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  1. Article ; Online: Sedentary Behaviour Profiling of Office Workers: A Sensitivity Analysis of Sedentary Cut-Points.

    Boerema, Simone T / Essink, Gerard B / Tönis, Thijs M / van Velsen, Lex / Hermens, Hermie J

    Sensors (Basel, Switzerland)

    2015  Volume 16, Issue 1

    Abstract: Measuring sedentary behaviour and physical activity with wearable sensors provides detailed information on activity patterns and can serve health interventions. At the basis of activity analysis stands the ability to distinguish sedentary from active ... ...

    Abstract Measuring sedentary behaviour and physical activity with wearable sensors provides detailed information on activity patterns and can serve health interventions. At the basis of activity analysis stands the ability to distinguish sedentary from active time. As there is no consensus regarding the optimal cut-point for classifying sedentary behaviour, we studied the consequences of using different cut-points for this type of analysis. We conducted a battery of sitting and walking activities with 14 office workers, wearing the Promove 3D activity sensor to determine the optimal cut-point (in counts per minute (m·s(-2))) for classifying sedentary behaviour. Then, 27 office workers wore the sensor for five days. We evaluated the sensitivity of five sedentary pattern measures for various sedentary cut-points and found an optimal cut-point for sedentary behaviour of 1660 × 10(-3) m·s(-2). Total sedentary time was not sensitive to cut-point changes within ±10% of this optimal cut-point; other sedentary pattern measures were not sensitive to changes within the ±20% interval. The results from studies analyzing sedentary patterns, using different cut-points, can be compared within these boundaries. Furthermore, commercial, hip-worn activity trackers can implement feedback and interventions on sedentary behaviour patterns, using these cut-points.
    MeSH term(s) Actigraphy/instrumentation ; Actigraphy/methods ; Adult ; Female ; Human Activities/classification ; Humans ; Male ; Middle Aged ; Monitoring, Ambulatory/instrumentation ; Monitoring, Ambulatory/methods ; Reference Standards ; Sedentary Behavior ; Workplace ; Young Adult
    Language English
    Publishing date 2015-12-25
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s16010022
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The effectiveness of the use of a digital activity coaching system in addition to a two-week home-based exercise program in patients after total knee arthroplasty: study protocol for a randomized controlled trial.

    Harmelink, Karen E M / Zeegers, A V C M / Tönis, Thijs M / Hullegie, Wim / Nijhuis-van der Sanden, Maria W G / Staal, J Bart

    BMC musculoskeletal disorders

    2017  Volume 18, Issue 1, Page(s) 290

    Abstract: Background: There is consistent evidence that supervised programs are not superior to home-based programs after total knee arthroplasty (TKA), especially in patients without complications. Home-based exercise programs are effective, but we hypothesize ... ...

    Abstract Background: There is consistent evidence that supervised programs are not superior to home-based programs after total knee arthroplasty (TKA), especially in patients without complications. Home-based exercise programs are effective, but we hypothesize that their effectiveness can be improved by increasing the adherence to physical therapy advice to reach an adequate exercise level during the program and thereafter. Our hypothesis is that an activity coaching system (accelerometer-based activity sensor), alongside a home-based exercise program, will increase adherence to exercises and the activity level, thereby improving physical functioning and recovery. The objective of this study is to determine the effectiveness of an activity coaching system in addition to a home-based exercise program after a TKA compared to only the home-based exercise program with physical functioning as outcome.
    Methods: This study is a single-blind randomized controlled trial. Both the intervention (n = 55) and the control group (n = 55) receive a two-week home-based exercise program, and the intervention group receives an additional activity coaching system. This is a hand-held electronic device together with an app on a smartphone providing information and advice on exercise behavior during the day. The primary outcome is physical functioning, measured with the Timed Up and Go test (TUG) after two weeks, six weeks and three months. Secondary outcomes are 1) adherence to the activity level (activity diary); 2) physical functioning, measured with the 2-Minute Walk Test (2MWT) and the Knee Osteoarthritis Outcome Score; 3) quality of life (SF-36); 4) healthcare use up to one year postoperatively and 5) cost-effectiveness. Data are collected preoperatively, three days, two and six weeks, three months and one year postoperatively.
    Discussion: The strengths of the study are the use of both performance-based tests and self-reported questionnaires and the personalized tailored program after TKA given by specialized physical therapists. Its weakness is the lack of blinding of the participants to treatment allocation. Outcomes are generalizable to uncomplicated patients as defined in the inclusion criteria.
    Trial registration: The trial is registered in the Dutch Trial Register ( www.trialregister.nl , NTR 5109) (March 22, 2015).
    Language English
    Publishing date 2017-07-05
    Publishing country England
    Document type Journal Article
    ISSN 1471-2474
    ISSN (online) 1471-2474
    DOI 10.1186/s12891-017-1647-5
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  3. Article ; Online: Optimal sensor placement for measuring physical activity with a 3D accelerometer.

