Immediate Effects of Flexi-bar Exercise With Knee Push-up Plus on Shoulder Joint Position Sense and Muscle Activity in Subjects With Scapular Winging

Assessment and enhancement of joint position sense is an inexact science at best. Anew method of evaluating and improving this sense using motion-tracking technology that incorporates computer visualization graphics was examined. Injured and healthy subjects were evaluated for their abilities to determine shoulder joint position, after abduction, in two tasks. The first was active reproduction of a passively placed angle. The second was visual reproduction of such an angle. A training protocol was added to determine the effectiveness of proprioceptive training in conjunction with 3-D visualization techniques. The primary findings were (a) a significant difference (p= .05) in the level of joint position sense in injured vs. healthy subjects; (b) significantly less accurate reproduction of larger shoulder abduction vs. the smaller movement in the active reproduction task; (c) significantly greater ability to accurately reproduce angles actively vs. visually; and (d) that proprioception training using 3-D visualization techniques significantly increased activeandvisual reproductions of passively placed angles.

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Shoulder Joint Position Sense in Injured and Noninjured Judo Athletes

International Journal of Athletic Therapy & Training ◽

10.1123/ijatt.18.2.29 ◽

2013 ◽

Vol 18 (2) ◽

pp. 29-33 ◽

Cited By ~ 1

Author(s):

Carly May Green ◽

Paul Comfort ◽

Lee Herrington

Keyword(s):

Outcome Measures ◽

Shoulder Joint ◽

External Rotation ◽

Position Sense ◽

Joint Position Sense ◽

Average Error ◽

Joint Position ◽

Joint Stability ◽

Shoulder Injury ◽

Judo Athletes

Context:A reduction in joint position sense (JPS) is sometimes a consequence of shoulder injury that may adversely affect the ability to maintain dynamic joint stability.Objective:To compare shoulder JPS between previously injured and noninjured judokas.Design:Cohort study.Participants:Twenty-nine noninjured subjects (10.93 ± 3.45 years) and eleven injured subjects (15.09 ± 3.39 years).Main Outcome Measures:JPS was tested at 45° and 80°of shoulder external rotation at 90° of abduction.Results:No signifcant difference in JPS was found between previously injured and noninjured judokas at either joint position.Conclusion:Despite evidence that JPS acuity decreases following shoulder injury, this study did not demonstrate a difference in average error between previously injured and noninjured judokas. Uncontrolled confounding factors, such as age and time since injury, may have affected the results. Sport-specifc shoulder joint loading patterns may also be an important factor that affects JPS.

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Relationship Between Shoulder Joint Position Sense and Swimming Performance in Disabled Swimmers

Turkiye Klinikleri Journal of Health Sciences ◽

10.5336/healthsci.2020-78676 ◽

2021 ◽

Vol 6 (3) ◽

pp. 523-530

Author(s):

Eda KURT ◽

Yıldız ERDOĞANOĞLU ◽

Defne KAYA

Keyword(s):

Shoulder Joint ◽

Swimming Performance ◽

Position Sense ◽

Joint Position Sense ◽

Joint Position

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A Clinical Shoulder Proprioception Test Shows Good Reliability, and Decreased Shoulder Joint Position Sense Due to Local Fatigue in Handballers: A Repeated Measures Design

10.21203/rs.3.rs-459791/v1 ◽

2021 ◽

Author(s):

Peter Sutton ◽

Marie Ohlsson ◽

Ulrik Röijezon

Keyword(s):

Shoulder Joint ◽

Repeated Measures ◽

Intraclass Correlation ◽

Position Sense ◽

Joint Position Sense ◽

Joint Position ◽

Good Reliability ◽

Repeated Measures Design ◽

Significant Difference ◽

Specialized Equipment

Abstract Background: Assessment of shoulder proprioception outside the laboratory in the absence of specialized equipment remains a challenge with field-based tests often lacking good reliability, validity and feasibility. This study aimed to enhance the knowledge base surrounding the assessment of shoulder proprioception and investigated the effect of fatigue on shoulder joint position sense (JPS) amongst amateur male handball players.Method: 27 healthy recreationally active participants and 13 amateur male handball players undertook two sessions of active JPS tests using laser pen technology and a calibrated 2-dimensional target to assess test-retest reliability. The active JPS test was then utilized on the subgroup of handball players who were subjected to five bouts of a repeated throwing task in order to investigate the effect of local fatigue on shoulder JPS. Results: The intraclass correlation coefficient for the active JPS test was 0.78 (95% CI = [0.57; 0.89]). Standard error of measurement between trials was 0.70° (range 0.57°-0.90°). For the throwing task, repeated measures analysis of variance revealed a significant interaction for arm x bout (F5=2.74, p=0.028) and a significant effect for arm (F1=5.85, p=0.034). Post hoc analysis showed a significant difference between throwing arm and non-throwing arm after throwing bout one (p=0.036), three (p=0.026) and four (p=0.041). Conclusion: Assessment of the active JPS test showed acceptable reliability and measurement error. Repeated throwing to fatigue decreased shoulder JPS in amateur male handball players which indicate validity of the test to identify reduced proprioception.

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The Effects of Muscle Fatigue on Shoulder Joint Position Sense

The American Journal of Sports Medicine ◽

10.1177/03635465980260021701 ◽

1998 ◽

Vol 26 (2) ◽

pp. 262-265 ◽

Cited By ~ 149

Author(s):

James E. Carpenter ◽

Ralph B. Blasier ◽

Gregory G. Pellizzon

Keyword(s):

Muscle Fatigue ◽

Shoulder Joint ◽

External Rotation ◽

Testing Machine ◽

Position Sense ◽

Joint Position Sense ◽

Joint Position ◽

Isokinetic Testing ◽

Shoulder Dysfunction ◽

Arm Dominance

Proprioception, or joint position sense, probably plays an important role in shoulder joint function. In this study, we assessed the effect of muscle fatigue on shoulder proprioception in 20 volunteers with no shoulder abnormalities. Shoulder proprioception was measured as the threshold to first detection of humeral rotation with the joint at 90° of abduction and 90° of external rotation. Subjects were tested while rested, exercised on a isokinetic testing machine until fatigued, and then retested in an identical fashion. Both shoulders were tested, and the order of dominant and non-dominant shoulder was randomized. Shoulder proprioception was analyzed for its dependence on arm dominance, direction of rotation, and muscle fatigue. Subjects detected external rotation after significantly less movement than they did internal rotation. Overall, before exercise, motion was detected after a mean of 0.92° of rotation. After exercise, this threshold to detection of movement increased to 1.59°, an increase of 73%. This significant increase occurred with both internal and external rotation. The decrease in proprioceptive sense with muscle fatigue may play a role in decreasing athletic performance and in fatigue-related shoulder dysfunction. It remains to be determined if training can lessen this loss in position sense.

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