Isokinetic strength profiles of thigh muscles of modern dancers in relation to their experience level
Medical Problems of Performing Artists, 2013•ingentaconnect.com
The aim of this study was to determine maximal voluntary peak torque (PT), PT% body
weight (PT% BW), total work (TW), and hamstring/quadriceps ratio (HQR) for bilateral and
unilateral thigh muscle strength during isokinetic muscle contractions in modern dancers in
relation to their experience level. METHODS: Twenty-two female dancers were divided into
two groups: intermediate dancers (ID, n= 11) and advanced dancers (AD, n= 11). Strength
tests were performed using the Biodex System-III Pro Multijoint System isokinetic …
weight (PT% BW), total work (TW), and hamstring/quadriceps ratio (HQR) for bilateral and
unilateral thigh muscle strength during isokinetic muscle contractions in modern dancers in
relation to their experience level. METHODS: Twenty-two female dancers were divided into
two groups: intermediate dancers (ID, n= 11) and advanced dancers (AD, n= 11). Strength
tests were performed using the Biodex System-III Pro Multijoint System isokinetic …
The aim of this study was to determine maximal voluntary peak torque (PT), PT% body weight (PT%BW), total work (TW), and hamstring/quadriceps ratio (HQR) for bilateral and unilateral thigh muscle strength during isokinetic muscle contractions in modern dancers in relation to their experience level.
METHODS
Twenty-two female dancers were divided into two groups: intermediate dancers (ID, n=11) and advanced dancers (AD, n=11). Strength tests were performed using the Biodex System-III Pro Multijoint System isokinetic dynamometer to determine three joint angular velocities (60, 180, 300°/s).
RESULTS
During extension, ADs exhibited higher ratios in the HQR (p=0.016) on right leg at 300°/s, IDs generated greater TW (p=0.042), and within groups, there was a significant left-to-right difference in the HQR at 300°/s for ADs (p=0.042). During flexion, within groups, the ADs exhibited significant differences between legs for both PT (p=0.026) and PT%BW (p=0.022) at 300°/s.
CONCLUSION
For both groups, the average HQR in all angular velocities was not within the recommended range, which is required to prevent injuries; at the same time, unilateral muscular imbalances existed. Lower extremities of ADs exhibited asymmetric strength patterns at a certain level. Further research should be done to confirm the findings of this pilot study.
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