Cees Van Der Schans - Academia.edu (original) (raw)

Papers by Cees Van Der Schans

BMC Sports Science, Medicine and Rehabilitation, 2015

Activity trackers can potentially stimulate users to increase their physical activity behavior. T... more Activity trackers can potentially stimulate users to increase their physical activity behavior. The aim of this study was to examine the reliability and validity of ten consumer activity trackers for measuring step count in both laboratory and free-living conditions. Healthy adult volunteers (n = 33) walked twice on a treadmill (4.8 km/h) for 30 min while wearing ten different activity trackers (i.e. Lumoback, Fitbit Flex, Jawbone Up, Nike+ Fuelband SE, Misfit Shine, Withings Pulse, Fitbit Zip, Omron HJ-203, Yamax Digiwalker SW-200 and Moves mobile application). In free-living conditions, 56 volunteers wore the same activity trackers for one working day. Test-retest reliability was analyzed with the Intraclass Correlation Coefficient (ICC). Validity was evaluated by comparing each tracker with the gold standard (Optogait system for laboratory and ActivPAL for free-living conditions), using paired samples t-tests, mean absolute percentage errors, correlations and Bland-Altman plots. Test-retest analysis revealed high reliability for most trackers except for the Omron (ICC .14), Moves app (ICC .37) and Nike+ Fuelband (ICC .53). The mean absolute percentage errors of the trackers in laboratory and free-living conditions respectively, were: Lumoback (-0.2, -0.4), Fibit Flex (-5.7, 3.7), Jawbone Up (-1.0, 1.4), Nike+ Fuelband (-18, -24), Misfit Shine (0.2, 1.1), Withings Pulse (-0.5, -7.9), Fitbit Zip (-0.3, 1.2), Omron (2.5, -0.4), Digiwalker (-1.2, -5.9), and Moves app (9.6, -37.6). Bland-Altman plots demonstrated that the limits of agreement varied from 46 steps (Fitbit Zip) to 2422 steps (Nike+ Fuelband) in the laboratory condition, and 866 steps (Fitbit Zip) to 5150 steps (Moves app) in the free-living condition. The reliability and validity of most trackers for measuring step count is good. The Fitbit Zip is the most valid whereas the reliability and validity of the Nike+ Fuelband is low.

BMC geriatrics, 2015

Differentiating mild cognitive impairment (MCI) from dementia is important, as treatment options ... more Differentiating mild cognitive impairment (MCI) from dementia is important, as treatment options differ. There are few short (<5 min) but accurate screening tools that discriminate between MCI, normal cognition (NC) and dementia, in the Dutch language. The Quick Mild Cognitive Impairment (Qmci) screen is sensitive and specific in differentiating MCI from NC and mild dementia. Given this, we adapted the Qmci for use in Dutch-language countries and validated the Dutch version, the Qmci-D, against the Dutch translation of the Standardised Mini-Mental State Examination (SMMSE-D). The Qmci was translated into Dutch with a combined qualitative and quantitative approach. In all, 90 participants were recruited from a hospital geriatric clinic (25 with dementia, 30 with MCI, 35 with NC). The Qmci-D and SMMSE-D were administered sequentially but randomly by the same trained rater, blind to the diagnosis. The Qmci-D was more sensitive than the SMMSE-D in discriminating MCI from dementia, wi...

