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- Aasa, Ulrika, et al.
(författare)
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Normalisation of muscle strength for body size : The role of the function assessed
- 2004
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Ingår i: Journal of Human Movement Studies. - 0306-7297. ; 46:2, s. 105-116
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Tidskriftsartikel (refereegranskat)abstract
- The role of body size has often been neglected in routine tests of muscle strength and movement performance. The aim of the present study was to test the hypothesis that different types of functional movement performance require different normalisations in order to assess muscle strength. Twenty-one right-handed male university students were tested on the following functional movement tasks: vertical jump, standing soccer ball kick, seated medicine ball throw and standing maximal isometric lift. Isokinetic strength of active muscle \, groups was also recorded. The performance of the vertical jump and standing s9ccer ball kick demonstrated stronger relationship with the strength of active muscles normalised for body size, while the performance of the s~ated medicine ball throw and standing maximal Iisometric lift demonstrated stronger relationship with the non- normalised strength. It was concluded that the ability of performing functional movements based on overcoming gravitational and/or inertial resistance of subject's own body (such as keeping certain body postures, or various body movements) should be assessed by the tested muscle strength normalised for body size, while the functional performance based on muscle action performed against external objects (e.g. manual material handling, or lifting heavy objects) should be assessed by the non-normalised muscle strength. The obtained f"mdings proved to be in line with our recently proposed classification of muscle strength and functional movement tests based on the role of body size in the re~orded performance.
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| 2. |
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| 3. |
- Nakata, Minori, et al.
(författare)
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Evaluation of workload in ambulance personnel - A preliminary study
- 2002
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Ingår i: Humans in a Complex Environment. - 9173734438
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Konferensbidrag (refereegranskat)abstract
- Musculotendinous tenderness was evaluated in ambulance personnel, and their working load was studied by means of biomechanical analysis of the standard loading and unloading the `stretcher+patient' in and from the vehicle. Swedish and Japanese subjects were tested. The medical examination demonstrated increased tenderness of selected muscles active in work related movement tasks, as well as in spinous processes in both populations. However, a number ofparticular tests suggested higher Ievel of tenderness in the Swedish, as compared with the Japanese personnel. Biomechanical analysis of working tasks demonstrated similar forces, but higher LS-SI, hip and shoulder torques acting in Swedish personnel. This difference appears to be caused by the differences in stretcher construction. Specifically, the Swedish stretcher requires separate lifting of each stretcher side starting from a squat body position, while the Japanese system requires only pushing the stretcher in and pulling it out from the vehicle. We conclude that differences in working technique imposed by available working equipment could contribute to the observed differences in muscle tenderness especially around the shoulders between the two tested populations. However, further studies are needed to elaborate working load and muscle activity while performing standard tasks of ambulance personnel, as well as to explore other possible causes of increased musculotendinous tenderness. Keywords: Ambulance, Muculoskeletal disorders, Muscle tenderness, Spinous process, Biomechanical analyses
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| 4. |
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| 5. |
- Söderfjell, Stefan, 1970-, et al.
(författare)
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Musculoskeletal pain complaints and performance on cognitive tasks over the adult life span
- 2006
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Ingår i: Scandinavian Journal of Psychology. - : Wiley. - 0036-5564 .- 1467-9450. ; 47:5, s. 349-359
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Tidskriftsartikel (refereegranskat)abstract
- The present study aimed at comparing participants with and without self reported musculoskeletal pain in a normal population with regard to performance on a range of tests for episodic memory, semantic memory, and other cognitive functions and to see if expected differences interacted with age. The results showed that participants with pain performed worse on a range of tasks as compared to participants without pain, and that these differences occurred regardless of age. The most robust effects of pain were displayed on tests for vocabulary and construction ability as these were the only effects that remained significant after controlling for years of education and reported depression in separate analyses. When depression and education were controlled for in the same analysis, even these effects were eliminated, suggesting interplay between pain, depressive status, and educational level in the negative effects on cognitive functioning.
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