specialty journal of sport sciences
Intrarater Reliability of Rehabilitative Ultrasound Imaging of the Gluteus Maximus, Lumbar Multifidus and Transversus Abdominis Muscles in Healthy Subjects
Shideh Narouei, Amir hossein Barati, Mohammad hossein Alizadeh, Asghar Akbari, Fateme Ghiasi
Objectives: To evaluate intrarater reliability of Rehabilitative Ultrasound Imaging in obtaining thickness measurements of the gluteus maximus , Transversus abdominis and lumbar multifidus muscles at rest and during contractions.
Design: Single-group repeated-measures reliability study.
Setting: University and orthopedic physical therapy clinic.
Participants: healthy subjects (N = 5).
Interventions: Not applicable.
Main Outcome Measures: Thickness measurements of the Gmax, TrA and lumbar MF muscles at rest and during contractions were obtained by using RUSI during 2 sessions within a day. Percent thickness change was calculated as thickness contracted – thickness rest / thickness rest × 100.
Intraclass correlation coefficients (ICC) were used to estimate reliability.
Results: Intraexaminer reliability point estimates (ICC) ranged from 0.57 to 0.96. Reliability estimates were lower for percent thickness change measures than the corresponding single thickness measures for all conditions.
Conclusions: RUSI Thickness and thickness percent change measurement of Gmax, MF and Tra is adequately reliable.