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  • 1. de Alwis, M. P.
    et al.
    Lo Martire, Riccardo
    Äng, Björn
    Garme, K.
    Development and validation of a web-based questionnaire for surveying the health and working conditions of high-performance marine craft populations2016In: BMJ Open, ISSN 2044-6055, E-ISSN 2044-6055, Vol. 6, no 6, article id e011681Article in journal (Refereed)
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  • 2. de Alwis, M.P.
    et al.
    Garme, K:
    Lo Martire, Riccardo
    Kåsin, J.I.
    Äng, Björn
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Centre for Clinical Research Dalarna, Falun, Sweden; Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Crew acceleration exposure, health and performance in high-speed operations at sea2017Conference paper (Refereed)
    Abstract [en]

    The presented research program investigates the association between working conditions aboard High-Speed Craft (HSC) and its outcomes in terms of acceleration exposure and crew health and systems performance respectively. The aim is to identify the related risk factors and further, to use them to improve the assessment criteria in a simulation-based-design framework. The investigation initially document a seaborne population by a web-based questionnaire tailored for High-Performance Marine Craft Personnel (HPMCP) and similar populations. Then data is collected during regular service by measuring craft acceleration and through another questionnaire especially resolute on perceived work-exposure, health and performance. Exposure and performance data is collected daily and health data weekly, depending on seaborne frequency. The population repeats the prevalence questionnaire about a year later enabling a longitudinal follow-up for identifying long-term effects of exposure. The paper reports the two questionnaires´ development and pilot test as well as the first application for baseline data collection in the target group. The results indicate health and performance characteristics of the study population and data shows a promising correlation between the self-reported subjective exposure and the measured objective acceleration. Data indicates a comparatively higher prevalence of musculoskeletal pain in the study population than that of the general population.

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  • 3. Gladh, K.
    et al.
    Lo Martire, Riccardo
    Äng, Björn
    Lindholm, P.
    Nilsson, J.
    Westman, A.
    Decelerations of parachute opening shock in skydivers2017In: Aerospace Medicine and Human Performance, ISSN 2375-6314, Vol. 88, no 2, p. 121-127Article in journal (Refereed)
  • 4. Lo Martire, Riccardo
    et al.
    de Alwis, Manudul Pahansen
    Äng, Björn
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska institutet.
    Garme, Karl
    Construction of a web-based questionnaire for longitudinal investigation of work exposure, musculoskeletal pain and performance impairments in high-performance marine craft populations2017In: BMJ Open, ISSN 2044-6055, E-ISSN 2044-6055, Vol. 7, no 7, article id e016006Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: High-performance marine craft personnel (HPMCP) are regularly exposed to vibration and repeated shock (VRS) levels exceeding maximum limitations stated by international legislation. Whereas such exposure reportedly is detrimental to health and performance, the epidemiological data necessary to link these adverse effects causally to VRS are not available in the scientific literature, and no suitable tools for acquiring such data exist. This study therefore constructed a questionnaire for longitudinal investigations in HPMCP.

    METHODS: A consensus panel defined content domains, identified relevant items and outlined a questionnaire. The relevance and simplicity of the questionnaire's content were then systematically assessed by expert raters in three consecutive stages, each followed by revisions. An item-level content validity index (I-CVI) was computed as the proportion of experts rating an item as relevant and simple, and a scale-level content validity index (S-CVI/Ave) as the average I-CVI across items. The thresholds for acceptable content validity were 0.78 and 0.90, respectively. Finally, a dynamic web version of the questionnaire was constructed and pilot tested over a 1-month period during a marine exercise in a study population sample of eight subjects, while accelerometers simultaneously quantified VRS exposure.

    RESULTS: Content domains were defined as work exposure, musculoskeletal pain and human performance, and items were selected to reflect these constructs. Ratings from nine experts yielded S-CVI/Ave of 0.97 and 1.00 for relevance and simplicity, respectively, and the pilot test suggested that responses were sensitive to change in acceleration and that the questionnaire, following some adjustments, was feasible for its intended purpose.

    CONCLUSIONS: A dynamic web-based questionnaire for longitudinal survey of key variables in HPMCP was constructed. Expert ratings supported that the questionnaire content is relevant, simple and sufficiently comprehensive, and the pilot test suggested that the questionnaire is feasible for longitudinal measurements in the study population.

