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

The professional ballet dancer presents all of the problems of any vigorous athlete. The problems include osteochondral fractures, fatigue fractures, sprains, chronic ligamentous instability of the knee, meniscal tears, impingement syndrome, degenerative arthritis of multiple joints and low back pain. Attention to minor problems with sound conservative therapy can avoid many major developments and lost hours. Observations included the extraordinary external rotation of at the hip without demonstrable alteration in the hip version angle and hypertrophy of the femur, tibia and particularly the second metatarsal (in female dancers). Careful evaluation of the range of motion of the extremities, serial roentgenographic examination, and systematic review of previous injuries, training programs and rehearsal techniques have been evaluated in a series of cases to provide the basis for advice to directors and teachers of the ballet.
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PMID:A new consideration in athletic injuries. The classical ballet dancer. 12 36

The first results of a study of Luschka's accessory tubercle and Broca's styloid hypophysis, and especially of osteotendinitis which can arise from musculo-tendinous fatigue in this zone insertion. This osteotendinitis, whose radiological demonstration is difficult and rarely done, can possibly explain undoubtedly certain cases of localized lumbago.
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PMID:[Comments on the accessory tubercle of the lumbar costiform apophysis (author's transl)]. 13 70

Two hundred and ninety-five male Finnish concrete reinforcement workers, aged 19 to 64 years and engaged in heavy physical work including prolonged stooping, were radiologically examined by antero-posterior and lateral views of the lumbar spine while they were standing. The findings of lumbar disc degeneration were classified as none, slight, moderate or severe. The prevalence and degree of radiologically detectable lumbar disc degeneration depended strongly on age and increased especially rapidly from 40 to 44 years on. Lumbar disc degeneration showed an age-independent association to both a history of lumbago (chi2 = 10.5, p less than 0.01) and a history of sciatica (chi2 = 11.8, p less than 0.001). When disc degeneration was compared to reports of stiffness, fatigue, ache, and sharp pain in the back during an ordinary workday, no statistically significant associations were found, while disc degeneration was found to be slightly more common (chi2 = 4.6, p less than0.05) in the men reporting back symptoms as they bent down than in the men who did not report such symptoms. No association between length of exposure to static and dynamic back loads in reinforcement work and the prevalence of lumbar disc degeneration could be established, but definite conclusions on the possible effect of reinforcement work on the lumbar spine could not be drawn from the data.
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PMID:Radiologically detectable lumbar disc degeneration in concrete reinforcement workers. 66 71

The health condition of female cash register operators in relation to their working conditions was investigated. A questionnaire study revealed that cash register operators more frequently complained of general fatigue, headache, sleeplessness, and low back pain than female office machine operators or other female workers. Dullness and pain in the shoulder, arm, hand, and fingers especially on the right side were characteristic of cash register operators. Physical examinations in 1973 showed that 31.3% of 371 cash register operators suffered from muscle rigidity or tenderness; 13 were severely afficted and, 69 operators had to be either laid off, reassigned to other jobs, or given shorter working hours. Occupational cervicobrachial disorders were suggested to have been caused by repetitive upper limb motions combined with static load, an unfavorable working environment, and mental stress. Implementation of some improvements including shorter operation time, worker rotation, and adoption of electronic registers proved effective in reducing the number of sufferers of cervicobrachial disorders found during the 1975 physical examinations. But the improvements were not effective enough to alleviate fatigue of the neck, shoulder, and back due presumably to sustaining upper limbs while operating the keyboard.
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PMID:Health hazard among cash register operators and the effect of improved working conditions. 102 12

This preliminary study represents 10% of the workers in this occupation in Bangalore. The industry is highly commercial in nature and the city of Bangalore; has the largest number of units in Karnataka State. The study provides base line data relating to some morbidity conditions for future comparisons. Low back ache, tiredness, head ache, irritation in the eyes, sleeplessness, joint pains, chest pain, postural giddiness, persistent running nose, abdominal pain, cough and tremors of hands, were some of the common conditions elicited among the workers. Some of the conditions were identified to be possibly related to various processes within the industry. Particularly low back ache and irritation in the eyes (rolling and dipping), tremors of hands (packing). It is very likely that in the final stages when certain chemical ingredients are added which finally give the scent, the chances of pollutants entering either through skin or inhalation is possible. Environmental monitoring has not shown any appreciable dust hazard. The study has helped in identifying some of the areas in the work environment which required improvement. There is a need for social workers, medical personnel and industrial hygienists to explore the possibilities of minimizing possible hazards. A national sampling survey in other parts of the country might also be beneficial.
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PMID:An enquiry into work environmental status and health of workers involved in production of incense sticks in city of Bangalore. 130 84

