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PubMed1991

Muscular strength and bone density with weight training in middle-aged women.

Previous research has demonstrated positive correlations between bone mass and both physical activity and muscular strength. There is a paucity of information describing the specific type of exercise which most benefits the human skeleton. The effects of a 1 yr weight training program on 18 middle-aged women participating in an endurance dance program (E + W) compared with 17 other women in the endurance dance program only (E) and with 19 sedentary controls (C) were studied by measuring muscular strength and bone mineral density (BMD). Eighteen women in the E + W group demonstrated increases in all strength measurements, whereas the E and C groups either had smaller increases or had declined. A significant group x test interaction term, indicating that groups responded differently over time, was observed for nondominant isokinetic elbow flexion measured through the range of motion at a constant velocity of 60 degrees.s-1 (P less than 0.05), nondominant isokinetic elbow extension at 180 degrees.s-1 (P less than 0.01), and nondominant isokinetic elbow flexion at 180 degrees.s-1 (P less than 0.05). BMD did not change significantly except that a significant group x test interaction term appeared for the radius ultradistal site (P less than 0.01). BMD of the humerus and femoral Ward's triangle increased nonsignificantly in both E and E + W over the year. This weight training program increased muscular strength but did not increase measured bone mass.

Adult↗
PubMed1989

Eating disorders among selected female student populations at UCLA.

Seven hundred sixteen female UCLA students--drawn from Primary Care Clinic, Women's Health Clinic, sorority, athletic team, dance major, and undergraduate psychology class populations--completed questionnaires regarding eating disorders symptoms and attitudes compatible with the diagnostic criteria published by the American Psychiatric Association in the Diagnostic and Statistical Manual, (3rd ed., DSM-III), the Eating Disorders Inventory, and related information. The purpose of the study was to determine the prevalence of eating disorders and eating disorder-related symptoms in particular subgroups for targeting intervention and prevention programs. Although between 7.5% and 46% of subgroup populations reported the presence of individual eating disorder-related symptoms, the prevalence of active eating disorders for the group as a whole at the time of the survey was 2.1%, with the prevalence of disorders at any time during life 4.8%, using DSM-III diagnosis. The Eating Disorders Inventory scores for the group as a whole were comparable with norms reported by other researchers in the literature. Primary Care Clinic attenders and dance majors reported the highest rates of symptoms and disorders, while athletes reported the lowest rates.

Adult↗
PubMedDate not supplied

Self-reported factors influencing exercise adherence in overweight women.

The purpose of this study was to determine the effect of intensity-controlled, graded dance exercise and selected components of behavior modification on exercise adherence in overweight middle-aged women. Thirty-eight moderately overweight women, aged 35 to 58, participated in a 16 1/2 week dance exercise program. Participants were randomly assigned to an experimental group (n = 20) that received intensity-controlled, graded exercise and individual and group reinforcement, or to a control group (n = 18) that exercised at a moderate intensity typical of commercial fitness classes and received no special reinforcement. Before exercise training began and at the completion of 16 1/2 weeks, a structured, open-ended interview was conducted. Ninety-four percent of the women in both groups adhered to the program, an exceptionally high adherence rate for this population. Eight participant-identified factors seemed to have influenced exercise adherence: group homogeneity, carpooling and social networks, pleasurable feelings associated with increased energy and fitness, leader with a health-related background, time limitation of exercise program, commitment to an established goal, desire to change body image, and desire to change health status and improve physical health.

Adult↗
PubMedDate not supplied

Diagnosis and treatment in dancers.

Dancers present problems that develop slowly and require a specialized approach for diagnosis and treatment. Five hundred dancers were evaluated at the author's clinic over a nine-year period. They were treated for their particular complaint and were also observed to determine other possible conditions associated with spine, hip, knee, ankle, and foot. Most of the problems occurring in dancers develop subtly over a period of time rather than through a single traumatic episode. Considerable time often elapsed before a diagnosis was made because complaints of pain were suppressed. Techniques of bone scanning and computerized tomographic (CT) scanning are now used as daily tools in diagnosis and treatment. Foot and ankle problems were most commonly observed. Poor dance technique and lack of self-discipline were often responsible for exacerbation of otherwise mild symptoms from overuse syndromes. A working knowledge of dance and the artistic personality is important in the diagnosis and treatment of dancers' injuries.