Journal of Advanced Nursing, 2015

To develop and psychometrically test the Groningen Ageing Resilience Inventory. Ageing is a proce... more To develop and psychometrically test the Groningen Ageing Resilience Inventory. Ageing is a process that is often accompanied by functional limitation, disabilities and losses. Instead of focusing on these negative events of ageing, there are opportunities in focusing on adaptation mechanisms, like resilience, that are helpful to cope with those adversities. Cross-sectional study. The study was conducted from 2011-2012. First, a conceptual model of resilience during the ageing process was constructed. Next, items were formulated that made up a comprehensive template questionnaire reflecting the model. Finally, a cross-sectional study was performed to evaluate the construct validity and internal consistency of this template 16-item questionnaire. Participants (N = 229) with a mean age of 71·5 years, completed the template 16-item Groningen Ageing Resilience Inventory, and performance based tests and psychological questionnaires. Exploratory factor analysis resulted in a two factor solution of internal and external resources of resilience. Three items did not discriminate well between the two factors and were deleted, remaining a final 13-item questionnaire that shows evidence of good internal consistency. The direction and magnitude of the correlations with other measures support the construct validity. The Groningen Ageing Resilience Inventory is a useful instrument that can help nurses, other healthcare workers, researchers and providers of informal care to identify the internal and external resources of resilience in individuals and groups. In a multidisciplinary biopsychosocial approach this knowledge provides tools for empowering older patients in performing health promoting behaviors and self-care tasks.

BMC Geriatrics, 2015

Background: Improved preferred gait speed in older adults is associated with increased survival r... more Background: Improved preferred gait speed in older adults is associated with increased survival rates. There are inconsistent findings in clinical trials regarding effects of exercise on preferred gait speed, and heterogeneity in interventions in the current reviews and meta-analyses. Objective: to determine the meta-effects of different types or combinations of exercise interventions from randomized controlled trials on improvement in preferred gait speed. Methods: Data sources: A literature search was performed; the following databases were searched for studies from 1990 up to 9 December 2013: PubMed, EMBASE, EBSCO (AMED, CINAHL, ERIC, Medline, PsycInfo, and SocINDEX), and the Cochrane Library. Study eligibility criteria: Randomized controlled trials of exercise interventions for older adults ≥ 65 years, that provided quantitative data (mean/SD) on preferred gait speed at baseline and post-intervention, as a primary or secondary outcome measure in the published article were included. Studies were excluded when the PEDro score was ≤4, or if participants were selected for a specific neurological or neurodegenerative disease, Chronic Obstructive Pulmonary Disease, cardiovascular disease, recent lower limb fractures, lower limb joint replacements, or severe cognitive impairments. The meta-effect is presented in Forest plots with 95 % confidence Study appraisal and synthesis methods: intervals and random weights assigned to each trial. Homogeneity and risk of publication bias were assessed.

Tijdschrift voor kindergeneeskunde, 2003

Summary It is still not clear whether severity of asthma influences quality of life in children.... more Summary It is still not clear whether severity of asthma influences quality of life in children. The purpose of this study was to compare the quality of life in infants with mild, moderate and severe asthma. Methods: Health related quality of life (hrqol) in 89 asthmatic children (7-13 years) and their parents was measured with a generic and two disease-specific questionnaires

To assess the validity and reliability of the Dutch version of the Oral Health Impact Profile (OH... more To assess the validity and reliability of the Dutch version of the Oral Health Impact Profile (OHIP-14) in a sample of patients of a forensic psychiatric hospital

British Journal of Community Nursing, 2015

Older adults living in deprived areas are at risk of developing frailty and becoming care depende... more Older adults living in deprived areas are at risk of developing frailty and becoming care dependent. The aim of this qualitative study is to explore how community-dwelling, older adults living in deprived neighbourhoods address ageing issues. In-depth interviews were conducted with 20 participants who were community-dwelling (independently living), aged 65 years and older, not dependent on care, and living in a socioeconomically deprived urban neighbourhood in the northern part of the Netherlands. Data were analysed using the constant comparative method. Our findings emphasise the resourcefulness of these older adults when coping with apparent adversities. Simultaneously, the findings convey deficits concerning knowledge about ageing and health. Despite this, it appeared that these older adults possess an optimistic view of life, accept their situation, and are content with the capacities they still possess. Perspectives on how older adults address ageing issues are important for developing leads for nursing practice. Nurses will be challenged to recognise the coping strategies of older adults, particularly considering their deficits in health knowledge. The results of this study may serve as a basis for community nurses to manage care for older adults in deprived neighbourhoods.

