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Method to Measure Tone of Axial and Proximal Muscle
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Laughing: a demanding exercise for trunk muscles.

Heiko Wagner1, Ulrich Rehmes, Daniel Kohle

  • 1a Motion Science , Westfälische Wilhelms-Universität , Münster , Germany.

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|November 20, 2013
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Summary

Laughter yoga significantly activates trunk muscles, particularly the internal oblique, comparable to traditional exercises. This study suggests laughter yoga positively impacts trunk muscle engagement for potential spine stability benefits.

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Area of Science:

  • Physiology
  • Kinesiology
  • Exercise Science

Background:

  • Laughter is known to increase demand on trunk muscles.
  • The specific impact of laughter yoga on trunk muscle activation compared to conventional exercises remains unclear.
  • Understanding trunk muscle engagement is crucial for core strength and spinal stability.

Purpose of the Study:

  • To quantify and compare trunk muscle activation during laughter yoga versus traditional exercises (crunches, back lifts).
  • To investigate the role of laughter yoga in enhancing trunk muscle activity.

Main Methods:

  • Surface electromyography (sEMG) was used to measure the activity of five key trunk muscles.
  • Muscle activation levels were recorded during laughter yoga sessions and compared to crunch and back lifting exercises.

Main Results:

  • Laughter yoga demonstrated higher activation of the internal oblique muscle compared to traditional exercises.
  • Multifidus, erector spinae, and rectus abdominis muscles showed approximately half the activation during laughter yoga.
  • External oblique muscle activation was comparable between laughter yoga and the control exercises.

Conclusions:

  • Laughter yoga positively influences trunk muscle activation, suggesting it can be a beneficial exercise for core engagement.
  • Further research is needed to determine if laughter yoga can improve neuromuscular recruitment for enhanced spine stability.