None listed
Conditions
Brief summary
Background and purpose of the study. Dance is a unique combination of athleticism and artistry which exposes dancers to extreme physical demands and risks of injuries. Previous studies reported an injury incidence of 17% to 94% in various levels of dancers. The injury patterns reported in the literature involves the highest incidence of 40% in the lower leg, foot and ankle and the mechanisms of the dance-related musculoskeletal injuries were reported as multifactorial. Despite the extensive research on the topic of dancers’ foot and ankle injuries, no consensus has been reached regarding the risk factors, and effect of injuries on the neuromuscular characteristics; and limited evidence was available for an effective prevention and training program for dancers with foot and ankle injuries. Therefore, we conducted this study firstly, to assess and compare the neuromuscular performance and morphology of the lower extremity, and compare the functional movement screening (FMS) score between young pre-professional dancers with and without ankle and foot injuries (discriminant validity of the FMS); and secondly, to determine if FMS score combined with other factors could predict the incidence and severity of dancers’ ankle and foot injuries; and thirdly, to examine the effect of FMS-based training program on the neuromuscular performance, FMS score, and the incidence and severity of dancers’ ankle and foot injuries. Research design and method. we recruited 80 young pre-professional dancers (between 15 and 25 years old) from Taipei area to compare the FMSTM score, lower extremity muscle strength and the neuromuscular performance (muscle activation pattern) of the lower extremity muscles in young pre-professional dancers with and without previous (within one year) foot and ankle injuries. The muscle activation patterns of the gluteus maximus, gluteus medius, quadriceps, hamstrings, tibialis anterior, soleus, and fibularis longus will be assessed using TeleMyo 2400 G2 Telemetry Electromyography System. FMSTM score was assessed using the following seven movements: deep squat, hurdle step, in-line lunge, shoulder mobility, active straight leg raise, trunk stability push-up, rotatory stability. Significance of the study. Findings of this investigation provide valuable information for the understanding of the risk factors associated with foot and ankle dance injuries and the effect of injuries on the neuromuscular control and morphology of the lower extremity, and help to clarify the role of FMSTM on the injury prevention and training in young dancers. The data from this investigation give clinicians, educators, trainers, and researchers excellent basis for the professional dance training, dance injury care, and further research in this field of study, and help to prevent or decrease dance injury and associated loss of young talent.
Interventions
All dancers will receive the following assessment:
Strength and flexibility characteristics: all participants will be examined by a licensed physical therapist, and the following data will be measured: range of motion of the hip, knee and ankle joints, strength and flexibility of the major muscles of the lower extremity .
Functional movement screening (FMS) TM: all participants will perform seven FMS tasks, instructed by a FMS-trained, licensed physical therapist, and be videotaped for scoring.
All dancers will receive the following assessment: Strength and flexibility characteristics: all participants will be examined by a licensed physical therapist, and the following data will be measured: range of motion of the hip, knee and ankle joints, strength and flexibility of the major muscles of the lower extremity . Functional movement screening (FMS) TM: all participants will perform seven FMS tasks, instructed by a FMS-trained, licensed physical therapist, and be videotaped for scoring. The seven movement tasks are: deep squat, hurdle step, in-line lunge, shoulder mobility, active straight leg raise, trunk stability push-up, rotatory stability. Neuromuscular control characteristics: the neuromuscular control characteristics of the foot and ankle complex are evaluated by: Muscle activation pattern of the lower extremity during the FMS tasks. The muscle activity of the lower extremity major muscles will be assessed using an 8-channel FM/FM Telemetric electromyography (EMG) system (Telemyo 900, Noraxon USA, Inc., AZ, USA) during the FMS tasks (deep squat, hurdle step, in-line lunge). Morphology of the joints of the lower extremity: the orientation of the femoral neck, the relative alignment of the tibia and fibula, and the relative alignment of the talus, calcaneus, navicular, and cuboid bones will be assessed using three-dimensional magnetic resonance imaging (3D-MRI). This item will be assessed in the second year. All assessments are carried out during a single 3 hour session In the second year, subjects in the injured group were then randomized to either the FMS-based training group or the control group and received FMS-based training and traditional physical therapy for 4 weeks. The FMS-based training involved squat, hip motor control movements (included training of hip abductor stabilizers, hip adductor stabilizers and hip extensor stabilizers.). The training duration of the intervention was one-on-one face-to-face 1 hour per week for 4 weeks. The intensity of the training program was 10 in a 20-point Borf PRE. And all training program was administered by licensed physical therapist. We checked the situation of intervention by participant diary.
Sponsors
Yi-fen Shih
Study design
Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject)
Eligibility
Sex/Gender
All
Age
15 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
The inclusion criteria for injured group include: 1) experienced ankle sprain or injury within a year; 2)age between 15 and 25 years old; 3)major in dance. The inclusion criteria for un-injured groups include: 1)age between 15 and 25 years old; 2)major in dance.
Exclusion criteria
The exclusion criteria for both injured and un-injured groups include lower extremity and lower back injury within 6 week.
Outcome results
None listed