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Balance ability and postural stability among patients with painful shoulder disorders and healthy controls.

Baierle T, Kromer T, Petermann C, Magosch P, Luomajoki H - BMC Musculoskelet Disord (2013)

Bottom Line: Patients with shoulder pain showed significantly worse results in measurements of postural stability right/left (p < 0.01) and front/back (p < 0.01) as well as balance ability right/left (p = 0.01) and front/back (p < 0.01) compared to healthy controls.There were no significant group differences with regard to symmetry index.Neither pain intensity nor BMI influenced the outcome parameters.

View Article: PubMed Central - HTML - PubMed

Affiliation: ZHAW Zurich University of Applied Sciences, Technikumstrasse 71, Winterthur 8401, Switzerland. luom@zhaw.ch.

ABSTRACT

Background: In therapeutic settings, patients with shoulder pain often exhibit deficient coordinative abilities in their trunk and lower extremities. The aim of the study was to investigate 1) if there is a connection between shoulder pain and deficits in balance ability and postural stability, 2) if pain intensity is related to balance ability and postural stability, and 3) if there is a connection between body mass index (BMI) and balance ability and postural stability.

Methods: In this case-control study, patients (n = 40) with pathological shoulder pain (> 4 months) were matched with a healthy controls (n = 40) and were compared with regard to their balance ability and postural stability. Outcome parameters were postural stability, balance ability and symmetry index which were measured using the S3-Check system. In addition, the influence of shoulder pain intensity and BMI on the outcome parameters was analysed.

Results: Patients with shoulder pain showed significantly worse results in measurements of postural stability right/left (p < 0.01) and front/back (p < 0.01) as well as balance ability right/left (p = 0.01) and front/back (p < 0.01) compared to healthy controls. There were no significant group differences with regard to symmetry index. However, there was a significant (p < 0.01) symmetry shift towards the affected side within the shoulder pain group. There was no correlation between pain intensity and measurements of balance ability or postural stability. Likewise, no correlation between BMI and deficiencies in balance ability and postural stability was established.

Conclusions: Patients with pathological shoulder pain (> 4 months) have deficiencies in balance ability and postural stability; however the underlying mechanisms for this remain unclear. Neither pain intensity nor BMI influenced the outcome parameters. Patients with shoulder pain shift their weight to the affected side. Further research is needed to determine if balance training can improve rehabilitation results in patients with shoulder pathologies.

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Related in: MedlinePlus

Posture while using S3-check. Note: Subject on balance board of S3-Check for right/left-measurement. Tests were performed with crossed arms to eliminate compensatory arm movements.
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Figure 2: Posture while using S3-check. Note: Subject on balance board of S3-Check for right/left-measurement. Tests were performed with crossed arms to eliminate compensatory arm movements.

Mentions: The testing was performed in a calm environment. Study subjects were instructed to remove their shoes and position their feet in a bipedal stance on the balance plate. Tests were performed with arms crossed in front of the body to eliminate compensatory arm movements during the tests and to minimize the influence of shoulder dysfunction (Figure 2). During a warm-up phase (30 second exercise simulating the actual test), the subject familiarised himself with the equipment. An attendant was placed close to the patient during testing in order to minimise the fear of falling, which could modify the outcome measures. The test itself consisted of two randomised consecutive measurement series for each testing direction:


Balance ability and postural stability among patients with painful shoulder disorders and healthy controls.

Baierle T, Kromer T, Petermann C, Magosch P, Luomajoki H - BMC Musculoskelet Disord (2013)

Posture while using S3-check. Note: Subject on balance board of S3-Check for right/left-measurement. Tests were performed with crossed arms to eliminate compensatory arm movements.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3852398&req=5

Figure 2: Posture while using S3-check. Note: Subject on balance board of S3-Check for right/left-measurement. Tests were performed with crossed arms to eliminate compensatory arm movements.
Mentions: The testing was performed in a calm environment. Study subjects were instructed to remove their shoes and position their feet in a bipedal stance on the balance plate. Tests were performed with arms crossed in front of the body to eliminate compensatory arm movements during the tests and to minimize the influence of shoulder dysfunction (Figure 2). During a warm-up phase (30 second exercise simulating the actual test), the subject familiarised himself with the equipment. An attendant was placed close to the patient during testing in order to minimise the fear of falling, which could modify the outcome measures. The test itself consisted of two randomised consecutive measurement series for each testing direction:

Bottom Line: Patients with shoulder pain showed significantly worse results in measurements of postural stability right/left (p < 0.01) and front/back (p < 0.01) as well as balance ability right/left (p = 0.01) and front/back (p < 0.01) compared to healthy controls.There were no significant group differences with regard to symmetry index.Neither pain intensity nor BMI influenced the outcome parameters.

View Article: PubMed Central - HTML - PubMed

Affiliation: ZHAW Zurich University of Applied Sciences, Technikumstrasse 71, Winterthur 8401, Switzerland. luom@zhaw.ch.

ABSTRACT

Background: In therapeutic settings, patients with shoulder pain often exhibit deficient coordinative abilities in their trunk and lower extremities. The aim of the study was to investigate 1) if there is a connection between shoulder pain and deficits in balance ability and postural stability, 2) if pain intensity is related to balance ability and postural stability, and 3) if there is a connection between body mass index (BMI) and balance ability and postural stability.

Methods: In this case-control study, patients (n = 40) with pathological shoulder pain (> 4 months) were matched with a healthy controls (n = 40) and were compared with regard to their balance ability and postural stability. Outcome parameters were postural stability, balance ability and symmetry index which were measured using the S3-Check system. In addition, the influence of shoulder pain intensity and BMI on the outcome parameters was analysed.

Results: Patients with shoulder pain showed significantly worse results in measurements of postural stability right/left (p < 0.01) and front/back (p < 0.01) as well as balance ability right/left (p = 0.01) and front/back (p < 0.01) compared to healthy controls. There were no significant group differences with regard to symmetry index. However, there was a significant (p < 0.01) symmetry shift towards the affected side within the shoulder pain group. There was no correlation between pain intensity and measurements of balance ability or postural stability. Likewise, no correlation between BMI and deficiencies in balance ability and postural stability was established.

Conclusions: Patients with pathological shoulder pain (> 4 months) have deficiencies in balance ability and postural stability; however the underlying mechanisms for this remain unclear. Neither pain intensity nor BMI influenced the outcome parameters. Patients with shoulder pain shift their weight to the affected side. Further research is needed to determine if balance training can improve rehabilitation results in patients with shoulder pathologies.

Show MeSH
Related in: MedlinePlus