Biopsychosocial Characteristics of Contemporary and Irish University-Level Student Dancers A Pilot Study.

In addition to the difficulties encountered by non-dancing university students, university-level dancers may encounter a range of challenges due to their status as aesthetic athletes. This pilot study compares the biopsychosocial characteristics of contemporary dance (CD) and Irish dance (ID) university students. CD (N = 30) and ID (N = 27) participants from institutions in Ireland and the United Kingdom were screened using a host of subjective and objective tools to establish baseline biopsychosocial characteristics. Participants also provided extensive information regarding their injury history over the previous year. The groups were compared using simple descriptive statistics, independent t-test or Mann Whitney U tests and chi-square tests as appropriate. CD participants danced for significantly more hours each week (p < 0.001) than the ID group, who spent significantly less time warming up (p < 0.001) and more time engaged in weekly non-dance-related physical activities (p = 0.022). CD participants performed significantly better that the ID group on the Star Excursion Balance Test (p = < 0.001), plank-hold (p = 0.004), and fitness test (p = 0.045). Substantial rates of injury were reported by both groups, with no significant difference in terms of number of injuries or days lost to injury (p > 0.05). Indications of a shared dancer mentality including ego-driven motivation, passion for dance, and lower mood were present and required vigilance on the part of teachers and coaches to mitigate possible negative physical and psychological consequences. Additionally, CD participants demonstrated higher levels of catastrophizing (p = 0.019) and reported significantly more subjective health complaints (p = 0.010) than the ID group.

Dance exposure, wellbeing and injury in collegiate Irish and contemporary dancers: A prospective study.

OBJECTIVES: Dance exposure and determinants of wellness in Irish dance (ID) and contemporary dance (CD) are under-investigated in pre-professional, collegiate cohorts. This study prospectively investigated these variables in ID and CD participants for one year. DESIGN: Prospective study. SETTING: University-level institutes of dance, United Kingdom (UK) and Ireland. PARTICIPANTS: Fifty (ID = 21, CD = 29) full time students of dance at Trinity Laban Conservatoire of Music and Dance, (UK) and the University of Limerick, Ireland. MAIN OUTCOME MEASURES: Weekly hours of dance, general health, sleep quality, injury defined as "any pain or injury that impacted upon their ability to dance". RESULTS: Dance exposure varied considerably for both genres across the year. CD participants danced for more hours weekly (p < 0.001). Overall injury incidence (time-loss and non-time-loss) was 10.6 and 8.4 injuries per 1000 h dancing for ID and CD groups respectively. 70.4% of injuries were non-time-loss. Better sleep (p = 0.007) and general health (p < 0.001) scores were negatively correlated with days lost/impacted by injury. CD participants reported a significantly higher dance exposure in the week prior to a time-loss injury than during the previous four weeks (p = 0.044). CONCLUSIONS: Dance exposure is erratic in these cohorts with dancers frequently performing when injured. Poor sleep, general health, and increased dance exposure may be associated with injury.

Energy intake and energy expenditure of pre-professional female contemporary dancers.

Many athletes in aesthetic and weight dependent sports are at risk of energy imbalance. However little is known about the exercise and eating behaviours of highly trained dance populations. This investigation sought to determine the energy intake and energy expenditure of pre-professional female contemporary dancers. Twenty-five female contemporary dance students completed the study. Over a 7-day period, including five week days (with scheduled dance training at a conservatoire) and two weekend days (with no scheduled dance training at the conservatoire), energy intake (self-reported weighed food diary and 24 h dietary recall) and expenditure (tri-axial accelerometry) were recorded. Mean daily energy intake and expenditure were different over the 7-day period (P = 0.014) equating to an energy deficit of -356 ± 668 kcal·day-1 (or -1.5 ± 2.8 MJ·day-1). Energy expenditure was not different when comparing week and weekend days (P = 0.297). However daily energy intake (P = 0.002), energy availability (P = 0.003), and energy balance (P = 0.004) were lower during the week compared to the weekend, where energy balance became positive. The percentage contribution of macronutrients to total energy intake also differed; with higher fat (P = 0.022) and alcohol (P = 0.020), and lower carbohydrate (P = 0.001) and a trend for lower protein (P = 0.051) at the weekend. Energy balance and appropriate macronutrient intake are essential for maintaining the demands of training, performance and recovery. Whilst aesthetics are important, female contemporary dancers may be at risk of the numerous health and performance impairments associated with negative energy balance, particularly during periods of scheduled training.

Assessment of Compensated Turnout Characteristics and their Relationship to Injuries in University Level Modern Dancers.

Dancers may compensate alignment at the spine, hip, knees, ankles, and feet to achieve a greater turnout than is available at the hip alone. Such compensations are believed to lead to many of the musculoskeletal injuries experienced by dancers, especially overuse injuries. The aim of this study was to explore the relationship between compensated turnout and injury of the lower extremities and low back. Twenty-two university level modern dancers age 19 to 23 participated. Measurements were taken of active hip external rotation (AHER) prone and functional turnout (FTO) in first position. The difference between FTO and AHER was designated as compensated turnout (CTO). A questionnaire was conducted to gather information about dancers' injuries within the past 2 years. A total of 17 participants (77%) reported experiencing at least one injury in the 24 month period. All dancers compensated turnout. Results revealed a large variability in CTO among participants, ranging from 3° to 72°. Statistical analysis showed a significant relationship (r = 0.45, N = 22, p = 0.04) between CTO and the number of injuries experienced, especially as related to low back pain (r = 0.50, N = 22, p = 0.02). Students with no injury had a CTO mean of 26°, while those with two or more injuries had a CTO mean of 43°. Results contribute to previous studies that have examined the effects of CTO in ballet dancers and further indicate that compensatory patterns of turnout may increase the risk of experiencing more than one injury in university level modern dancers.

The development of a high intensity dance performance fitness test.

While there is currently a validated dance-specific exercise method of measuring aerobic fitness, no such test has been developed to measure high intensity capabilities in dance. The purpose of this study was to initiate an intermittent high intensity dance-specific fitness test. The test was designed to be able to observe changes in heart rate (HR), thereby allowing for a measurement of physical fitness at high intensities. Sixteen professional dancers (4 males and 12 females) volunteered to take part in this study. The fitness test protocol consists of movements that are representative of contemporary dance, and contains exercise and rest periods that mimic the intermittent nature of dance. The participants performed four trials. The physiological variables measured were HR (b.min(-1)) for each one minute bout of the four minute test for all trials, oxygen uptake (VO(2)) throughout the test, and end blood lactate (BLa mmol.L) for each trial. In addition, five of the participants undertook a maximal oxygen uptake treadmill test, and the scores obtained were compared with those from the dance test. Results show HR consistency across each one minute bout of the test and across each of the four trials of testing for all participants, indicating that the test is reliable. There was good reliability between bouts of each trial (typical error as % of CV = 1.5), intraclass "r" = 0.8, and good reliability between the four trials (typical error as % of CV = 2.1), intraclass "r" = 0.82. There were no significant differences between the maximal VO(2) and BLa scores established in the treadmill and dance tests, demonstrating validity. Thus, the results of this study indicate that the high intensity dance-specific test is a reliable and valid means of assessing and monitoring the cardiovascular fitness of dancers. The test allows dancers to be assessed within an environment that they are accustomed to (the studio), using a mode of exercise that is relevant (dance), and it is of adequate intensity to be representative of performance.