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Phys. Ther. Korea 2024; 31(3): 198-204

Published online December 20, 2024

https://doi.org/10.12674/ptk.2024.31.3.198

© Korean Research Society of Physical Therapy

The Effect of Scapula Supporting Pillow on Pulmonary Function and Postural Changes in Individuals With Thoracic Kyphosis

Woosuk Lim1,2 , PT, BPT, Ilyoung Moon3 , PT, PhD, Wookyung Sung4 , PT, MSc, Chung-hwi Yi5 , PT, PhD

1Department of Physical Therapy, The Graduate School, Yonsei University, Wonju, 2Department of Rehabilitation Medicine, Seoul Metropolitan Seonam General Hospital, Seoul, 3Department of Rehabilitation Medicine, Wonju Severance Christian Hospital, Wonju, 4Department of Physical Therapy, Gangnam YK Hospital, Seoul, 5Department of Physical Therapy, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea

Correspondence to: Chung-hwi Yi
E-mail: pteagle@yonsei.ac.kr
https://orcid.org/0000-0003-2554-8083

Received: September 2, 2024; Revised: September 9, 2024; Accepted: September 11, 2024

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background: The widespread use of smartphones and personal computers has contributed to a rise in thoracic kyphosis, a condition characterized by excessive outward curvature of the upper back. This condition can lead to reduced lung function, poor posture, and decreased spinal angles, all of which can cause reductions in forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1). Furthermore, these issues are often associated with scapular protraction and anterior tilting.
Objects: This study aimed to investigate the effects of using a scapular support pillow in people with thoracic kyphosis, as well as determine the changes in respiratory capacity and postural alignment.
Methods: Forty-one participants (25 males and 16 females) with thoracic kyphosis (Cobb angle > 40°) were included in the study. Their respiratory function (FVC, FEV1) and body posture (spinal angle, chest expansion, acromion-to-the-wall index) were measured before and after using the scapular support pillow for approximately 30 minutes. FVC, FEV1, spinal angle, chest expansion, and acromion-to-the-wall index were analyzed using paired-t test. The level of statistical significance was set at p < 0.05.
Results: The results demonstrated significant improvements in all measured parameters. Both respiratory function and posture-related metrics showed notable increases after using the scapular support pillow.
Conclusion: The use of a scapular support pillow can effectively improve respiratory function and postural alignment in patients with thoracic kyphosis. Our research makes a meaningful contribution by proposing an effortless and convenient treatment option for individuals with thoracic kyphosis.

Keywords: Ergonomics, Kyphosis, Musculoskeletal abnormalities, Respiratory function test, Scapula supporting pillow

Article

Original Article

Phys. Ther. Korea 2024; 31(3): 198-204

Published online December 20, 2024 https://doi.org/10.12674/ptk.2024.31.3.198

Copyright © Korean Research Society of Physical Therapy.

The Effect of Scapula Supporting Pillow on Pulmonary Function and Postural Changes in Individuals With Thoracic Kyphosis

Woosuk Lim1,2 , PT, BPT, Ilyoung Moon3 , PT, PhD, Wookyung Sung4 , PT, MSc, Chung-hwi Yi5 , PT, PhD

1Department of Physical Therapy, The Graduate School, Yonsei University, Wonju, 2Department of Rehabilitation Medicine, Seoul Metropolitan Seonam General Hospital, Seoul, 3Department of Rehabilitation Medicine, Wonju Severance Christian Hospital, Wonju, 4Department of Physical Therapy, Gangnam YK Hospital, Seoul, 5Department of Physical Therapy, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea

Correspondence to:Chung-hwi Yi
E-mail: pteagle@yonsei.ac.kr
https://orcid.org/0000-0003-2554-8083

Received: September 2, 2024; Revised: September 9, 2024; Accepted: September 11, 2024

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background: The widespread use of smartphones and personal computers has contributed to a rise in thoracic kyphosis, a condition characterized by excessive outward curvature of the upper back. This condition can lead to reduced lung function, poor posture, and decreased spinal angles, all of which can cause reductions in forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1). Furthermore, these issues are often associated with scapular protraction and anterior tilting.
Objects: This study aimed to investigate the effects of using a scapular support pillow in people with thoracic kyphosis, as well as determine the changes in respiratory capacity and postural alignment.
Methods: Forty-one participants (25 males and 16 females) with thoracic kyphosis (Cobb angle > 40°) were included in the study. Their respiratory function (FVC, FEV1) and body posture (spinal angle, chest expansion, acromion-to-the-wall index) were measured before and after using the scapular support pillow for approximately 30 minutes. FVC, FEV1, spinal angle, chest expansion, and acromion-to-the-wall index were analyzed using paired-t test. The level of statistical significance was set at p < 0.05.
Results: The results demonstrated significant improvements in all measured parameters. Both respiratory function and posture-related metrics showed notable increases after using the scapular support pillow.
Conclusion: The use of a scapular support pillow can effectively improve respiratory function and postural alignment in patients with thoracic kyphosis. Our research makes a meaningful contribution by proposing an effortless and convenient treatment option for individuals with thoracic kyphosis.

Keywords: Ergonomics, Kyphosis, Musculoskeletal abnormalities, Respiratory function test, Scapula supporting pillow

Fig 1.

Figure 1.Acromion wall index.
Physical Therapy Korea 2024; 31: 198-204https://doi.org/10.12674/ptk.2024.31.3.198

Fig 2.

Figure 2.Chest expansion measurement. Revised from the article of Debouche et al. (J Manipulative Physiol Ther 2016;39:443-9) [19].
Physical Therapy Korea 2024; 31: 198-204https://doi.org/10.12674/ptk.2024.31.3.198

Fig 3.

Figure 3.Respiratory function test. Portable spirometer (One flow FVC spirometer; Clement Clarke International Ltd.). Revised from the article of Celli et al. (N Engl J Med 2004;350:1005-12) [15].
Physical Therapy Korea 2024; 31: 198-204https://doi.org/10.12674/ptk.2024.31.3.198

Fig 4.

Figure 4.(A) Scapular support pillow, (B) image of a participant lying supine on the scapular support pillow.
Physical Therapy Korea 2024; 31: 198-204https://doi.org/10.12674/ptk.2024.31.3.198

Table 1 . General characteristics of the study participants (N = 41).

VariableValue
Sex (male/female)25/16
Age (y)47.3 ± 14.7
Height (cm)168.1 ± 8.0
Weight (kg)68.2 ± 10.2
Body mass index (kg/m2)24.1 ± 2.8

Values are presented as number or mean ± standard deviation..


Table 2 . Measurements of respiratory function before and after using the scapular support pillow.

BeforeAftertp-value
FVC (L)3.19 ± 1.133.60 ± 1.17–9.471< 0.001
FEV1 (L)2.31 ± 0.972.87 ± 0.99–10.949< 0.001
FEV1/FVC (%)0.72 ± 0.110.80 ± 0.04–5.665< 0.001

Values are presented as mean ± standard deviation. FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second..


Table 3 . Measurements of posture before and after using the scapular support pillow.

BeforeAftertp-value
Spinal angle (°)43.22 ± 2.6738.73 ± 3.74–14.691< 0.001
Chest expansion (cm)2.49 ± 1.074.49 ± 1.5612.246< 0.001
AWI (cm)9.97 ± 1.258.43 ± 1.6410.714< 0.001

Values are presented as mean ± standard deviation. AWI, acromion-wall index..