    Boerema, Simone T / van Velsen, Lex / Schaake, Leendert / Tönis, Thijs M / Hermens, Hermie J

    Sensors (Basel, Switzerland)

    2014  Volume 14, Issue 2, Page(s) 3188–3206

    Abstract: Accelerometer-based activity monitors are popular for monitoring physical activity. In this study, we investigated optimal sensor placement for increasing the quality of studies that utilize accelerometer data to assess physical activity. We performed a ... ...

    Abstract Accelerometer-based activity monitors are popular for monitoring physical activity. In this study, we investigated optimal sensor placement for increasing the quality of studies that utilize accelerometer data to assess physical activity. We performed a two-staged study, focused on sensor location and type of mounting. Ten subjects walked at various walking speeds on a treadmill, performed a deskwork protocol, and walked on level ground, while simultaneously wearing five ProMove2 sensors with a snug fit on an elastic waist belt. We found that sensor location, type of activity, and their interaction-effect affected sensor output. The most lateral positions on the waist belt were the least sensitive for interference. The effect of mounting was explored, by making two subjects repeat the experimental protocol with sensors more loosely fitted to the elastic belt. The loose fit resulted in lower sensor output, except for the deskwork protocol, where output was higher. In order to increase the reliability and to reduce the variability of sensor output, researchers should place activity sensors on the most lateral position of a participant's waist belt. If the sensor hampers free movement, it may be positioned slightly more forward on the belt. Finally, sensors should be fitted tightly to the body.
    Language English
    Publishing date 2014-02-18
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s140203188
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Deviations in daily physical activity patterns in patients with the chronic fatigue syndrome: a case control study.

    Evering, Richard M H / Tönis, Thijs M / Vollenbroek-Hutten, Miriam M R

    Journal of psychosomatic research

    2011  Volume 71, Issue 3, Page(s) 129–135

    Abstract: Objectives: Deviations in daily physical activity patterns may play an important role in the development and maintenance of fatigue in the chronic fatigue syndrome (CFS). The aim of this study is to gain insight into the objective daily physical ... ...

    Abstract Objectives: Deviations in daily physical activity patterns may play an important role in the development and maintenance of fatigue in the chronic fatigue syndrome (CFS). The aim of this study is to gain insight into the objective daily physical activity pattern of patients with CFS in comparison with healthy controls. The secondary objective is studying the awareness in performing physical activities.
    Methods: The objective daily physical activity pattern was measured with a tri-axial accelerometer in 35 patients with CFS and in 35 age- and gender-matched healthy controls. The objective daily physical activity level and distribution of physical activities at low, medium and high intensity levels during the day were measured. Moreover, variability in performing physical activities within and between subjects was computed. Subjective ratings of self-reported daily physical activity levels were assessed at a visual analog scale.
    Results: CFS patients were significantly less physically active in the afternoon and evening, and spent fewer activities at high intensity levels and more at low intensity levels. Moreover, CFS patients showed more variability in their own physical activity pattern during the afternoon. The heterogeneity in the physical activity pattern between subjects within the CFS and control group did not differ. Finally, CFS patients were more aware about their daily physical activity level than healthy controls.
    Conclusion: CFS patients showed deviations in the objectively measured daily physical activity pattern. Future research should elucidate the relation between impaired balances in daily physical activity patterns and fatigue severity in CFS.
    MeSH term(s) Activities of Daily Living/psychology ; Adult ; Case-Control Studies ; Cognition ; Cross-Sectional Studies ; Fatigue Syndrome, Chronic/psychology ; Fatigue Syndrome, Chronic/rehabilitation ; Female ; Humans ; Male ; Motor Activity ; Pain Measurement ; Severity of Illness Index ; Time Factors
    Language English
    Publishing date 2011-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 80166-5
    ISSN 1879-1360 ; 0022-3999
    ISSN (online) 1879-1360
    ISSN 0022-3999
    DOI 10.1016/j.jpsychores.2011.04.004
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  5. Article ; Online: Co-creation of an ICT-supported cancer rehabilitation application for resected lung cancer survivors: design and evaluation.

    Timmerman, Josien G / Tönis, Thijs M / Dekker-van Weering, Marit G H / Stuiver, Martijn M / Wouters, Michel W J M / van Harten, Wim H / Hermens, Hermie J / Vollenbroek-Hutten, Miriam M R

    BMC health services research

    2016  Volume 16, Page(s) 155

    Abstract: Background: Lung cancer (LC) patients experience high symptom burden and significant decline of physical fitness and quality of life following lung resection. Good quality of survivorship care post-surgery is essential to optimize recovery and prevent ... ...

