physiological, psychological, nutritional, and individual parameters (subjects' characteristics and performances) as independent variables, and perceived exertion or estimated time limit as dependent variables. Independent variables were collected before or during an incremental running field test. 94 regional to national level athletes (47 endurance-trained runners, 11 sprinters, and 36 handball players) participated. Multiple stepwise regression showed that Rating of Perceived Exertion and Estimated Time Limit at the lactate threshold were mainly mediated by factors relative to the performance expressed in percentage of the maximal aerobic velocity. Secondary factors which contribute significantly as perceptual predictors were related to various classes of factors except for psychological factors.     

Type A behavior, attentional style, and symptom reporting among adult men and women

Type A behavior and its components (measured on the JAS) were examined in relation to attentional style and symptom reporting in 294 healthy adult men and women. The results showed that for both men and women the JAS Type A, Job Involvement, and Hard Driving factors were all associated with self-reported attentional effectiveness as measured by the Nideffer Test of Attentional and Interpersonal Style. However, a fourth JAS factor, Speed and Impatience, was associated with Nideffer measures of cognitive overload. For both men and women, the Type A, Speed and Impatience, and Hard Driving factors were all positively associated with the number of medical and psychological symptoms reported on the Cornell Medical Index. In addition, acute psychological distress (Hopkins SCL-90R) was associated with Type A behavior for men and with Speed and Impatience for both sexes. Attention differences did not account for the observed positive relationships between Type A factors and symptom reporting with one exception; attentional overload (internal) appeared to partially explain the relationships between symptom reporting and Speed and Impatience in women. In summary, Type As described themselves as having a broader attentional focus and reported more naturally occurring physical and psychological symptoms than did Type Bs.     

Effects of single trial of heart-rate biofeedback during ramp bicycling exercise

We examined whether a single trial of heart-rate biofeedback was effective to attenuate heart-rate responses during ramp exercise despite a lack of biofeedback conditioning. 35 healthy women exercised in two trials while they tried to attenuate their heart rate by watching biofeedback signals or they only exercised without biofeedback signals (Control trial). 17 subjects were able to attenuate the heart rate during Biofeedback trial (Can group) whereas the remaining subjects were not (Cannot group). In the Can group, the magnitude of heart-rate attenuation in all exercise time was equivalent to 11+/-3% of the preexercise heart rate. Since the heart-rate reduction was similar to that achieved after the heart-rate biofeedback conditioning in previous studies, it is likely that the single trial of heart-rate biofeedback was effective for almost half the subjects to attenuate the heart-rate responses during ramp exercise.     

Does the level of physical exercise affect physiological and psychological responses to psychosocial stress in women?

ObjectivesTo test the Cross-Stressor Adaptation hypothesis for females by examining whether physically exercising young women show reduced physiological and psychological stress responses to a psychosocial stressor.DesignForty-seven healthy young women with different levels of physical exercise (17 not or rarely exercising, 15 moderately exercising, 15 vigorously exercising) underwent the Trier Social Stress Test for Groups (TSST-G); physiological and psychological stress responses during and after stress induction were compared.MethodANOVAs with repeated measures were used to compare stress reactivity and recovery between the three exercise groups. Heart rate and salivary free cortisol were used as indicators of physiological stress response, state anxiety, mood, and calmness as indicators of psychological stress response. For physiological stress reactivity, the areas under the curve with respect to the ground (AUC_G) were compared.ResultsIn all three exercise groups, experimentally induced stress led to a significant rise in heart rate, cortisol, and state anxiety; mood and calmness significantly decreased. As hypothesized, the pattern of the physiological stress response differed for the three exercise groups, with lowered reactivity in the more active groups. However, the psychological stress response partly went in the opposite direction: Exercising participants reported a higher mood decrease, suggesting a dissociation of the physiological and psychological stress responses.ConclusionsThe findings suggest that the Cross-Stressor Adaptation hypothesis is also valid for young women; however, only with regard to physiological stress response. The unexpected findings for psychological stress response need to be further explored in experimental studies.     

External motivators of self-touching behavior

Previous research has shown that nonverbal self-touching behaviors can be induced by external motivators such as videos and literary passages about insects. This study investigated whether the number of self-touching behaviors differed between presentation of what was assumed to be an anxiety-inducing stimulus (listening to the reading of a passage about leeches and answering questions) or a nonanxiety-inducing stimulus (a passage about canaries). It also investigated whether there was a difference in frequency of self-touching when subjects were passively listening to passages or actively answering questions. The difference in frequency of self-touching between men and women was also observed. Over-all, subjects did not perform significantly more self-touching gestures during the anxiety-inducing stimulus than during the nonanxiety-inducing, as previous research had indicated. Subjects did touch themselves significantly more, however, while answering questions than while listening to the passage. Over-all, men performed significantly more self-touching behaviors than women. And, women touched themselves significantly more during the active anxiety-inducing cell than in any other condition.     

