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Breathing Exercise Called the Maximal Abdominal Contraction Maneuver.

Jung Won Kwon1, Seo Yoon Park2, Ki Hyun Baek2

  • 1Department of Physical Therapy, College of Health Sciences, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam 330-714, Korea.

Medicina (Kaunas, Lithuania)
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PubMed
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The maximal abdominal contraction maneuver (MACM) significantly increases abdominal muscle thickness, particularly the transverse abdominis and rectus abdominis. This suggests MACM is a more effective exercise for enhancing spinal stability compared to maximal expiration.

Keywords:
abdominal musclebreathing exerciseco-contractioncore muscleultrasound images

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Area of Science:

  • Physiology
  • Biomechanics
  • Exercise Science

Background:

  • The maximal abdominal contraction maneuver (MACM) is a breathing exercise aimed at improving spinal joint stability.
  • Previous research has not definitively compared MACM's effectiveness against maximal expiration for enhancing spinal stability.
  • Understanding abdominal muscle responses to MACM is crucial for optimizing its application.

Purpose of the Study:

  • To investigate the changes in whole abdominal muscle thickness following the maximal abdominal contraction maneuver (MACM).
  • To compare the effectiveness of MACM against a maximal expiration task in altering abdominal muscle thickness.
  • To provide insights into the co-contraction mechanisms underlying spinal stability during these exercises.

Main Methods:

  • Thirty healthy participants (17 males, 13 females) were recruited for the study.
  • Ultrasound imaging was used to measure the thickness changes of the transverse abdominis (TrA), internal oblique (IO), external oblique (EO), and rectus abdominis (RA).
  • An experimental comparison was performed between the MACM and a maximal expiration task.

Main Results:

  • The maximal abdominal contraction maneuver (MACM) induced significantly greater increases in the thickness of the transverse abdominis (TrA) and rectus abdominis (RA) compared to maximal expiration.
  • These findings were statistically significant (p < 0.05).

Conclusions:

  • The maximal abdominal contraction maneuver (MACM) demonstrates superior efficacy over maximal expiration in increasing abdominal muscle thickness.
  • MACM appears to be a more effective exercise for enhancing spinal stability, particularly from a co-contraction standpoint.
  • These results support the use of MACM for improving core stability and potentially preventing spinal injuries.