A Study on Influence of Yoga Practice on Segmental Trunk Control Using 3D Kinematic Evaluation Method.

Area of Science:

• Biomechanics and Motor Control
• Neuroscience
• Exercise Physiology

Background:

• Segmental trunk control is crucial for upright posture, stability, and daily activities.
• Its role in postural control is not fully understood due to limited measurement.
• Yoga is known to improve postural control, but its effect on segmental trunk control is unexplored.

Purpose of the Study:

• To investigate the influence of regular yoga practice on segmental trunk control.
• To compare segmental trunk control in advanced yoga practitioners versus healthy adults.
• To utilize 3D kinematic evaluation for assessing trunk motion.

Main Methods:

• Ten advanced yoga practitioners (>5 years) and ten age-matched healthy adults participated.
• Segmental trunk control was quantified as trunk motion relative to the pelvis.
• Motion was calculated using sternum and pelvic marker displacement in sagittal and frontal planes.

Main Results:

• Yoga practitioners exhibited significantly less marker displacement variability (sternum, pelvis, ankle) compared to controls (p < 0.001).
• Advanced yoga practitioners demonstrated significantly greater segmental trunk control.
• Segmental trunk motion in the frontal plane was 50% lower in yoga practitioners (p < 0.001).

Conclusions:

• Regular yoga practice positively influences segmental trunk control and reduces body sway, enhancing overall postural control.
• Yoga may offer therapeutic potential for individuals with impaired trunk-pelvic dissociation, such as those with Parkinson's disease, stroke, or cerebral palsy.
• Yoga practice can be recommended for improving trunk segmental control in various balance and neuro-musculoskeletal disorders.