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At least 19 recordsLinked to original sources

Genetic control of the honey bee (Apis mellifera) dance language: segregating dance forms in a backcrossed colony.

We studied the genetic control of the dance dialects that exist in the different subspecies of honey bees (Apis mellifera) by observing the variation in dance form observed in a backcross between two lines that showed widely different dance dialects. To do this we generated the reciprocal of the cross performed by Rinderer and Beaman (1995), thus producing phenotypic segregation of dance forms within a single colony rather than between colonies. Our results are consistent with Rinderer and Beaman (1995) in that inheritance of the transition point from round dancing --> waggle dancing is consistent with control by a single locus with more than one allele. That is, we found one dance type to be dominant in the F(1), and observed a 1:1 segregation of dance in a backcross involving the F(1) and the recessive parent. However, we found some minor differences in dance dialect inheritance, with the most significant being an apparent reversal of dominance between our cross (for us "black" is the dominant dialect) and that of Rinderer and Beaman (1995) (they report "yellow" to be the dominant dialect). We also found that our black bees do not perform a distinct sickle dance, whereas the black bees used by Rinderer and Beaman (1995) did perform such a dance. However, our difference in dominance need not contradict the results of Rinderer and Beaman (1995), as there is no evidence that body color and dominance for dance dialect are linked.

Animal Communication↗

The effect of dance training on menstrual function in collegiate dancing students.

A total of 98 dancing students from a collegiate school of dancing were studied through interview using a highly structured questionnaire to elicit details of the duration and intensity of dance training, menstrual patterns and musculoskeletal injuries sustained during training; 70 (72%) of these dancing students were eumenorrhoeic, while 15 (15.4%) had oligomenorrhoea. Thirteen (13.4%) either had amenorrhoea for over 90 days at the time of the study, or were on hormonal treatment because of amenorrhoea for over 3 months in the past 1 year. Those who were amenorrhoeic had longer training hours per week when compared with eumenorrhoeic and oligomenorrhoeic students. Both oligomenorrhoeic and amenorrhoeic students had a lower body mass index (18.25 kg/m2 and 18.26 kg/m2 versus 19.45 kg/m2, p < 0.01), and a higher incidence of musculoskeletal injuries and chronic orthopaedic problems compared to eumenorrhoeic ones. Ballet students had a higher incidence of menstrual dysfunction and musculoskeletal injuries as compared to classic Chinese dance, modern dance and musical theatre dance students as well as a significantly lower average body mass index. These data suggest a proportional correlation between menstrual dysfunction and proneness to musculoskeletal injuries in training, which could be explained by a hormonal mechanism.

Adult↗

Relicts of dancing mania: the dancing procession of Echternach.

In the small town of Echternach in Luxembourg, remnants of chorea St. Vitii can be found every year when pilgrims gather at the grave of St. Willibrord (658-739) to take part in the so-called Dancing Procession on Whit Tuesday. Miracles and healings are reported to have taken place in front of Willibrord's sarcophagus in the late eighth century. News of the miraculous healings inspired the celebratory folkdances in Echternach. Willibrord became the patron saint of patients with movement disorders. Important annual pilgrimages to the grave of Saint Willibrord, with pilgrims from Gallic and Teutonic provinces, were reported around 1100. The Dancing Procession is first mentioned in the Echternach city archives in 1497. In 1900, Henri Meige, a neurologist with a special interest in movement disorders, visited Echternach to observe the annual Dancing Procession. Although Meige was disappointed with the lack of hysteria, he concluded that the Dancing Procession of Echternach was not without grandeur. Outbreaks of mass hysteria with a background of religious fervor, pagan traditions, or superstition are the most likely explanation for the medieval dancing mania. This view is supported by the religious motivation behind the present-day Dancing Procession in Echternach, a ritual with mixed pagan-Christian origins related to Saint Vitus' dance.

Bipolar Disorder↗

Physiological responses during aerobic dance of individuals grouped by aerobic capacity and dance experience.

This study examined the effects of aerobic capacity (peak oxygen uptake) and aerobic dance experience on the physiological responses to an aerobic dance routine. The heart rate (HR) and VO2 responses to three levels (intensities) of aerobic dance were measured in 27 women. Experienced aerobic dancers (AD) (mean peak VO2 = 42 ml.kg-1.min-1) were compared to subjects with limited aerobic dance experience of high (HI) (peak VO2 greater than 35 ml.kg-1.min-1) and low (LO) (peak VO2 less than 35 ml.kg-1.min-1) aerobic capacities. The results indicated the LO group exercised at a higher percentage of peak heart rate and peak VO2 at all three dance levels than did either the HI or AD groups (HI = AD). Design of aerobic dance routines must consider the exercise tolerance of the intended audience. In mixed groups, individuals with low aerobic capacities should be shown how and encouraged to modify the activity to reduce the level of exertion.

