Comparison of Immediate Effects of Three Types of Static Self-Stretching on Pectoralis Minor Length and Round Shoulder Posture Angle in Young Adult Females

Authors

  • Sumarttra Sungkue
  • Chatdao Septham
  • Ukkaradate Kongkam

Keywords:

Stretching, Pectoralis minor muscle, Round shoulder posture

Abstract

Round shoulder posture is one of the most common postural disorders. The tightness of pectoralis minor muscle is a factor associated with postural abnormalities. Furthermore, the inflexibility of pectoralis minor muscle may be the main cause of scapular dyskinesis and may lead to shoulder impingement. Stretching of pectoralis minor is one method to increase the muscle length. However, the pectoralis minor muscle stretch has several methods. The study aimed to compare the immediate effects of three static self-stretching methods on pectoralis minor muscle length and round shoulder posture angle. 17 female subjects aged between 18-30 years measured were recruited. Their measured pectoral muscle length and round shoulder posture angle were before stretching the pectoralis minor muscles by themselves. After that, the participants were randomly selected to stretch theirpectoralis minor muscle 1 way per day using 3 methods for 3 consecutive days, which includes active scapular retraction stretching (ASR), unilateral corner stretching (UC) and low load prolong stretching (LLP) methods. Finally, the length of their pectoralis minor muscle and the angle of round shoulders were measured immediately after the stretch. The data obtained were statistically calculated using Paired ttest to compare pectoralis minor length index and round shoulders posture angle between pre- and post-test in all three groups and one way ANOVA to determine the differences between the three methods of stretching muscles using the post - hoc analysis statistics. The result showed that the three static self-stretching methods could increase pectoralis minor muscle length and decrease round shoulder posture angle. However, it was found that LLP method increased the pectoralis minor muscle length and decreased the round shoulders posture angle statically significant greater than UC method and ASP method. (p<0.05) Therefore, the stretching method can be appliedto people with round shoulders posture or people with the tightness of pectoralis minor muscle to increase muscle length, decrease scapular dyskinesis and mayreduce the risk of subacromial impingement.

Downloads

Download data is not yet available.

References

Bandy, W. D., & Irion, J. M. (1994). The effect of time on

static stretch on the flexibility of the hamstring

muscles. Physical Therapy, 74(9), 845-850.

Bandy, W. D., Irion, J. M., & Briggler , M. (1997).

The effect of time and frequency of static

stretching on flexibility of the hamstring

muscles. Physical Therapy,77(10), 1090-1096.

Bandy, W. D., Irion, J. M., & Briggler, M. (1998).

The effect of static stretch and dynamic range

of motion training on the flexibility of the

hamstring muscles. Journal of Orthopaedic and

Sports Physical Therapy, 27(4), 295-300.

Borstad, J. D. (2008). Measurement of Pectoralis

Minor Muscle Length: Validation and Clinical

Application. Journal of Orthopaedic & Sports

Physical Therapy, 38(4), 169-174.

Borstad, J. D., & Ludewig, P. M. (2005). The effect of

long versus short pectoralis minor resting length

on scapular kinematics in healthy individuals.

Journal of Orthopaedic and Sports Physical

Therapy, 35(4), 227-238.

Borstad, J. D., & Ludewig, P. M. (2006). Comparison of

three stretches for the pectoralis minor muscle.

Journal of Shoulder and Elbow Surgery, 15(3),

-330.

Cools, A. M., Johansson, F. R., Cambier, D. C., Velde, A.

V., Palmans, T., & Witvrouw, E. E. (2010).

Descriptive profile of scapulothoracic position,

strength and flexibility variables in adolescent elite

tennis players. British Journal of Sports

Medicine, 44(9), 678 - 684.

Decoster, L. C., Cleland, J., Altieri, C., & Russell, P.

(2005). The effects of hamstring stretching on

range of motion: a systematic literature review.

Journal of Orthopaedic & Sports Physical

Therapy, 35(6), 377-387.

DePino, G. M., Webright, W. G., & Arnold, B. L. (2000).

Duration of Maintained Hamstring Flexibility

After Cessation of an Acute Static Stretching

Protocol. Journal of athletic training, 35(1),

-59.

Finley, M. A., & Lee, R. Y. (2003). Effect of sitting

posture on 3-dimensional scapular kinematics

measured by skin-mounted electromagnetic

tracking sensors. Archives of Physical Medicine

and Rehabilitation, 84(4), 563-568.

Griegel-Morris, P., Larson, K., Mueller-Klaus, K., &

Oatis, C. A. (1992). Incidence of common postural

abnormalities in the cervical, shoulder, and thoracic

regions and their association with pain in two

age groups of healthy subjects. Physical Therapy,

(6), 425-431.

Gupta, M., Dashottar, A., & Borstad, J. D. (2013). Scapula

kinematics differ by body mass index. Journal

of Applied Biomechanics, 29(4), 380-385.

Ha, S. M., Kwon, O. Y., Cynn, H. S., Lee, W. H., Park, K.