Ankle Injuries↗
PubMed1983

Disorders of the great toe in dancers.

Although often neglected in the consideration of dancing and sports injuries, the great toe is as important as the other large joints of the lower limb. Many injuries to the great toe are associated with technical faults occurring during dancing, and these should be corrected or the injury will recur. It is also important that when a dancer presents with an injury elsewhere, the possibility of faults at the great toe be considered.

Dancing↗
PubMed1995

Contributions of exercise, body composition, and age to bone mineral density in premenopausal women.

The purpose of this cross-sectional study were to determine whether exercisers have greater bone mineral density (BMD) than nonexercisers, whether aerobic dancers have greater BMD than walkers, and to determine the contributions of energy expenditure, body composition, and dietary factors to spine and femur BMD. Measurements were obtained on 93 eumenorrheic women (walkers N = 28; aerobic dancers, N = 34; nonexercisers, N = 31) ages 25-41 yr; lumbar spine and proximal femur BMD, body composition, physical activity, and nutrient intakes. Mean height, weight, and body mass index and median age and calcium intakes were similar for the three groups. Mean (+/- SD) values of the spine, total femur, and femoral neck BMD, respectively, were: walkers (1.092 (+/- 0.098), 0.947 g.cm-2), dancers (1.070 (+/- 0.124), 0.990 (+/- 0.104), 0.908 (+/- 0.106) g.cm-2), and nonexercisers (1.020 (+/- 0.112), 0.887 (+/- 0.073), 0.792 (+/- 0.089) g.cm-2) multiple regression analyses indicated that exercise contributed to spine (P = 0.018), total femur (P =0.012), and femoral neck (P < 0.0001) BMD, whereas type of exercise (aerobic dance vs walking) did not (P > 0.05). Total femoral BMD was influenced by exercise (P = 0.012) and energy expenditure (P = 0.023), while vertebral BMD was influenced by age (P = 0.0067), body weight (P = 0.017), and exercise (P = 0.018). These findings suggest that walking and aerobic dance exercise may provide physically active premenopausal women with greater lumbar and femoral BMD than sedentary females.

Adult↗
PubMed1997

Raves, drugs and experience: drug use by a sample of people who attend raves in Western Australia.

AIMS: To investigate the patterns of drug use among a sample of people in the rave scene in Perth, Western Australia and test the hypothesis that those who were less experienced in their drug use had less drug-related knowledge. DESIGN: Respondents were recruited through flyers in cafes, clothing and music stores and through snowballing. They were paid $20 for a 1 1/2 hour interview which comprised both qualitative and quantitative components. SETTING: Respondents were interviewed in cafes or restaurants, private dwellings, agencies or other public spaces. PARTICIPANTS: Eighty-three people who had been to a rave in the prior 6 months. Their mean age was 18.9 years (range 13-48) and 53% were male. MEASUREMENTS: Brief history of drug use, HIV risk behaviour, knowledge of drug-related harm and side effects experienced from drugs. FINDINGS: The group was unremarkable apart from their drug use. Ninety per cent of respondents had ever used LSD, 76% had used ecstasy and 69% had used amphetamines. Before, during or after the last rave attended 52% used cannabis and 35% had used each of amphetamines and LSD. Those who were less experienced in their drug use had less knowledge about drugs. Many respondents began using 'dance drugs' while they were still at school. CONCLUSIONS: Those with less drug-using experience may have less drug-related knowledge and may be at greater risk of harm. Strategies should be implemented which involve people in the scene, promoters, health workers and the authorities to reduce drug-related harm associated with raves and other dance events.

Adolescent↗
PubMed2005

Charcot revisited: the case of Bruegel's chorea.

