Correlation Analysis of Craniovertebral Angle and Scapular Index with Muscle Tone, Pulmonary Function, Balance...

Area of Science:

• Biomechanics
• Physiology
• Musculoskeletal Health

Background:

• Forward head posture and altered scapular alignment are linked to musculoskeletal issues and reduced physical performance.
• The specific relationship between postural alignment and physiological function in young adults is not well understood.

Purpose of the Study:

• To investigate the association between postural alignment indices (craniovertebral angle and scapular index) and physiological functions (muscle tone, pulmonary function, balance, and cervical proprioception) in healthy young adults.

Main Methods:

• Fifty-four healthy young adults were assessed for postural alignment using the craniovertebral angle (CVA) and scapular index.
• Muscle tone, pulmonary function (FVC, FEV1/FVC), balance control, and cervical proprioception (joint position error) were measured using specialized devices and tests.

Main Results:

• A higher CVA was weakly correlated with lower upper trapezius muscle tone, better weight distribution, improved cervical flexion accuracy, and higher forced vital capacity (FVC).
• An improved scapular index correlated positively with FEV1/FVC and negatively with balance control.
• Overall, better postural alignment was associated with reduced muscle tone, enhanced pulmonary function, superior balance, and more accurate cervical proprioception.

Conclusions:

• Improved craniovertebral angle and scapular index are associated with better physiological function in young adults.
• These findings highlight the importance of postural alignment for overall health and performance in this demographic.