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Query: UMLS:C0015672 (fatigue)
 51,768 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This investigation examined the receipt of professional counseling services in response to problems related to stress in one state-wide sample of special education teachers. An analysis of variance was conducted for each stress variable to estimate the significance of mean differences between groups of counseling recipients and nonrecipients. Most comparisons indicated significantly stronger and more frequent stressful experiences for counseling recipients than for nonrecipients with respect to scores on Professional Distress, Emotional Manifestations, Physiological-Fatigue Manifestations, and Total Stress.
Percept Mot Skills 1987 Dec
PMID:Occupational stress and receipt of professional counseling in special education. 343 46

6 experienced orienteers were subject to a VO2max treadmill test, two days prior to undertaking two tests of visual perception. One test was conducted while the subjects were in a rested state while the other was conducted while they were under a state of fatigue. Fatigue was defined as a state in which the subjects were working at or above their anaerobic threshold which had been determined previously from their VO2max test. The tests in both the fatigue and rest condition were of a similar nature, that is, the subjects were presented slides of orienteering checkpoints at regular intervals followed by a slide showing a set of questions which the subjects had to answer verbally. Two sets of slides were employed and these were approximately counterbalanced between both subjects and conditions. Points were awarded for the correct answers and the two conditions were then compared. The Wilcoxon test for two correlated samples was used and showed a significant difference between the fatigue and rest scores at p less than 0.05. The data suggest that under the influence of fatigue, an orienteer's ability to perceive visual information is greatly impaired.
Percept Mot Skills 1986 Apr
PMID:Effects of fatigue on ability to process visual information by experienced orienteers. 350 56

18 normal, self-reported dextral subjects (9 men, 9 women) were assessed with a Halstead Manual Finger Tapping device, with 10 trials per hand for 10 consecutive wk. The test-retest reliability of the 10-trial average between the 10 sessions averaged .94 for men and .86 for women, for both preferred and nonpreferred hands. There were no statistically significant effects of increases in performance over sessions or effects of fatigue over trials for either sex or hand. There were, however, significant increases over trials for men for both preferred and nonpreferred hands.
Percept Mot Skills 1986 Apr
PMID:Finger tapping: effects of trials and sessions. 350 82

Epidemiological, behavioral and etiological variables related to sleep disturbances were investigated in a survey of 1695 children in Grades 1 to 12 from 11 randomly selected schools. Sleep-walking, nightmares and sleep-talking were strongly associated with each other as well as to a family history of sleep-walking. Enuresis, however, was not related to the other sleep variables. Socioeconomic status of father was weakly related to enuresis and sleep-talking but not to sleep-walking or nightmares. Gender was not related to any of the sleep disturbances. The behavioral variables, physical activity, attention, emotional excitability, and feelings easily hurt showed a small association with the sleep disturbances. Parents most frequently attributed causes of sleep-walking and nightmares to over-tiredness and over-excitement. As well, parents' comments indicated that they tend to associate specific events such as illness or more often, frightening TV content with nightmares, but not sleep-walking.
Percept Mot Skills 1987 Jun
PMID:Selected sleep disturbances in school children reported by parents: prevalence, interrelationships, behavioral correlates and parental attributions. 362 16

The authors have studied the results of 91 extra-articular ligamentoplasties amongst 104 knees treated surgically for chronic anterior laxity of the knee. The technique used in 40 cases was a Lemaire isolated lateral extra-articular ligamentoplasty using a strip of fascia lata and in 51 cases a double plasty, combining the same lateral plasty with a tightening of the posteromedial capsule and a forward transfer of the semimembranosus. The follow-up was from one to seven years, with a mean of four years. The results were assessed using the "ARPEGE" (Research Association for the Study of the Knee) scoring system, based on ability to undertake sports, functional stability, pain, resistance to fatigue, mobility and residual laxity. The overall results were excellent in 51 per cent, good in 10 per cent, fair in 10.5 per cent and bad in 28.5 per cent of cases. These results may seem to be unsatisfactory but a detailed study of the failures showed some errors in the indications for surgery which could have been avoided by a full appreciation of the type of laxity, the post-operative needs of the patient, his age and the level of sporting activity. Meniscectomy and lesions of the articular cartilage had a disturbing effect on the results. This study indicates a more precise place for extra-articular ligamentoplasties compared with in situ reconstructions of the anterior cruciate ligament.
Rev Chir Orthop Reparatrice Appar Mot 1987
PMID:[The role of peripheral capsulo-ligamentoplasties in the treatment of chronic anterior instability of the knee. Apropos of a series of 104 cases]. 365 51

