Reciprocal strength ratio in shoulder abduction/adduction in sports and daily living

Mayer, Frank; Axmann, Detlef; Horstmann, Thomas; Martini, F.; Fritz, J.; Hh, Dickhuth

doi:10.1097/00005768-200110000-00023

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…13 In addition, at the shoulder, the joint angle where the peak torque is generated has been found to be difficult to reproduce between tests. 14,15 Interests of the angle subgroup agonist-antagonist torque ratios A new interpretative approach of the torque ratios between shoulder agonist and antagonist muscle groups is proposed in the current study. In addition to the F/E and Ab/Ad peak torque ratios, the F/E and Ab/Ad torque ratios were evaluated over the entire selected range of motion to refine their interpretation.…”

Section: Limits Of Agonist-antagonist Peak Torque Ratiosmentioning

confidence: 99%

Assessment of agonist–antagonist shoulder torque ratios in individuals with paraplegia: a new interpretative approach

et al. 2008

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Study Design: Cross-sectional study. Objective: To evaluate isokinetic shoulder flexor-extensor (F/E) and abductor-adductor (Ab/Ad) torque ratios in individuals with paraplegia using a new interpretative approach. We proposed to study torque ratios according to joint angle sections (151 angle subgroups) over a selected range of motion. Setting: Pathokinesiology Laboratory, Montreal, Canada. Method: Sixteen individuals with complete motor paraplegia, without shoulder pain or impairment, were included in this study. After a preloading period of 1 s, maximum isokinetic concentric contractions of all muscle groups were completed at 30, 60 and 1201 s À1 over the entire tested ranges of motion (70 to À351 for the flexion-extension and 15 to 601 for the abduction-adduction). After the continuous torque curves were rebuilt, the mean F/E and Ab/Ad torque ratios were calculated and analyzed every 151. Results: A significant modification of the F/E (F ¼ 66.3; Po0.001) and Ab/Ad (F ¼ 100.6; Po0.001) torque ratios was observed according to the 151 angle subgroup evaluated. More precisely, a progressive decline of both the F/E and Ab/Ad ratios was noted as the shoulder flexion or abduction progressed. Angular velocity did not have any influence on torque ratio values. Conclusion: Angle subgroup torque ratio analysis leads to a better estimation of the balance between the agonist and antagonist muscle groups than does traditional peak torque ratio analysis. In individuals with paraplegia, this precise estimation of torque ratios may lead to the development of specific shoulder strengthening programs to prevent muscle imbalance and its consequences.

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Section: Limits Of Agonist-antagonist Peak Torque Ratiosmentioning

confidence: 99%

Assessment of agonist–antagonist shoulder torque ratios in individuals with paraplegia: a new interpretative approach

et al. 2008

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“…Also, prevention of overuse injuries will benefit from training of the musculoskeletal system, focusing on overall force as well as force balance between muscle groups. 24 It is advisable to include strength training of the rotator cuff in the rehabilitation program of patients with SCI, especially for those who have tetraplegia. In addition, special attention to the status of the triceps is warranted because this muscle plays an essential role in tasks related to weight relief.…”

Section: Muscle Forcesmentioning

confidence: 99%

Glenohumeral Contact Forces and Muscle Forces Evaluated in Wheelchair-Related Activities of Daily Living in Able-Bodied Subjects Versus Subjects With Paraplegia and Tetraplegia

Drongelen

Woude

Janssen

et al. 2005

Archives of Physical Medicine and Rehabilitation

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ABSTRACT. van Drongelen S, van der Woude LH, Janssen TW, Angenot EL, Chadwick EK, Veeger DH. Glenohumeral contact forces and muscle forces evaluated in wheelchair-related activities of daily living in able-bodied subjects versus subjects with paraplegia and tetraplegia. Arch Phys Med Rehabil 2005;86: 1434-40.Objective: To estimate the differences in glenohumeral contact forces and shoulder muscle forces between able-bodied subjects and subjects with paraplegia and tetraplegia during wheelchair-related activities of daily living (ADLs).Design: Kinematics and external forces were measured during wheelchair ADLs (level propulsion, weight-relief lifting, reaching) and processed by using an inverse dynamics 3-dimensional biomechanical model.Setting: Biomechanics laboratory. Participants: Five able-bodied subjects, 8 subjects with paraplegia, and 4 subjects with tetraplegia (Nϭ17).Interventions: Not applicable. Main Outcome Measures: Glenohumeral contact forces and shoulder muscle forces.Results: Peak contact forces were significantly higher for weight-relief lifting compared with reaching and level propulsion (PϽ.001). High relative muscle force of the rotator cuff was seen, apparently needed to stabilize the joint. For weight-relief lifting, total relative muscle force was significantly higher for the tetraplegia group than for the able-bodied group (Pϭ.022).Conclusions: Glenohumeral contact forces were significantly higher for weight-relief lifting and highest over the 3 tasks for the tetraplegia group. Without taking paralysis into account, more muscle force was estimated for the subjects with tetraplegia during weight-relief lifting.

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Relationship between postural control and muscle activity during a handstand in young and adult gymnasts

Kochanowicz

Niespodziński

Marina

et al. 2018

Human Movement Science

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Reciprocal strength ratio in shoulder abduction/adduction in sports and daily living

Cited by 10 publications

References 25 publications

Assessment of agonist–antagonist shoulder torque ratios in individuals with paraplegia: a new interpretative approach

Assessment of agonist–antagonist shoulder torque ratios in individuals with paraplegia: a new interpretative approach

Glenohumeral Contact Forces and Muscle Forces Evaluated in Wheelchair-Related Activities of Daily Living in Able-Bodied Subjects Versus Subjects With Paraplegia and Tetraplegia

Relationship between postural control and muscle activity during a handstand in young and adult gymnasts

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