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  • 5. Lo Martire, Riccardo
    et al.
    Gladh, K.
    Westman, A.
    Lindholm, P.
    Nilsson, J.
    Äng, Björn
    Neck muscle activity in skydivers during parachute opening shock2016In: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 26, no 3, p. 307-16Article in journal (Refereed)
  • 6. Lo Martire, Riccardo
    et al.
    Gladh, Kristofer
    Westman, Anton
    Äng, Björn
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska Institutet.
    Neck muscle EMG-force relationship and its reliability during isometric contractions2017In: Sports medicine - open, ISSN 2199-1170, Vol. 3, no 1, article id 16Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Susceptible to injury, the neck is subject to scientific investigations, frequently aiming to elucidate possible injury mechanisms via surface electromyography (EMG) by indirectly estimating cervical loads. Accurate estimation requires that the EMG-force relationship is known and that its measurement error is quantified. Hence, this study examined the relationship between EMG and isometric force amplitude of the anterior neck (AN), the upper posterior neck (UPN), and the lower posterior neck (LPN) and then assessed the relationships' test-retest reliability across force-percentiles within and between days.

    METHODS: EMG and force data were sampled from 18 participants conducting randomly ordered muscle contractions at 5-90% of maximal voluntary force during three trials over 2 days. EMG-force relationships were modeled with general linear mixed-effects regression. Overall fitted lines' between-trial discrepancies were evaluated. Finally, the reliability of participants' fitted regression lines was quantified by an intraclass correlation coefficient (ICC) and the standard error of measurement (SEM).

    RESULTS: A rectilinear model had the best fit for AN while positively oriented quadratic models had the best fit for UPN and LPN, with mean adjusted conditional coefficients of determination and root mean square errors of 0.97-0.98 and 4-5%, respectively. Overall EMG-force relationships displayed a maximum 6% between-trial discrepancy and over 20% of maximal force, and mean ICC was above 0.79 within day and 0.27-0.61 between days across areas. Corresponding SEM was below 12% both within and between days across areas, excluding UPN between days, for which SEM was higher.

    CONCLUSIONS: EMG-force relationships were elucidated for three neck areas, and provided models allow inferences to be drawn from EMG to force on a group level. Reliability of EMG-force relationship models was higher within than between days, but typically acceptable for all but the lowest contraction intensities, and enables adjustment for measurement imprecision in future studies.

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  • 7.
    Lo Martire, Riccardo
    et al.
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska Institutet.
    Äng, Björn
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska Institutet; Center for Clinical Research Dalarna - Uppsala University, Falun.
    Gerdle, Björn
    Vixner, Linda
    Dalarna University, School of Education, Health and Social Studies, Medical Science.
    Psychometric properties of Short Form-36 Health Survey, EuroQol 5-dimensions, and Hospital Anxiety and Depression Scale in patients with chronic pain2019In: Pain, ISSN 0304-3959, E-ISSN 1872-6623, Vol. 161, no 1, p. 83-95Article in journal (Refereed)
    Abstract [en]

    Recent research has highlighted a need for the psychometric evaluation of instruments targeting core domains of the pain experience in chronic pain populations. In this study, the measurement properties of SF-36, EQ-5D, and HADS were analyzed within the item response-theory framework based on data from 35,908 patients. To assess the structural validity of these instruments, the empirical representations of several conceptually substantiated latent structures were compared in a cross-validation procedure. The most structurally sound representations were selected from each questionnaire and their internal consistency reliability computed as a summary of their precision. Lastly, questionnaire scores were correlated to each other to evaluate their convergent and discriminant validity. Our results supported that SF-36 is an acceptable measure of two independent constructs of physical and mental health. In contrast, although the approach to summarize the HRQoL construct of EQ-5D as a unidimensional score was valid, its low reliability rendered practical model implementation of doubtful utility. Finally, rather than being separated into two subscales of anxiety and depression, HADS was a valid and reliable measure of overall emotional distress. In support of convergent and discriminant validity, correlations between questionnaires showed that theoretically similar traits were highly associated whereas unrelated traits were not. Our models can be applied to score SF-36 and HADS in chronic pain patients, but we recommend against using the EQ-5D model due to its low reliability. These results are useful for researchers and clinicians involved in chronic pain populations, as questionnaires' properties determine their discriminating ability in patient status assessment.