Since Jean-Martin Charcot's time, Pieter Bruegel has been invoked as a famous contributor to the iconography of chorea. This is based not on a picture by Bruegel himself but on a 19th century engraving declared by Charcot to depict St Vitus' dance or chorea germanorum, a form of mass hysteria. A search through the art history literature did not find chorea or St Vitus' dance as a subject of any of Bruegel's works. However, the picture presented by Charcot appeared to be based on a composition that features a pilgrimage of patients suffering from St John's disease or falling sickness, one of the many names applied to epilepsy. This study traces the history of Charcot's allusions to Bruegel's picture and explores the little-known works--drawings, engravings, and paintings--based on Bruegel's composition in the context of chorea, epilepsy, and hysteria. The conclusion of this study is that while Charcot ignored the precise details of Bruegel's composition, his overall interpretation was correct. Beyond any specific diagnosis, Bruegel's work remains universal, giving a unique and compelling picture of human suffering and of the plight of devoted caregivers.

Charcot-Marie-Tooth Disease↗
PubMed1984

Trifluoperazine-induced changes in swimming behavior of paramecium: evidence for two sites of drug action.

Trifluoperazine (TFP), a drug that binds to Ca2+-calmodulin (CaM) complexes, altered swimming behavior not only in living paramecia, but also in reactivated, Triton-extracted "models" of the ciliate. By comparing the responses of living cells and models, we have ascertained that two sites of drug action exist in paramecium cilia. Swimming movements were recorded in darkfield stroboscopic flash photomicrographs; this permitted accurate quantitation of velocities and body-shape parameters. When living paramecia were incubated in a standard buffer containing 10 microM TFP, their speed of forward swimming fell over several minutes and their bodies shortened. Untreated paramecia backed up repeatedly and frequently upon transfer to a solution containing barium ions (the "barium dance"), but cells preincubated in TFP did not "dance." Instead they swam forward slowly for long periods of time without reversing and occasionally then exhibited abnormally prolonged reversals. W7 effects on swimming mimicked low doses of TFP, and the analog W5 did not visibly alter normal swimming patterns. These results suggest that TFP induces a decrease in the intracellular pCa of living paramecia, perhaps by reducing the efficiency of a calmodulin-activated calcium pump in the cell membrane. Paramecia extracted with Triton X-100 and reactivated to swim forward (7 greater than or equal to pCa greater than or equal to 6) were not affected by addition of up to 40 microM TFP to the reactivation medium. We conclude that the main drug effect in living cells is probably not at the axoneme. However, at low pCa, TFP directly affected the ciliary axoneme to shift its behavior to one characteristic of a higher pCa: TFP inhibited backward swimming in models reactivated at pCa less than 6; instead they swam forward or rocked in place. The mechanism of ciliary reversal in paramecium may therefore depend on an axonemal Ca2+-sensor, possibly bound CaM, which is affected by TFP only at low pCa, as has been postulated for other types of cilia.

Animals↗
PubMed2006

Neural circuits subserving the retrieval of stems and grammatical features in regular and irregular verbs.

Many languages, including English and Spanish, feature regular (dance --> danced) and irregular (catch --> caught) inflectional systems. According to psycholinguistic theories, regular and irregular inflections are instantiated either by a single or by two specialized mechanisms. Those theories differ in their assumptions concerning the underlying information necessary for the processing of regular verbs. Whereas single mechanism accounts have stated an increased involvement of phonological processing for regular verbs, dual accounts emphasize the prominence of grammatical information. Using event-related functional magnetic resonance imaging, we sought to delineate the brain areas involved in the generation of complex verb forms in Spanish. This language has the advantage of isolating specific differences in the regular-irregular contrasts in terms of the number of stems associated with a verb while controlling for compositionality (regular and irregular verbs apply suffixes to be inflected). The present study showed that areas related to grammatical processing are active for both types of verbs (left opercular inferior frontal gyrus). In addition, major differences between regular and irregular verbs were also observed. Several areas of the prefrontal cortex were selectively active for irregular production, presumably reflecting their role in lexical retrieval (bilateral inferior frontal area and dorsolateral prefrontal cortex). Regular verbs, however, showed increased activation in areas related to grammatical processing (anterior superior temporal gyrus/insular cortex) and in the left hippocampus, the latter possibly related to a greater implication of the phonological loop necessary for the reutilization of the same stem shared across all forms in regular verbs.

