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- Peolsson, Anneli, et al.
(författare)
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Cervical Muscle Activity During Loaded Arm Lifts in Patients 10 Years Postsurgery for Cervical Disc Disease
- 2013
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Ingår i: Journal of Manipulative and Physiological Therapeutics. - : Elsevier. - 0161-4754 .- 1532-6586. ; 36:5, s. 292-299
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Tidskriftsartikel (refereegranskat)abstract
- ObjectiveThe purpose of this study was to compare the mechanical activity of the neck muscles during loaded arm lifting tasks in individuals with long-standing disability after anterior cervical decompression and fusion (ACDF) with that of healthy controls.MethodsTen individuals (mean age, 60 years; SD, 7.1) who underwent ACDF (10-13 years previously) for cervical disc disease and 10 healthy age- and sex-matched controls participated in the study. Ultrasonography was used to investigate the degree of deformation and deformation rate of ventral and dorsal neck muscles at the C4 segmental level during a single (1 × arm flexion to 120°) and repeated (10 × arm flexion to 90°) loaded arm elevation condition.ResultsThe ACDF group showed greater deformation and deformation rate of the longus capitis (P = .02) and deformation rate of the sternocleidomastoid (P = .04) during the 120° arm lift. For repeated 90° arm lift, there was a significant group effect with higher deformation rate values observed in the longus capitis (P = .005-.01) and multifidus (P = .03) muscles in the ACDF group. Muscle behavior did not change the repeated arm lifts (no group × time interactions) for either the ventral or the dorsal muscles.ConclusionsFor study participants, greater muscle mechanical activity levels were observed in the ventral and multifidus muscles of patients with persistent symptoms after ACDF. These differences may indicate altered motor strategy in this patient group when performing the upper limb task and may need to be considered when prescribing exercise for postsurgical rehabilitation.
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| 2. |
- Peolsson, Anneli, et al.
(författare)
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Is there a difference in the pattern of muscle activity when performing neck exercises with a guild board versus a pulley?
- 2013
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Ingår i: Journal of Rehabilitation Medicine. - : Stiftelsen Rehabiliteringsinformation. - 1650-1977 .- 1651-2081. ; 45:9, s. 900-905
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Tidskriftsartikel (refereegranskat)abstract
- Objective: Guild boards and pulleys are apparatus commonly used to train cervical muscle function for their purported benefit in facilitating activity of the deeper muscle layers, although this effect has not been substantiated. The objective of this study was to compare the activity of the different layers of cervical muscles when performing exercise with these 2 types of apparatus.Subjects: A total of 19 healthy persons (mean age 28 years, (standard deviation 7 years).Design: Ultrasound measurements of muscle deformation and deformation rate were recorded from the dorsal and ventral neck muscle layers during extension and flexion exercises. Pulley exercises were performed in the upright sitting position against a standardized resistance (men 2 kg, women 1 kg) and guild board exercises at an angle of 45 degrees.Results: The dorsal muscles generally showed greater levels of deformation and deformation rate during exercise with the guild board compared with the pulley system (p<0.05), but with no significant differences in relative activity between the deep and superficial muscle layers (condition x muscle interaction (p>0.05)). No differences were observed for the ventral muscles between exercise methods (p>0.05).Conclusion: While both exercise methods appear to train cervical muscle function, neither appear to be more selective in facilitating deep cervical muscle activity, probably as they involve very similar cervical kinematics.
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