Intensive Care Medicine, 2003

Study objective: Endotra- cheal suctioning in intubated patients is routinely applied in most ICU... more Study objective: Endotra- cheal suctioning in intubated patients is routinely applied in most ICUs but may have negative side effects. We hypothesised that on-demand mini- mally invasive suctioning would have fewer side effects than routine deep endotracheal suctioning, and would be comparable in duration of intubation, length of stay in the ICU, and ICU mortality. Design: Random- ised prospective clinical

The aim of this study was to test the inter- and intra- observer reliability of the Physician Rat... more The aim of this study was to test the inter- and intra- observer reliability of the Physician Rating Scale (PRS) and the Edinburgh Visual Gait Analysis Interval Testing (GAIT) scale for use in children with cerebral palsy (CP). Both assessment scales are quantitative observational scales, evaluating gait. The study involved 24 patients ages 3 to 10 years (mean age 6.7

Physical therapy, Jan 2, 2015

Physical therapist's (PTs) recommendations to patients to avoid daily physical activity can b... more Physical therapist's (PTs) recommendations to patients to avoid daily physical activity can be influenced by a PT's kinesiophobic beliefs. Little is known about the amount of influence of PT's kinesiophobic beliefs on a patient's actual lifting capacity during a lifting test. The objective of this study was to determine the influence of PTs kinesiophobic beliefs on lifting capacity in healthy persons. The study was a blinded, randomized controlled study. Subjects (n=256; 105 male) were PT students who performed a lifting capacity test. Examiners (n=24) were selected from second year PT students. Subjects in Group A (n=124) were tested in the presence of an examiner with high scores on the Tampa Scale of Kinesiophobia for Health Care providers (TSK-HC); Group B (n=132) in the presence of an examiner with low scores on the TSK-HC. Mixed model analyses were performed on lifting capacity to test for possible (interacting) effects. Mean (SD) lifting capacity in Group A wa...

BMJ open, 2015

Stimulating physical activity behaviour in persons with a physical disability is important, espec... more Stimulating physical activity behaviour in persons with a physical disability is important, especially after discharge from rehabilitation. A tailored counselling programme covering both the period of the rehabilitation treatment and the first months at home seems on the average effective. However, a considerable variation in response is observed in the sense that some patients show a relevant beneficial response while others show no or only a small response on physical activity behaviour. The Rehabilitation, Sports and Active lifestyle (ReSpAct) study aims to estimate the associations of patient and programme characteristics with patients' physical activity behaviour after their participation in a tailored counselling programme. A questionnaire-based nationwide longitudinal prospective cohort study is conducted. Participants are recruited from 18 rehabilitation centres and hospitals in The Netherlands. 2000 participants with a physical disability or chronic disease will be foll...

Journal of back and musculoskeletal rehabilitation, 2015

The predictive validity of the Low Back Pain Perception Scale is determined in two studies in gen... more The predictive validity of the Low Back Pain Perception Scale is determined in two studies in general practice and showed sufficient discriminative ability, although the psychometric properties of the scale have never been established until now. To determine the reliability and validity of the Low Back Pain Perception Scale in acute nonspecific low back pain patients. The Low Back Pain Perception Scale has been authorized translated into Dutch by two bilingual content experts. A sample of 84 acute low back pain patients in physiotherapy primary care, mean age (SD) age 42 (12) years participated in this study. Internal reliability and a test-retest procedure within one-week interval were evaluated. The internal consistency Cronbach α=0.38 (95% CI 0.09 to 0.56) and test - retest reliability within one week Intra Class Correlation coefficient=0.50 (95% CI 0.31 to 0.64). Minimal Detectable Change was measured 1.95. The concurrent validity demonstrates Pearson's r=0.35 (95% CI 0.14 t...