Adult↗
PubMed1994

Sexual differentiation of brain and behavior in the zebra finch: critical periods for effects of early estrogen treatment.

In order to determine the critical period(s) during which estrogen alters sexually dimorphic behavior and neuroanatomy in zebra finches (Poephila guttata), nestlings were injected daily with 20 micrograms estradiol benzoate (EB) during posthatching week 1, week 2, week 3, or weeks 1, 2, and 3. At 7 months of age, birds were implanted with testosterone propionate and tested with female partners for singing, dancing, and copulatory mounting. Brains were subsequently processed for morphometry, and the volumes of the song system nuclei HVC, area X, and RA and the soma sizes and densities of neurons in RA were determined. Males given EB during week 1 failed to mount. Females given EB during week 1 were fully masculinized with respect to dancing and RA neuron soma size and density, and were partially masculinized with respect to song nuclei volumes and singing. Treatment beginning after week 1 was ineffective or less effective for all measures. Only for RA neuron measures was treatment for all three weeks more effective than week 1 treatment. Thus the first post-hatching week is the most influential period of those tested for effects of exogenous estrogen on sexual differentiation in this species, and is a period during which both masculinization of females and demasculinization of males is possible.

Animals↗
PubMed1975

Sexuality in Samoan art forms.

This article explores the manifestations of sexuality in Samona as they are revealed through songs, poetry, dance, gestures, verbal expressions, stories, and games. For each of these art forms, texts, and translations of original material are presented, as an aid to discerning the uses and functions of sexuality as they are applied by Samoans for Samoans; to this end, formulalized joking of various types is seen as the medium through which the humorous element of sexuality is expressed. Elsewhere, sexuality functions to achieve and sustain individual attention. The explicitly sexuality functions to achieve and sustain individual attention. The explicitly sexual references in duneral and marriage songs, on the other hand, constitute affirmations of social values, incorporated in long-established rites. In what is tantamount to artistic license, performance of song, poetry, and dance containing sexual elements or references that would be prohibited in other contexts is constituted as acceptable behavior. In marked contrast to nineteenth-century writings, and the opinions of the popular press, sexuality in Samoa is far from free in its modes of expression, but rather adheres to traditional formalized patterns which determine its occasions, participants, and verbal and kinetic limits. Although not indispensable as a means of personal expression, it generally provides additional opportunities for the creative and aggressive individual to demonstarate his artistic talents and therby contribute to his own social elevation. As an element of verbalized group sentiment, it is a positive assertion of Samoan values, astatement of social solidarity.

Adolescent↗
PubMed2006

Diffusive transport in Stokeslet flow and its application to plankton ecology.

In this paper we consider the advective/diffusive transport of a solute near a hovering zooplankter. We approximate the fluid flow with that of a Stokeslet, corresponding to the plankter exerting a point force on the water, and assume that the plankter acts as a point source for the transported solute, located at the same point as the force. We find an analytical expression in closed form for the steady-state concentration of the solute. We also discuss the situation where the plankter performs Brownian motion. Finally we apply the results to the courtship of the marine copepod Pseudocalanus elongatus, where the male performs a mating dance below the hovering female. For this situation, our model supports the hypothesis that the mating dance is guided by the plume of a signalling pheromone.

Animals↗
PubMed2001

An abnormal striatal synaptic plasticity may account for the selective neuronal vulnerability in Huntington's disease.