Affective responses to seeing oneself for the first time on unedited videotape

Despite the growing popularity of watching oneself on videotape, little systematic research has been conducted determine viewers' affective responses to video replay. This study addresses the question: what affective responses do women have when they view themselves for the first time on unedited videotape, in comparison to their responses when they view a peer or nature scenes on videotape? Affective responses were measured in three ways: self-report, physiological, and behavioral. Subjects who viewed themselves reported more negative feelings and anxiety, and smiled more frequently than subjects who watched another person or nature scenes on video. Subjects with high private self-consciousness had higher mean arterial blood pressures when viewing themselves than did subjects with low private self-consciousness. Overall, the implications for seeing oneself on video point to potential embarrassment but generally moderate effects.     

Aerobic fitness, psychological characteristics, and cardiovascular reactivity to stress

Examined the relations among aerobic fitness (AF), psychological characteristics, and cardiovascular reactivity using 62 men divided into highly fit and less fit groups based on a maximal treadmill exercise test. Several psychological and physiological variables were measured, and subjects' cardiovascular reactivity was assessed during a mental arithmetic task and during a video game task. Highly fit subjects showed a significantly smaller increase in both diastolic blood pressure (DBP) and heart rate (HR) and reported themselves to be less anxious and less angry than less fit subjects. Furthermore, controlling for subjects' scores on a scale assessing angry temperament reduced the relationship between AF and DBP reactivity to nonsignificant levels. These results suggest that degree of dispositional anger, which covaries with increased fitness, may contribute to the apparent relationship between AF and DBP--but not HR--reactivity.     

Role of the feedback signal in electromyograph biofeedback: the relevance of attention

This article describes two experiments designed to examine the hypothesis that the critical role of the feedback signal in frontalis electromyograph (EMG) biofeedback is an attentional one. In both experiments, high- and low-absorption subjects were assigned to either a biofeedback condition, a no-feedback condition, or an attentional demand condition in which external stimuli, related to relaxation, were presented as an attentional focus. The two experiments differed essentially in the type of attentional demand condition that was employed and varied the compelling nature of the demand on subjects for an external attentional focus. The pattern of results was consistent with the attentional hypothesis. For low-absorption subjects, performance in the biofeedback and attentional demand conditions was equivalent and appreciably greater than in the no-feedback condition. For high-absorption subjects, an interference effect of biofeedback was observed, but data indicated a similar interference effect on the performance of subjects when the attentional demand condition was most compelling. The pattern of results obtained point to the special relevance of attentional processes and highlight their lack of emphasis in contemporary theoretical models of EMG biofeedback.     

Comparison of blinking behavior during listening to and speaking in Japanese and English

Blinking behavior during conversation may be different between conditions in listening and responding to questions because sifting attention from external to internal is possibly associated. The purpose of this study was to compare blinking behavior, duration, heart rates, and mental states during the tasks of listening to and responding to questions in Japanese and English. Participants were 67 (35 men and 32 women) undergraduate students. Blink rate while responding to questions in English did not differ from that while responding to questions in Japanese, but blink rate while listening to questions in English was significantly reduced compared to that while listening to Japanese. While anxiety and uneasiness were increased by the English conversation, blink rate and heart rate were decreased. Blinking behavior may be related to thinking and attention.     

Attentional focus on supra-postural tasks affects postural control

We examined whether the attentional focus adopted on a supra-postural task has an influence on postural control. Similar to Riley, Stoffregen, Grocki, and Turvey (Human Movement Science 18 (1999) 795), participants were instructed to stand still while lightly touching a loosely hanging sheet with their fingertips. However, instructions varied slightly under two conditions: Participants were either asked to minimize movements of the finger (internal focus) or to minimize movements of the sheet (external focus). In contrast to Riley et al.'s findings, both touch conditions resulted in increased postural sway, compared to a baseline condition (no touch). However, in line with previous findings (e.g., Wulf, McNevin, & Shea, Quarterly Journal of Experimental Psychology 54A (2001) 1143), frequency of responding (fast Fourier transformation) was greater under the external focus condition, compared to both internal focus and baseline conditions. The findings indicate improved static balance responses under external focus conditions and compromised static balance response under internal focus conditions.     