N., Kim, S. H. & Jung, D. Y. (2012). Comparison

of electromyographic activity of the lower

trapezius and serratus anterior muscle in different

arm-lifting scapular posterior tilt exercises.

Physical Therapy in Sport, 13(4), 227-232.

Hrysomallis, C. (2010). Effectiveness of Strengthening

and Stretching Exercises for the Postural

Correction of Abducted Scapulae: A Review.

The Journal of Strength and Conditioning

Research 24(2), 567-574.

Kim, M. K., Lee, J. C., & Yoo, K. T. (2018). The effects

of shoulder stabilization exercises and pectoralis

minor stretching on balance and maximal shoulder

muscle strength of healthy young adults with round

shoulder posture. Journal of Physical Therapy

Science, 30(3), 373-380.

Kisner, C., & Colby, L. A. (1996). Therapeutic exercise;

Foundations and techniques. Philadelphia.

Lee, J., Cynn, H. S., Yoon, T. L., Ko, C. H., Choi, W. J.,

Choi, S. A., & Choi, B. S. (2015). The effect of

scapular posterior tilt exercise, pectoralis minor

stretching, and shoulder brace on scapular

alignment and muscles activity in subjects

with round-shoulder posture. Journal of

Electromyography and Kinesiology, 15(1),

-114.

Lee, S. H., Kim, Y., Lee, D. G., Lee, K. B., & Lee, G. C.

(2017). Osteokinematic analysis during shoulder

abduction using the C-arm. Physical Therapy

Rehabilitation Science, 6(4), 208-213.

Lee, S. K., Yang, D. S., Kim, H. Y., & Choy, W. S.

(2013). A comparison of 3D scapular kinematics

between dominant and nondominant shoulders

during multiplanar arm motion. Indian Journal of

Orthopaedics, 47(2), 135 -142.

Muraki, T., Aoki, M., Izumi, T., Fujii, M., Hidaka, E.,

& Miyamoto, S. (2009). Lengthening of the

Pectoralis Minor Muscle During Passive Shoulder

Motions and Stretching Techniques: A Cadaveric

Biomechanical Study. Physical Therapy, 89(4),

-341.

Muscolino, J. E. (2016). Muscolino. Kinesiology

The skeletal system and muscle function. In 3

(Ed.), (pp. 322-323): Elsevier.

Page, P. (2011). Shoulder muscle imbalance and

subacromial impingement syndrome in overhead

athletes. The International Journal of Sports

Physical Therapy, 6(1), 51-58.

Park, S. Y., & Yoo, W. G. (2013). Effect of Sustained

Typing Work on Changes in Scapular Position,

Pressure Pain Sensitivity and Upper Trapezius

Activity. Journal of Occupational Health, 55(3),

-172.

Reinold, M. M. (2015). What is the Best Stretch for the

Pectoralis Minor?, Retrieved from https://

mikereinold.com/pectoralis-minor-stretch/.

Sahrmann, S. (2002). Diagnosis and Treatment of

Movement Impairment Syndromes (pp. 211).

London: Mosby.

Thigpen, C. A., Padua, D. A., Michener, L. A.,

Guskiewicz, K. M., & Guiliani, C. (2010). Head

and shoulder posture affect scapular mechanics

and muscle activity in overhead tasks. Journal

of Electromyography and Kinesiology, 20(4),

-709.

Tucker, W. S., Armstrong, C. W., Gribble, P. A., &

Timmons, M. K. (2010). Scapular muscle activity

in overhead athletes with symptoms of secondary

shoulder impingement during closed chain

exercises. Archives of physical medicine and

rehabilitation, 91(4), 550 - 556.

Tucker, W. S., Bruenger, A. J., Doster, C. M. & Hoffmeyer,

D. R. (2011). Scapular muscle activity in overhead

and nonoverhead athletes during closed chain

exercises. Clinical journal of sport medicine,

(11), 405-410.

Viriyatharakij, N., Supjareonkul, S., Sirimusika, S.,

Tangwongvarn, W. & Pitakpol, S. (2015). Effects

of active scapular retraction during shoulder

flexion 60 degree on pectoralis minor muscle length

and forward shoulder angle. Journal of Medicine

and Health Sciences, 22(1), 4-10.

Won, E. J., Johnson, P. W., Punnett, L., & Dennerlein, J.

T. (2008). Upper extremity biomechanics in

computer tasks differ by gender. Journal of

electromyography and kinesiology, 19(3), 428-436.

Downloads

Published

2019-05-29

How to Cite

Sungkue ส. ., Septham ฉ. ., & Kongkam อ. . (2019). Comparison of Immediate Effects of Three Types of Static Self-Stretching on Pectoralis Minor Length and Round Shoulder Posture Angle in Young Adult Females. Journal of Nursing and Health Sciences, 13(2), 89–100. Retrieved from https://he01.tci-thaijo.org/index.php/NurseNu/article/view/178634