Adult↗

[The contribution of belly dance to body education, physical and mental health of women who go to the gym or dance].

This qualitative study aimed to examine the benefits of belly dance for the health of women who go to a gym in the interior of São Paulo state, Brazil and was based on the researchers' experience and other literature on dancing. The references were the experience of the researcher and other literature on the dance area. The sample consisted of 12 women from 16 to 40 years of age who practiced belly dance for more than three months, who received a questionnaire with open questions. The analysis of their answers demonstrated that belly dance is beneficial for an integral education that values life, improving these women's health and quality of life.

Adolescent↗

Profile of dance injuries in a Broadway show: a discussion of issues in dance medicine epidemiology.

A description of dance injuries in a Broadway show using ballet technique is reported for the first time. Presentation of this material is used as a vehicle to discuss issues in dance epidemiology and etiology. As interest and research in dance medicine increases, standardization of reporting methods and definitions becomes critical in discussions of epidemiology and etiology. Borrowing from sports medicine classifications, which define sports injury as "time lost from play," we suggest dance injury be defined as "time lost from performing". The overall injury rate was 40.0%, which was low compared with those of classical ballet companies. The majority of injuries involved the foot and ankle, similar to previous reports of classical ballet companies. Reasons for the low injury rates and types of injuries are discussed. The information necessary to facilitate comparison of data with other studies is outlined. We hope this article will contribute to further discussion regarding adoption of universal language and details necessary for reporting injury. Additional areas of research are suggested.

Adult↗

[Changes of peripheral blood parameters in aerobic dance instructors after aerobic dance instruction].

To investigate the biological load of aerobic dance instruction on the body, a blood biological study was performed on 13 female instructors. The values were compared with 10 female healthy controls. The results obtained were as follows. 1. A significant negative correlation was observed between the total experience of aerobic dancing (in years) and the levels of serum phospholipids. In addition, the numbers of white blood cells and the levels of serum phospholipids, lipoperoxide, uric acid and creatinine were significantly related to aerobic dance instruction time (years). 2. The levels of serum CPK, aldolase, GOT, BUN and creatinine in the aerobic dance instructors were significantly higher than those in the controls. 3. The levels of serum CPK, uric acid, BUN, creatinine and Ca increased significantly after an intermediate class lesson (about 60 minutes). In addition, the numbers of white blood cells also increased after the lesson, but not significantly. Moreover, Significant decreases of the mean corpuscular volume and serum Mg were observed after the lesson.

Adult↗

Drugs and the dance music scene: a survey of current drug use patterns among a sample of dance music enthusiasts in the UK.

This study explores the utility of a self-completion survey method to quickly and cheaply generate information on patterns and trends among regular "recreational" drug consumers. Data is reported here from 1151 subjects accessed through a dance music publication. In keeping with previous studies of drug use within the dance scene polysubstance use was the norm. Many of those reporting use of "ecstasy" were regularly using multiple tablets often consumed in combination with other substances thus exposing themselves to serious health risks, in particular the risk of dose related neurotoxic effects. Seventy percent were drinking alcohol at hazardous levels. Subjects' patterns of drug purchasing also put them at risk of severe criminal sanction. Data supported evidence that cocaine use had become increasing popular in the UK, but contrasted with some commentators' views that ecstasy use was in decline. The utility of this method and how the results should be interpreted is discussed, as are the data's implications for harm and risk reduction activities.

Adult↗

Dance screen programs and development of dance clinics.

Dance movements can be stressful to the body, and the required extreme positions may place physiologic structures at risk for acute, subacute, or chronic injury. The authors designed a screening program, conducted by a team of physical therapists, orthopedists, and dance instructors, to evaluate dancers for musculoskeletal problems and to make recommendations that would improve movement compensation, strength, endurance, and mobility.

Ankle↗

Honeybee waggle dance: recruitment success depends on the dance floor

The waggle dance of the honeybee Apis mellifera, used to recruit nestmates to a food source, takes place on the surface of the combs in the dark hive. The mechanism of information transfer between dancer and follower bees is not entirely understood. The results presented here reveal a novel factor that must be brought into any consideration of this mechanism, namely that the nature of the floor on which the bees dance has a considerable influence on the recruitment of nestmates to a food source. Dancers on combs with open empty cells recruit three times as many nestmates to a food source as dancers on capped brood cells.

Journal Article↗