The relationship between EMG and change in thickness of transversus abdominis.
نویسندگان
چکیده
OBJECTIVE To investigate the relationship between changes in thickness and EMG activity in the transversus abdominis muscle of healthy subjects and the reliability of ultrasound measurements using different modes and transducers. DESIGN Convenience sampling. BACKGROUND Chronic low back pain is associated with transversus abdominis dysfunction but EMG studies of this muscle are restricted to invasive techniques. Since the thickness of transversus abdominis changes with activity, such changes measured from ultrasound images might provide insight into this muscle's function non-invasively. In addition, little is known about the comparability of ultrasound measurements from different modes and transducers, nor the reliability of transversus abdominis measurements. METHODS In 9 healthy subjects (aged 29-52 years, four male) transversus abdominis was studied at rest and during activity (5-80% max) with simultaneous EMG and ultrasound (M mode, 5 MHz curvilinear transducer) measurements. Intra-rater reliability for thickness measurements was studied on 13 subjects using 7.5 MHz linear and 5 MHz curvilinear transducers in B and M modes. RESULTS Muscle thickness changes correlated well with EMG activity (P < 0.001, R2 = 0.87) and there were no significant differences between subjects (P > 0.05). Using 7.5 MHz head, the ICC for B mode was 0.989 and for M mode was 0.981 for between days reliability. The ICC for between transducer reliability was 0.817. CONCLUSIONS Changes in thickness of transversus abdominis can be used to indicate changes in the electrical activity in this muscle. RELEVANCE Ultrasound scanning can be used in the clinical setting to provide objective information about transversus abdominis function.
منابع مشابه
رابطه فعالیت الکترومیوگرافی و تغییر ضخامت عضلات دیواره ی طرفی شکم در حین انقباض عضلات کف لگن در زنان سالم
Objective: To asses relationship between abdominal muscles superficial Electromyography (EMG) and ultrasound measurement during Pelvic Floor Muscles (PFM) contraction in healthy people. Methods: 15 healthy women participated in the study. Their abdominal muscles activation (transversus abdominis, internal oblique and external oblique muscles) was measured by EMG and sonography during maximal ...
متن کاملThe effect of isometric contractions of upper and lower limb muscles on the ultrasonic thickness of the transversus abdominis muscle
Background: The transverse abdominis (TrA) muscle is one of the most important muscles that contribute to the stability of the lumbar spine. Strengthening of trunk muscles that have a significant role in trunk stability is very important in the field of professional sport, sport medicine and rehabilitation of patient with low back pain (LBP). Identifying the exercises that can improve the stren...
متن کاملRelationship between the phases of the menstrual cycle and the transversus abdominis muscle
[Purpose] This study investigated changes in the thickness of the transversus abdominis muscle at various stages of the menstrual cycle. [Subjects] The subjects were 15 young healthy females with regular menstrual cycles. [Methods] A regular menstrual cycle was defined as a 28-day cycle comprising 3 phases: the menstrual phase, the follicular phase, and the luteal phase. For the purpose of the ...
متن کاملErgonomic Evaluation of Relationship between Electromyographic Activity in Selected Trunk Muscles and Back Discomfort While Working with a Laptop in a Sitting Position
Introduction: Low back pain is one of the most common musculoskeletal disorders leading to disability around the world. Several studies have suggested that prolonged computer/ laptop work contributes to the development of low back pain and discomfort. The results of the studies conducted on the association of back discomfort and muscle activity are contradictory. Thus, the present study aims to...
متن کاملTransabdominal Ultrasound Measurement of Pelvic Floor Muscle Activity When Activated via a Transversus Abdominis Muscle
Aims of Study This study aimed to investigate the relationship of pelvic floor muscle and transversus abdominis (TA) muscle activity during a pelvic floor (PF) muscle contraction. Sapsford et al (1) investigated this relationship using EMG and found there to be consistent co-contraction between these two muscles. Due to this finding, it has been hypothesised that the pelvic floor muscles can be...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Clinical biomechanics
دوره 19 4 شماره
صفحات -
تاریخ انتشار 2004