Baddeley's Logical Reasoning Test was used in a series of Sustained Operations (SUSOP) studies involving 100 US Marine Corps enlisted subjects, to assess the effects of sleep loss and long-term physical exercise on the ability to process complex information. The percent correct answers to the eight Logical Reasoning sentence types involving different voice (active vs passive), use of negatives, and outcome (true vs false) were analyzed over three days across three levels of exercise and rest conditions in the seven studies. A multivariate analysis of variance indicated no differences on the baseline day among the seven studies. Analyses on the baseline day and throughout the next two continuous workdays (CWs) showed consistently higher percent correct for the actively worded than for the passively worded sentences. The sleep loss over the two CWs resulted in a significant decrease in percent correct for the statements which had active wording. Sleep loss had no effect on statements with passive wording. There were no differences in comprehension between groups which had different rest conditions (no rest, 3- or 4-hr. nap, 8-hr. sleep) between the two CWs for any of the sentences; and there was no recovery from prerest to postrest. Fatigue due to exercise during either CW had no effect on comprehension for any of the sentence types. The sleep loss effects on comprehension seem due to a lessening of the attention given to those more simple sentences in active voice, whereas increased arousal may have been elicited by the more complex sentences in passive voice. The increased attention to the passive statements may have overcome the effects of sleep loss. The present study shows the usefulness of analyzing responses to the logical reasoning test by sentence complexity for indicating selective cognitive changes in the processing of information.
Percept Mot Skills 1985 Dec
PMID:Decrements in logical reasoning performance under conditions of sleep loss and physical exercise: the factor of sentence complexity. 409 59

12 normal, self-reported dextral subjects (6 men, 6 women) were assessed with a hand dynamometer with 10 trials per hand for 10 consecutive wk. The test-retest reliability of the 10-trial average across the 10 sessions averaged .91 for men and .94 for women for both preferred and nonpreferred hands. Fatigue effects over trials were statistically significant for both sexes and hands except for women's preferred hand. Skill acquisition effects over sessions were only statistically significant for men's nonpreferred and women's preferred hands.
Percept Mot Skills 1985 Dec
PMID:Hand dynamometer: effects of trials and sessions. 409 60

Effects of physical, mental, and vigilance fatigue on the autokinetic reports of 48 undergraduate students are described. Eight response measures were taken of the subjects with an apparatus that permitted recording of the apparent motion of the autokinetic stimulus in the same plane as the light source. Presence of the fatigue states was verified by independent measurements. Fatigue conditions facilitated quick and continuous perception of the autokinetic movements. The most perceptual complexity in the patterns of apparent motion was observed under mental fatigue followed by physical and vigilance fatigue, with least in the neutral condition.
Percept Mot Skills 1983 Feb
PMID:Autokinesis and some conditions of fatigue. 613 62

Peripheral Critical Flicker Fusion technology was explored as a basis for inferred differences between right and left cortical hemispheric activity following exercise. 18 subjects underwent three treatments presented in randomized order with 1-wk. intervals in between them. Conditions included a control, 30 min. of steady-state treadmill running, and 20 min. of treadmill running followed by progressively increasing speed until exhaustion intervened. Immediately following each treatment, subjects were given a test of peripheral critical flicker fusion as measured in both peripheral retinal fields. Differences between right and left peripheral retinal field perception were analyzed for the three conditions with a one-way analysis of variance using a repeated-measures design. A significant difference was found among the three treatments for peripheral CFF differences between right and left peripheral fields. A Newman-Keuls test demonstrated a significant shift in cortical activation toward the left hemisphere following the exhaustive exercise. The inferred shift in cortical activity inferred from peripheral CFF, occurs following exhaustive exercise. The left hemisphere was viewed as the dominant locus of cortical activation in that fatigue state.
Percept Mot Skills 1982 Jun
PMID:Technique for differentiating cortical hemispheric activity following exercise. 709 4

The present study was designed to investigate the effects of different types of physical fatigue-past demand for exertion-on the performance of a visual detection task performed with and without masking. 31 male subjects were first administered a VO2 max test and familiarized with the detection task. They were divided into two groups to control potential effects of masking. They were subjected to three experimental treatment involving the utilization of different sources of energy: (a) a short anaerobic alactic acid effort recruiting phosphocreatine, (b) a supramaximal effort (anaerobic lactic acid) recruiting glycogen without oxygen, and (c) a progressive (partially anaerobic) effort recruiting glycogen and oxygen. All three were performed on a treadmill. Blood samples were collected for the anaerobic lactacid and the partially anaerobic exercises. Once fatigued, all subjects undertook the detection task. A 2 X 3 X 2 X 8 analysis of variance, with repeated measures on the last three factors, was applied to the data (mask/no mask X type of exercise X pre-post performance measures X location of the letter to be detected). No significant difference was found for either the main effects or interactions, except for the location of the letter and the mask/no mask condition. It appears therefore that a physically fit population (mean VO2 max = 62.39 ml X kg(-1) X min(-1)) shows no detectable decrement in a perceptual task performed after fatiguing exercises recruiting various types of energy sources.
Percept Mot Skills 1981 Dec
PMID:Influence of different types of physical fatigue on a visual detection task. 732 75


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