To study the effects of construction machinery operation on subjective symptoms, a questionnaire survey was carried out among construction machinery operators by a self-reporting method. Subjects were 184 power shovel operators, 127 bulldozer operators, 44 forklift operators as operator groups, and 44 office workers as a control. Their ages were in a range of 30-49 years. The questionnaire contained 20 symptoms referring to fatigue, digestive problems, and upper or lower limbs or back problems. The prevalence rate and symptom characteristics were examined. The dominant symptoms of the operator groups were stiff shoulder, low back pain, and stomach symptoms. The prevalence rate of low back pain was significantly different between forklift operators and controls. No significant differences were found in the symptoms of upper limbs and fingers between operator groups and controls. The prevalence of Raynaud's phenomenon was 0.5%-2.3% in the operator groups and 2.3% in the control group.
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PMID:Symptoms of construction workers exposed to whole body vibration and local vibration. 148 32

The study examined the work stresses of 107 women who were engaged in sewing machine operation in small garment manufacturing units. Of the three types of sewing machines (motor-operated, full and half shuttle foot-operated), 74% of the machines were foot-operated, where throttle action of the lower limb is required to move the shuttle of the machine. The motor-operated machines were faster than the foot-operated machines. The short cycle sewing work involves repetitive action of hand and feet. The women had to maintain a constant seated position on a stool without backrest and the body inclined forward. Long-term sewing work had a cumulative load on the musculo-skeletal structures, including the vertebral column and reflected in the form of high prevalence of discomfort and pain in different body parts. About 68% of the women complained of back pain, among whom 35% reported a persistent low back pain. Common sewing work accident is piercing of the needle through the fingers, particularly the right forefingers. Unsatisfactory man-machine incompatibility, work posture and fatigue, improper coordination of eye, leg and hand are the major problems of the operators. The design mis-match of the work place may be significantly improved by taking women's anthropometric dimensions in modifying the workplace, i.e. the seat surface, seat height, work height, backrest, etc.
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PMID:Work stress of women in sewing machine operation. 149 Nov 71

Two studies investigated the use of lumbar integrated electromyography (iEMG) during flexion-extension exercises of the lumbar spine. The first study compared the iEMG fatigue slopes of 12 pain-free controls during a standardized isotonic workout with a heavy weight and a light weight. Results indicated that the slopes of the iEMG across flexion-extension repetition was negative in both conditions, with the heavy weight producing significantly steeper fatigue slopes. In the second study, iEMG was compared from 16 chronic low back pain (CLBP) patients and 12 asymptomatic controls during isotonic exercise. Integrated EMG was recorded during 18 lumbar extension-flexion cycles (3 min) at a standard pace. Each subject exercised at a weight equal to 60% of his maximum isometric torque produced at the most extended position. Results indicated significantly less iEMG was produced by the CLBP group during both concentric and eccentric exertion. For both groups, eccentric exertion produced significantly less iEMG than concentric exertion. The groups showed significantly different iEMG fatigue slopes, with the control group showing declining iEMG by repetition, while the CLBP group showed flatter, slightly increasing iEMG. This occurred for both eccentric and concentric comparisons. A muscle deficiency model of CLBP is supported and results suggest the importance of endurance factors in addition to strength in rehabilitation efforts. Results also suggest the possibility of using this methodology for detecting insincere efforts in lumbar spine assessment.
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PMID:Lumbar iEMG during isotonic exercise: chronic low back pain patients versus controls. 153 29

There are now many studies suggesting a positive relationship between both low back pain and spinal degeneration and exposure to whole body vibration. Such relationships appear to be particularly marked in drivers of tractors, earth-moving equipment, and trucks. There is a tendency toward a greater incidence of complaints as exposure increases. Vibration affects the spine by exciting a 4-6-Hz resonance that is related to the biologic "soft spring" between S-1 and the seat. The muscle nerves fire sequentially under vibration and fatigue. In animals, vibration exposure leads to pronounced creep, increased disk pressure, and changes in the levels of neuropeptides in the dorsal root ganglia.
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PMID:Vibration of the spine and low back pain. 153 24

A 76-year-old man was admitted because of general fatigue and lumbago. Two years before admission, hyponatremia and hyperkalemia were pointed out, subsequently hydrocortisone (20 mg/day) was given under the diagnosis of panhypopituitarism. The marked improvement was found in the electrolytes abnormality. On examination at admission, there was no abnormality of anterior pituitary function. In addition to the extremely low level of plasma renin activity and aldosterone concentration, the persistent microhematuria and hyperuricemia were found, however, renal histology only showed the benign arteriosclerosis but no significant alteration in juxtaglomerular apparatus and glomeruli. The urinary prostacyclin metabolite output was rather increased compared to that of normal subject, suggesting that prostaglandins may not be responsible for the defect of renin secretion. Although, the cause was still unknown, small dose of dexamethasone was extremely effective to resolve electrolytes abnormality and hematuria.
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PMID:[A case of hyporeninemic hypoaldosteronism improved by dexamethasone treatment]. 160 44


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