    Abstract Background: Lung cancer (LC) patients experience high symptom burden and significant decline of physical fitness and quality of life following lung resection. Good quality of survivorship care post-surgery is essential to optimize recovery and prevent unscheduled healthcare use. The use of Information and Communication Technology (ICT) can improve post-surgery care, as it enables frequent monitoring of health status in daily life, provides timely and personalized feedback to patients and professionals, and improves accessibility to rehabilitation programs. Despite its promises, implementation of telehealthcare applications is challenging, often hampered by non-acceptance of the developed service by its end-users. A promising approach is to involve the end-users early and continuously during the developmental process through a so-called user-centred design approach. The aim of this article is to report on this process of co-creation and evaluation of a multimodal ICT-supported cancer rehabilitation program with and for lung cancer patients treated with lung resection and their healthcare professionals (HCPs).
    Methods: A user-centered design approach was used. Through semi-structured interviews (n = 10 LC patients and 6 HCPs), focus groups (n = 5 HCPs), and scenarios (n = 5 HCPs), user needs and requirements were elicited. Semi-structured interviews and the System Usability Scale (SUS) were used to evaluate usability of the telehealthcare application with 7 LC patients and 10 HCPs.
    Results: The developed application consists of: 1) self-monitoring of symptoms and physical activity using on-body sensors and a smartphone, and 2) a web based physical exercise program. 71 % of LC patients and 78 % of HCPs were willing to use the application as part of lung cancer treatment. Accessibility of data via electronic patient records was essential for HCPs. LC patients regarded a positive attitude of the HCP towards the application essential. Overall, the usability (SUS median score = 70, range 35-95) was rated acceptable.
    Conclusions: A telehealthcare application that facilitates symptom monitoring and physical fitness training is considered a useful tool to further improve recovery following surgery of resected lung cancer (LC) patients. Involvement of end users in the design process appears to be necessary to optimize chances of adoption, compliance and implementation of telemedicine.
    MeSH term(s) Female ; Focus Groups ; Follow-Up Studies ; Humans ; Lung Neoplasms/psychology ; Lung Neoplasms/rehabilitation ; Male ; Middle Aged ; Patient Care Planning/trends ; Program Development ; Program Evaluation ; Quality of Life ; Survivors/psychology ; Survivors/statistics & numerical data ; Telemedicine/trends
    Language English
    Publishing date 2016-04-27
    Publishing country England
    Document type Journal Article
    ISSN 1472-6963
    ISSN (online) 1472-6963
    DOI 10.1186/s12913-016-1385-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Telemonitoring of Daily Activity and Symptom Behavior in Patients with COPD.

    Tabak, Monique / Vollenbroek-Hutten, Miriam M R / van der Valk, Paul D L P M / van der Palen, Job / Tönis, Thijs M / Hermens, Hermie J

    International journal of telemedicine and applications

    2012  Volume 2012, Page(s) 438736

    Abstract: Objectives. This study investigated the activity behavior of patients with COPD in detail compared to asymptomatic controls, and the relationship between subjective and objective activities (awareness), and readiness to change activity behavior. Methods. ...

    Abstract Objectives. This study investigated the activity behavior of patients with COPD in detail compared to asymptomatic controls, and the relationship between subjective and objective activities (awareness), and readiness to change activity behavior. Methods. Thirty-nine patients with COPD (66.0 years; FEV(1)% predicted: 44.9%) and 21 healthy controls (57.0 years) participated. Objective daily activity was assessed by accelerometry and expressed as amount of activity in counts per minute (cpm). Patients' baseline subjective activity and stage of change were assessed prior to measurements. Results. Mean daily activity in COPD patients was significantly lower compared to the healthy controls (864 ± 277 cpm versus 1162 ± 282 cpm, P < 0.001). COPD patients showed a temporary decrease in objective activities in the early afternoon. Objective and subjective activities were significantly moderately related and most patients (55.3%) were in the maintenance phase of the stages of change. Conclusions. COPD patients show a distinctive activity decrease in the early afternoon. COPD patients are moderately aware of their daily activity but regard themselves as physically active. Therefore, future telemedicine interventions might consider creating awareness of an active lifestyle and provide feedback that aims to increase and balance activity levels.
    Language English
    Publishing date 2012-11-25
    Publishing country Egypt
    Document type Journal Article
    ZDB-ID 2397787-5
    ISSN 1687-6423 ; 1687-6415
    ISSN (online) 1687-6423
    ISSN 1687-6415
    DOI 10.1155/2012/438736
    Database MEDical Literature Analysis and Retrieval System OnLINE

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