A marked decrease in the activity of mitochondrial complex II (succinate dehydrogenase, SD) has been found in the brains of Huntington's disease (HD) patients. Here we have examined the possibility that SD inhibitors might produce their toxic action by increasing corticostriatal glutamatergic transmission. We report that SD inhibitors produce a durable augmentation of NMDA-mediated corticostriatal excitation (DANCE) in striatal spiny neurons, but not in striatal cholinergic interneurons. DANCE involves increased intracellular calcium, activation of MAP kinase ERK and is critically dependent upon endogenous dopamine (DA) acting via D2-like receptors. This pathological form of corticostriatal synaptic plasticity might play a key role in the regional and cell-type specific neuronal death observed in HD.

Animals↗
PubMed1982

Determining populations at risk for developing anorexia nervosa based on selection of college major.

The prevalence of symptoms of anorexia nervosa among students majoring in the areas of dance, drama, physical education, and English was determined by using the Eating Attitudes Test (EAT). It was hypothesized that female students who might be prone to develop anorexia nervosa as indicated by anorectic symptoms on the EAT would concentrate in areas of study emphasizing exercise and body image. Results indicate the prevalence of anorectic symptoms among the dance and drama majors to be significantly higher than in the English and physical education groups. These findings are compatible with the belief that individuals at risk for developing anorexia nervosa will gravitate toward areas of culture where there is increased focus on body image but not on physical exercise.

Adult↗
PubMedDate not supplied

Psychorehabilitation aspects in older age groups.

Throughout medical history, suggestion is the oldest and most common method of relieving human distress and treating physical disease. One of the oldest Egyptian documents, the Ebers Papyrus (1552 BC) states, "Lay your hands upon him to quiet the pain in the arms and say that the pain will disappear." The psychogenic and therapeutic potency of Native American trance dances are also well documented. In a North American tribe practicing ancient traditions, such dances were found to produce an altered feeling for time, loss of conscious control, drastic emotional outbreaks, illusions, hypersuggestibility, and a deep feeling of restored youthfulness (Jilek, 1982). These and other historical documents show the deep historical connection between somatic and mental processes. From the viewpoint of a neurologist or a psychiatrist, a combination of somatic illness, depressive syndromes, organic psychosyndromes, and multimorbidity is frequent in elderly patients (Kortus, 1992). Thus, integrated psychotherapy in geriatric rehabilitation is necessary and useful. Practical psychotherapeutic methods are discussed in this manuscript.

Autogenic Training↗
PubMed2006

Reduced ability of ethanol drinkers for social communication in honeybees (Apis mellifera carnica Poll.).

Foraging behavior was evaluated in honeybees trained to fly to a feeder containing sucrose only, 1% ethanol, 5% ethanol, or 10% ethanol. The results indicated that exposure to ethanol disrupted several types of honeybee social behavior within the hive. Consumption of ethanol at the feeding site reduced waggle dance activity in foraging bees and increased occurrence of tremble dance, food exchange, and self-cleaning behavior. These ethanol-induced changes in behavior may reflect effects on the central nervous system similar to the previously observed effects of food poisoning with sublethal doses of insecticides.

Alcohol Drinking↗
PubMed2004

Fertilization success and sexual behavior in male medaka, Oryzias latipes, exposed to tributyltin.

We evaluated the effects of tributyltin (TBT), polychlorinated biphenyls (PCBs), and a mixture of TBT and PCBs on reproduction, gonadal histology, and sexual behavior in Japanese medaka (Oryzias latipes). We administered TBT (1 microg g(-1) body weight [b.w.] daily), PCBs (1 microg g(-1) b.w. daily), or both to medaka for 3 weeks. We assessed reproductive success during week 3 and the sexual behavior of male medaka after the exposure period. Fertilization success was significantly decreased in groups that received TBT. The profiles of fertility developed a bimodal distribution in the TBT and TBT+PCBs groups, and the numbers of males that performed "following" and "dancing" were significantly decreased in the TBT+PCBs group. The frequency of "dancing" also decreased after treatment with TBT, whereas fish that received PCBs only showed no difference in sexual behavior. Testes that had oocytes showed normal spermatogenesis, even though two of the five males treated with TBT+PCBs had some indication of testis-ova, which did not occur in any other group. Our results indicate that TBT, but not PCBs, affects sexual behavior and reproduction in medaka.

Animals↗