Clinical rehabilitation, 2006

To investigate the criterion or concurrent validity of the Northwick Park Dependency Score (NPDS)... more To investigate the criterion or concurrent validity of the Northwick Park Dependency Score (NPDS) for determining nursing dependence in different rehabilitation groups, with the Barthel Index (BI) and the Care Dependency Scale (CDS). Cross-sectional study. Centre for Rehabilitation of the University Medical Center Groningen, The Netherlands. Patients after stroke, spinal cord injury, multitrauma, head injury, amputation, rheumatoid arthritis, diabetes mellitus, lung diseases, tuberculosis and coronary artery disease. One hundred and fifty-four patients were included. The Northwick Park Dependency Score (NPDS), the Barthel Index (BI) and the Care Dependency Scale (CDS). The correlation (rho) between the NPDS and the BI for all groups was -0.87; R2=0.76 (n=154). Per patient group rho varied from -0.70 (R2=0.49) to -0.93 (R2=0.86). The overall correlation between the NPDS and CDS was larger than the criterion of rho=0.60 (r=-0.74; R2=0.55) but was <0.60 in the rheumatoid arthritis a...

Physical Therapy, 2014

Exercise capacity, muscle function, and physical activity levels remain reduced in recipients of ... more Exercise capacity, muscle function, and physical activity levels remain reduced in recipients of lung transplantation. Factors associated with this deficiency in functional exercise capacity have not been studied longitudinally. The study aims were to analyze the longitudinal change in 6-minute walking distance and to identify factors contributing to this change. This was a longitudinal historical cohort study. Data from patients who received a lung transplantation between March 2003 and March 2013 were analyzed for the change in 6-minute walking distance and contributing factors at screening, discharge, and 6 and 12 months after transplantation. Linear mixed-model and logistic regression analyses were performed with data on characteristics of patients, diagnosis, waiting list time, length of hospital stay, rejection, lung function, and peripheral muscle strength. Data from 108 recipients were included. Factors predicting 6-minute walking distance were measurement moment, diagnosis, sex, quadriceps muscle and grip strength, forced expiratory volume in 1 second (percentage of predicted), and length of hospital stay. After transplantation, 6-minute walking distance increased considerably. This initial increase was not continued between 6 and 12 months. At 12 months after lung transplantation, 58.3% of recipients did not reach the cutoff point of 82% of the predicted 6-minute walking distance. Logistic regression demonstrated that discharge values for forced expiratory volume in 1 second and quadriceps or grip strength were predictive for reaching this criterion. Study limitations included lack of knowledge on the course of disease during the waiting list period, type and frequency of physical therapy after transplantation, and number of missing data points. Peripheral muscle strength predicted 6-minute walking distance; this finding suggests that quadriceps strength training should be included in physical training to increase functional exercise capacity. Attention should be paid to further increasing 6-minute walking distance between 6 and 12 months after transplantation.

European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, 1997

To determine the feasibility and the effectiveness of minimally invasive direct coronary artery b... more To determine the feasibility and the effectiveness of minimally invasive direct coronary artery bypass without cardiopulmonary bypass (MICABG) in patients with left anterior descending (LAD) coronary artery disease, we evaluated 90 consecutive patients who underwent MICABG at the University Hospital of Groningen. Between January 1995 and December 1996, 50 patients (mean age 60 +/- 10.3 years) with documented myocardial ischemia and isolated stenosis of the LAD were selected for MICABG. Patients with any associated cardiac disease or with acute or evolving myocardial infarction were excluded. A small left antero-lateral thoracotomy in the 5th intercostal space was made in all patients, anastomosing the left internal mammary artery (LIMA) to the LAD. A short-term (3 days) postoperative rehabilitation programme was used. Emotional stress (STAY-DY-1 score), wound pain (VAS: visual analogue score) and O2-saturation after a 6 min walking test were measured during hospitalisation and at th...

Journal of Physiotherapy, 2014

The Journal of Pediatrics, 2015

Clinical Pulmonary Medicine, 1998