Effect of Hand Position on EMG Activity of the Posterior Shoulder Musculature During a Horizontal Abduction Exercise

@article{Schoenfeld2013EffectOH,
  title={Effect of Hand Position on EMG Activity of the Posterior Shoulder Musculature During a Horizontal Abduction Exercise},
  author={Brad Jon Schoenfeld and R Gul Tiryaki Sonmez and Morey Kolber and Bret Contreras and Robert Harris and Serife Ozen},
  journal={Journal of Strength and Conditioning Research},
  year={2013},
  volume={27},
  pages={2644–2649}
}
Abstract Schoenfeld, B, Sonmez, RGT, Kolber, MJ, Contreras, B, Harris, R, and Ozen, S. Effect of hand position on EMG activity of the posterior shoulder musculature during a horizontal abduction exercise. J Strength Cond Res 27(10): 2644–2649, 2013—The reverse fly machine is a popular exercise for strengthening the horizontal shoulder abductors including the posterior deltoid. There seems to be little consensus as to which hand position most effectively targets the posterior deltoid despite… 

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References

SHOWING 1-10 OF 20 REFERENCES

Electromyographic analysis of the supraspinatus and deltoid muscles during 3 common rehabilitation exercises.

While all 3 exercises produced similar amounts of supraspinatus activity, the full-can exercise produced significantly less activity of the deltoid muscles and may be the optimal position to recruit the suprspinatus muscle for rehabilitation and testing.

Electromyographic analysis of the glenohumeral muscles during a baseball rehabilitation program.

This study documents that the minimum for an effective and succinct rehabilitation protocol for the glenohumeral muscles would include these exercises.

Dynamic inferior stabilizers of the shoulder joint.

Lines of action and stabilizing potential of the shoulder musculature

Knowledge of the lines of action and stabilizing potential of individual sub‐regions of the shoulder musculature may assist clinicians in identifying muscle‐related joint instabilities, assist surgeons in planning tendon reconstructive surgery, aid in the development of rehabilitation procedures designed to improve joint stability, and facilitate development and validation of biomechanical computer models of the shoulders complex.

Which is the optimal exercise to strengthen supraspinatus?

It is shown that the pendant external rotation and prone external rotation exercises are more valid than the "can" and prone elevation exercises for supraspinatus strengthening in subjects with normal dominant shoulder function.

Muscle Activation During Selected Strength Exercises in Women With Chronic Neck Muscle Pain

The lateral raise and upright row may be suitable alternatives to shrugs during rehabilitation of chronic neck muscle pain with high activation of neck and shoulder muscles in women with chronic neck pain.

Shoulder muscle moment arms during horizontal flexion and elevation.

Relationships between posterior shoulder muscle stiffness and rotation in patients with stiff shoulder.

Findings support that muscle stiffness is related to shoulder range of motion and it is important to consider the posterior deltoid, infraspinatus, and teres minor muscles in the rehabilitation of patients with restricted internal rotation of the shoulder.

Dynamic Glenohumeral Stability Provided by Three Heads of the Deltoid Muscle

Dynamic glenohumeral stability provided by three heads of the deltoid is quantified by a new biomechanical parameter, the dynamic stability index, which considers not only the force vectors generated by individual shoulder muscle, but also the concavity compression mechanism.

Cram's Introduction to Surface Electromyography

Introduction to Surface Electromyography clearly explains how to use SEMG to treat a variety of neuromuscular conditions and addresses the growing uses for surface electromyography.