Abstract
Background: The researchers and clinicians are emphasizing on function of Transverse Abdominis (TrA) which is a deepest abdominal muscles because there is an evidence that TrA is recruited independently of the other abdominal muscles in many different tasks and plays an important role in lumbar stability.
 Aim: The purpose of this study was to assess the relationship between TrA muscle strength and lumbar lordosis in young adults.
 Methods: Total 394 subjects were recruited from the constituent institutions of Sumandeep Vidyapeeth with the age range 18-35years. All the subjects, Lumbar lordosis angle and their TrA strength were measured with the Flexicurve and Pressure Biofeedback Unit respectively. Lumbar lordosis angle was calculated using established formula. Average of 03 trials was considered for TrA strength.
 Results: Pearson correlation coefficient was -0.18 on correlating Lumbar lordosis angle with TrA strength, -0.09 for age with TrA strength and 0.11 for age with lumbar lordosis angle.
 Conclusion: This study concludes that there is negative relationship between lumbar lordosis and TrA i.e. as the lumbar lordosis angle increases, the strength of TrA muscle decreases.
Highlights
The upper body is supported by the lumbar spine and it acts as a bridge to transmit the weight from the upper body to the pelvis and lower limbs
All the abdominal muscles play an important role in spinal and pelvis control, Transverse Abdominis muscle has proven its independent role than the other trunk muscles in controlling the spine and its activation is related with the postural demands.7This fact is supported by the study [14] which suggested that Transverse abdominis muscle is to be exercised to increase its muscle mass in order to improve lumbar stability and balance
Comparison of lumbar lordosis angle and Transverse abdominis muscle strength, we found that those subjects who were having good Transverse Abdominis (TrA) muscle strength had normal Lumbar lordosis (LL) angle i.e. females ranged in 420±150 and males ranged in 320±100
Summary
The upper body is supported by the lumbar spine and it acts as a bridge to transmit the weight from the upper body to the pelvis and lower limbs. Lumbar lordotic curve and pelvic inclination angles in a standing position as per theory should be affected by the lengths of lumbar erector spinae and abdominal muscles. In a normal standing posture, pelvic inclination angle is related to the lumbar curve, and these angles are related to the strength and length of the abdominal and back muscles [4]. Aim: The purpose of this study was to assess the relationship between TrA muscle strength and lumbar lordosis in young adults. Lumbar lordosis angle and their TrA strength were measured with the Flexicurve and Pressure Biofeedback Unit respectively. Conclusion: This study concludes that there is negative relationship between lumbar lordosis and TrA i.e. as the lumbar lordosis angle increases, the strength of TrA muscle decreases
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