Altered Patterns Of Abdominal Muscle Activation In Patients Cvk
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4 m/s make up abdominal m/s anatomy(i) rectus abdominis (ii) external oblique (iii) internal oblique (iv) transverse abdominis
Origin- arises by 2 tendinous heads
Lateral head from the lateral part of pubic crest. Medial head from the anterior pubic lig.
Insertion- on the front of wall of thorax. When fully developed, the rectus abdominis is the most prominent ab muscle. Makes up 6 packs
Origin-arises by 8 fleshy slips from the middle of the shaft of the lower 8 ribs. They run downwards, forwards and medially. Insertion- they end in a broad aponeurosis through which they are inserted from above downwards into the xephoid process, the linea alba, pubic symphysis,pubic crest and the pectineal line of pubis. The lower fibers are directly inserted into the anterior 2/3rds of the outer lip of the iliac crest.
Origin- arises fromLateral 2/3rds of the inguinal ligament. Anterior 2/3rds of the intermediate area of the iliac crest, and The thoracolumbar fascia.
InsertionUppermost fibers directly into the lower 3 or 4 ribs and their cartilages. Greater part of the m/s ends in an aponeurosis through which it is inserted into the 7th,8th & 9th costal cartilages, linea alba, the pubic crest & the pectineal line of the pubis.
Origin
Lateral 1/3rd of the inguinal ligament. The anterior 2/3rd of the inner lip of iliac crest. The thoracolumbar fascia. The inner surfaces of the lower 6 costal cartilages. Fibres are directed horizontally forwards.
Insertion- fibres end in a broad aponeurosis which is inserted into the xiphoid process,the linea alba, pubic crest, and pectineal line of the pubis
This study investigated patterns of abdominal m/s recruitment during abdominal drawing in manoeuvre in subjects with CLBP. Data were collected from 12 physically active subjects with CLBP and 10 controls.
12 subjects with CLBP selected on the basis that they were physically active & carried out a minimum of three 30-mins aerobic activity sessions per week. Inclusion criteria-recurrent symptoms which persisted longer than 3 months and attributed only to diagnosed spondylolysis or spondylisthesis.
10 Physically active subjects with similar age to that of the subjects of CLBP group. Inclusion criteria- they participated in regular aerobic activity. Exclusion criteria- if they had any hx of back pain in the preceding 6 months.
Activity of IO and upper RA m/s was measured unilaterally using SEMG Analysis of SEMG data was carried out during the abdominal drawing-in maneuver it is seen that normal population is able to preferentially activate the deep abdominals with minimal activation of RA Each subject was positioned in crook lying and a bio-feedback monitor was placed under the lumbar lordosis between S1 and L1 with another beneath the subjects feet
Each subject was instructed to contract their deep abdominal m/s by drawing their naval up towards their head and in towards their spine so as to hollow the abdomen Then the electrode was placed 2cm apart over the upper RA m/s and over the right IO. An earth electrode was placed over the acromian process
Each perform three trails. For each trail they gained a pressure rise of 10mm Hg for 10sec. The last 3sec of each trail was recorded. From this ratio of activation of IO relative to RA was calculated (IO/RA) Non parametric statistical analysis was performed on the data.
The control group showed a significantly greater level of activation in the IO compared with upper RA during the abdominal maneuver
The results indicates that subjects with CLBP were unable to preferentially activate IO without significant activation of upper RA during the maneuver This findings support the claims made by the clinicians that the presence of CLBP is often associated with change in the pattern of abdominal activation It also represents the presence of neuromuscular dysfunction of the abdominal musculature in this specific CLBP population
4 m/s make up abdominal m/s anatomy(i) rectus abdominis (ii) external oblique (iii) internal oblique (iv) transverse abdominis
Origin- arises by 2 tendinous heads
Lateral head from the lateral part of pubic crest. Medial head from the anterior pubic lig.
Insertion- on the front of wall of thorax. When fully developed, the rectus abdominis is the most prominent ab muscle. Makes up 6 packs
Origin-arises by 8 fleshy slips from the middle of the shaft of the lower 8 ribs. They run downwards, forwards and medially. Insertion- they end in a broad aponeurosis through which they are inserted from above downwards into the xephoid process, the linea alba, pubic symphysis,pubic crest and the pectineal line of pubis. The lower fibers are directly inserted into the anterior 2/3rds of the outer lip of the iliac crest.
Origin- arises fromLateral 2/3rds of the inguinal ligament. Anterior 2/3rds of the intermediate area of the iliac crest, and The thoracolumbar fascia.
InsertionUppermost fibers directly into the lower 3 or 4 ribs and their cartilages. Greater part of the m/s ends in an aponeurosis through which it is inserted into the 7th,8th & 9th costal cartilages, linea alba, the pubic crest & the pectineal line of the pubis.
Origin
Lateral 1/3rd of the inguinal ligament. The anterior 2/3rd of the inner lip of iliac crest. The thoracolumbar fascia. The inner surfaces of the lower 6 costal cartilages. Fibres are directed horizontally forwards.
Insertion- fibres end in a broad aponeurosis which is inserted into the xiphoid process,the linea alba, pubic crest, and pectineal line of the pubis
This study investigated patterns of abdominal m/s recruitment during abdominal drawing in manoeuvre in subjects with CLBP. Data were collected from 12 physically active subjects with CLBP and 10 controls.
12 subjects with CLBP selected on the basis that they were physically active & carried out a minimum of three 30-mins aerobic activity sessions per week. Inclusion criteria-recurrent symptoms which persisted longer than 3 months and attributed only to diagnosed spondylolysis or spondylisthesis.
10 Physically active subjects with similar age to that of the subjects of CLBP group. Inclusion criteria- they participated in regular aerobic activity. Exclusion criteria- if they had any hx of back pain in the preceding 6 months.
Activity of IO and upper RA m/s was measured unilaterally using SEMG Analysis of SEMG data was carried out during the abdominal drawing-in maneuver it is seen that normal population is able to preferentially activate the deep abdominals with minimal activation of RA Each subject was positioned in crook lying and a bio-feedback monitor was placed under the lumbar lordosis between S1 and L1 with another beneath the subjects feet
Each subject was instructed to contract their deep abdominal m/s by drawing their naval up towards their head and in towards their spine so as to hollow the abdomen Then the electrode was placed 2cm apart over the upper RA m/s and over the right IO. An earth electrode was placed over the acromian process
Each perform three trails. For each trail they gained a pressure rise of 10mm Hg for 10sec. The last 3sec of each trail was recorded. From this ratio of activation of IO relative to RA was calculated (IO/RA) Non parametric statistical analysis was performed on the data.
The control group showed a significantly greater level of activation in the IO compared with upper RA during the abdominal maneuver
The results indicates that subjects with CLBP were unable to preferentially activate IO without significant activation of upper RA during the maneuver This findings support the claims made by the clinicians that the presence of CLBP is often associated with change in the pattern of abdominal activation It also represents the presence of neuromuscular dysfunction of the abdominal musculature in this specific CLBP population
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