Neuromuscular effects of shifting the focus of attention in a simple force production task

Research on the focus of attention has begun exploring the physiological changes that underlie the difference between internal and external foci of attention. However, previous electromyography studies have used dynamic tasks, making it difficult to interpret electrophysiological data. The authors analyzed how the focus of attention affects a subject's ability to perform an isometric force production task (focus was directed either at the force platform or the muscles responsible for force production). Subjects received practice without attentional focus instructions and then completed blocks of trials with an external and internal attentional focus separately. An external focus led to significantly less error overall and reduced surface electromyography activity with lower median power frequencies in the antagonist muscle, but attentional focus had no effects on the agonist muscle. Thus, an external focus of attention led to more efficient motor unit recruitment patterns (reduced cocontraction) and improved performance. Posttest surveys revealed subjects were aware of their improved performance with an external focus.     

Hardiness and stress moderation: a test of proposed mechanisms

High and low hardy male and female undergraduates completed an evaluative threat task that was manipulated to influence appraisals of the task in a manner consistent with hardiness theory. High hardy subjects displayed higher frustration tolerance, appraised the task as less threatening, and responded to the task with more positive and less negative affect than did low hardy subjects. Although all subjects displayed increased heart rate (HR) in response to the experimental task, high hardy men displayed lower HR elevations during the task than did low hardy men. Hardiness did not influence HR responses among women. Manipulations of task appraisal revealed a similar pattern where men in the high hardiness appraisal conditions displayed lower levels of physiological arousal during the task than did men in the low hardiness appraisal conditions. Appraisal manipulations had either no effect or the opposite effect among women.     

Immediate effects of snoezelen® treatment on adult psychiatric patients and community controls

The effectiveness of Snoezelen® multi-sensory stimulation treatment was evaluated with 50 psychiatric patients (25 men, 25 women) and 50 hospital employees (25 men, 25 women). Pre and post-treatment physiological responses (galvanic skin conductance response, heart rate, and percentage blood oxygen) were compared and participants were evaluated post-treatment for perceived psychological benefits with a nine-item questionnaire. Results indicate that participation in a single 20-minute Snoezelen® session had significant and positive physiological effects on both the patient and staff groups. Also, post-treatment participants in both groups did not perceive any change on the dimension reserved-outgoing but felt more sleepy, passive, relaxed, cheerful, focused, optimistic, calm, and comfortable. Consequently, beneficial physiological and psychological Snoezelen® treatment effects were apparent for both patients and controls.     

Radio psychology: A comparison of listeners and non-listeners

The major objective of this study was the application of help-seeking models to the study of radio psychology. A total of 443 subjects was divided into two research groups, non-listeners (n = 246) and listeners (n = 197) to at least one of two Israeli radio counselling programmes dealing with parent-child and interpersonal relationships. Through telephone interviews the subjects' responses to the instruments designed specifically for this type of study were reported: listening motivations, attitudes towards psychological help and reasons for non-listening. The results revealed that while listeners do not necessarily perceive themselves as help-seekers they, as well as the non-listeners, attributed listening to the motivations of curiosity, comparison with others and attaining psychological knowledge. The results suggested that listening to radio psychology programmes is a means of facilitating the earlier stages of the help-seeking process.     

Immediate effects of snoezelen? treatment on adult psychiatric patients and community controls

The effectiveness of Snoezelen? multi-sensory stimulation treatment was evaluated with 50 psychiatric patients (25 men, 25 women) and 50 hospital employees (25 men, 25 women). Pre and post-treatment physiological responses (galvanic skin conductance response, heart rate, and percentage blood oxygen) were compared and participants were evaluated post-treatment for perceived psychological benefits with a nine-item questionnaire. Results indicate that participation in a single 20-minute Snoezelen? session had significant and positive physiological effects on both the patient and staff groups. Also, post-treatment participants in both groups did not perceive any change on the dimension reserved-outgoing but felt more sleepy, passive, relaxed, cheerful, focused, optimistic, calm, and comfortable. Consequently, beneficial physiological and psychological Snoezelen? treatment effects were apparent for both patients and controls.     

Exercise adherence or maintenance among older adults: 1-year follow-up study.

Follow-up evaluation was conducted of 101 older men and women (mean age = 67 +/- 5 years) who had participated in a randomized study of physiological and psychological effects of aerobic exercise. Eighty-five subjects completed the follow-up evaluation, and almost all of them (94%) reported continuing with physical activity, as assessed by a self-report measure. Total energy expenditure was calculated as an indicator of exercise maintenance, and energy expenditure at follow-up was predicted from measures of physiological functioning, psychological well-being, and cognitive functioning obtained at the conclusion of the structured exercise program. Greater cardiorespiratory endurance, faster psychomotor speed, and lower anxiety predicted exercise behavior at follow-up, accounting for 13% of the variance in exercise behavior. Gender was not a significant predictor of exercise behavior.