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  • 8. Pousette, M. W.
    et al.
    Lo Martire, Riccardo
    Linder, J.
    Kristoffersson, M.
    Äng, Björn
    Neck Muscle Strain in Air Force Pilots Wearing Night Vision Goggles2016In: Aerospace Medicine and Human Performance, ISSN 2375-6314, E-ISSN 2375-6322, Vol. 87, no 11, p. 928-932Article in journal (Refereed)
  • 9.
    Tseli, Elena
    et al.
    Karolinska Institutet.
    Grooten, Wim
    Gerdle, Björn
    Lo Martire, Riccardo
    Karolinska Institutet.
    Äng, Björn
    Karolinska Institutet; Karolinska University Hospital; Center for Clinical Research Dalarna.
    Study Protocol: Multimodal rehabilitation in patients with chronic muskuloskeletal pain: a nationwide multicentre evaluation of effectiveness in routine care2015Conference paper (Refereed)
  • 10.
    Tseli, Elena
    et al.
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska Institutet.
    Vixner, Linda
    Dalarna University, School of Education, Health and Social Studies, Medical Science.
    Lo Martire, Riccardo
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska Institutet.
    Grooten, Wilhelmus J A
    Gerdle, Björn
    Äng, Björn
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska Institutet; Center for Clinical Research Dalarna - Uppsala University, Falun.
    Prognostic factors for improved physical and emotional functioning one year after interdisciplinary rehabilitation in patients with chronic pain: Results from a national quality registry in Sweden2020In: Journal of Rehabilitation Medicine, ISSN 1650-1977, E-ISSN 1651-2081, Vol. 52, no 2, article id UNSP jrm00019Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: To investigate prognostic factors for physical and emotional functioning following interdisciplinary multimodal pain rehabilitation, by targeting patients' baseline characteristics and health measures.

    METHODS: A prospective cohort of 2,876 patients from 38 specialist clinics across Sweden, who were completing interdisciplinary multimodal pain rehabilitation programmes, was followed through the Swedish Quality Registry for Pain Rehabilitation, from initial assessment to 12-month follow-up. Using logistic regression, baseline data were regressed to predict improvement in Physical functioning and Emotional functioning, fused by principal component analyses using the 36-item Short Form Health Survey (SF-36) and the Hospital Anxiety and Depression Scale (HADS).

    RESULTS: Employment status emerged as having the largest effect sizes in both Physical functioning and Emotional functioning; Working: odds ratio (OR) 2.05 (95% confidence interval (95% CI) 1.64-2.56) and OR 1.59 (95% CI 1.27-1.98), respectively. Strong beliefs in restored health, better initial emotional health, lower levels of pain and pain interference, and younger age all predicted Physical functioning. European origin, higher levels of general activity, and sense of life control all predicted Emotional functioning. Worse initial physical and emotional health predicted the corresponding dependent outcomes.

    CONCLUSION: Employment was consistently found to be an important prognostic factor, suggesting the significance of avoiding delay in interdisciplinary multimodal pain rehabilitation. A positive treatment expectancy was of importance. In general, multidimensional measures indicated that better initial status was more favourable; however, inconsistency implies a complex prognostic picture.

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  • 11.
    Tseli, Elena
    et al.
    Karolinska Institutet.
    Vixner, Linda
    Dalarna University, School of Education, Health and Social Studies, Medical Science.
    Lo Martire, Riccardo
    Karolinska Institutet.
    Grooten, Wim
    Gerdle, Björn
    Äng, Björn
    Dalarna University, School of Education, Health and Social Studies, Medical Science. Karolinska Institutet; Center for Clinical Research Dalarna - Uppsala University.
    Prognostic Factors for 12-month Outcome After Interdisciplinary Treatment in Patients with Chronic Pain: a Prospective Multicenter Cohort Study2019Conference paper (Refereed)
1 - 11 of 11
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  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • Other style
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  • de-DE
  • en-GB
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  • nn-NO
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