Erfassung körperlicher Aktivität mittels ­Akzelerometrie – Möglichkeiten und Grenzen aus technischer Sicht

Hey, Stefan; Αναστασοπούλου, Παναγιώτα; Haaren, Birte von

doi:10.1055/s-0034-1387721

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…The accelerometer continuously assesses data regarding participants’ acceleration in all three geometric axes, context temperature and air pressure. 79 This will allow to examine individual levels of physical activity and energy expenditure during the ambulatory assessment period.…”

Section: Methods and Analysesmentioning

confidence: 99%

Cognitive control and daily affect regulation in major depression and borderline personality disorder: protocol for an experimental ambulatory assessment study in Berlin, Germany

Schulze

Bürkner²,

Bohländer

et al. 2018

BMJ Open

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IntroductionAffective disturbances and difficulty in affect regulation are core features of major depressive disorder (MDD) as well as borderline personality disorder (BPD). Whereas depressed individuals are characterised by affective inertia, individuals with BPD are characterised by affective instability. Both groups have been found to use more maladaptive affect regulation strategies than healthy controls. Surprisingly, however, there have been hardly any studies directly comparing these two disorders to disentangle shared and disorder-specific deficits in affective dynamics and affect regulation.Furthermore, theoretical models link deficits in affect regulation to deficits in cognitive control functions. Given that individuals with MDD or BPD are both characterised by impairments in cognitive control, the present study will further examine the link between individual differences in cognitive control and disturbances in affect dynamics and regulation in the daily life of individuals with MDD or BPD.Methods and analysesWe will use a smartphone application to assess negative and positive affect as well as affect regulation strategies at eight times a day for 7 days. We will further employ four computerised tasks to assess two cognitive control functions, namely interference control and discarding irrelevant information from working memory. Our hypotheses will be tested using a multimethod approach. Power analyses determined a sample size of 159 (53 MDD, 53 BPD, 53 controls) to detect medium effect sizes.Ethics and disseminationEthics approval has been obtained from the Freie Universität Berlin. Data collection started in January 2017 and will last until the end of 2018. Results will be disseminated to relevant psychotherapeutic and patient communities in peer-reviewed journals, and at scientific conferences.

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Section: Methods and Analysesmentioning

confidence: 99%

Cognitive control and daily affect regulation in major depression and borderline personality disorder: protocol for an experimental ambulatory assessment study in Berlin, Germany

Schulze

Bürkner²,

Bohländer

et al. 2018

BMJ Open

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“…Different studies have shown the significant and partly heavy underestimation (30-50%) of EE of walking upstairs or uphill [5,7,11] as well as overestimation of walking downhill (up to 50%) [6,12]. According to Hey et al, this non-linear coherence between acceleration data and energy expenditure leads to inadequate results [13].…”

Section: Introductionmentioning

confidence: 99%

Energy Expenditure During Incline Walking – Benefits of Integrating a Barometer into Activity Monitors

Manuel¹,

Αναστασοπούλου²,

Stefan³

et al. 2018

AJSS

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Objective: This study aimed to compare different methods to determine energy expenditure (EE) on incline walking. Approach: The methods tested were a conventional triaxial accelerometer (GT3X), a versatile system (SenseWear), both utilizing single regression models, and a device equipped with a triaxial accelerometer and an air pressure sensor (move II). Twenty-five healthy participants wore the activity monitors and a portable indirect calorimeter (IC) as reference while walking up-and downhill as well as up-and downstairs. The accuracy of the three devices for estimating EE was assessed based on Pearson correlation, ICC, and Bland-Altman analysis. Main results: For GT3X and SenseWear the ICCs showed a weak correlation (between 0.42 and 0.08) and for move II a strong correlation (between 0.97 and 0.84) between the prediction of energy cost and the output from IC, respectively. Overall, the differences absolute to the IC values were 11 to 35 (12 to 30) times higher for the GT3X (SenseWear) than for the move II devices. Significance: The study showed that a device equipped with an accelerometer and an air pressure sensor had higher accuracy in predicting EE during incline walking than a conventional accelerometer or a versatile system.

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“…Accelerometers are the most commonly used wearable devices to quantify everyday life motor activity in clinical trials and clinical practice [ 6 , 7 ]. Conventional outcome measures of accelerometers are activity counts as well as intensity levels and energy expenditure estimations based on cut-points of these counts [ 8 ]. These measures provide relevant information about whole-body physical activity, but they are non-specific and cannot determine movement patterns and types of activities performed [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Systematic review on the application of wearable inertial sensors to quantify everyday life motor activity in people with mobility impairments

Rast

Labruyère

2020

J NeuroEngineering Rehabil

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Background Recent advances in wearable sensor technologies enable objective and long-term monitoring of motor activities in a patient’s habitual environment. People with mobility impairments require appropriate data processing algorithms that deal with their altered movement patterns and determine clinically meaningful outcome measures. Over the years, a large variety of algorithms have been published and this review provides an overview of their outcome measures, the concepts of the algorithms, the type and placement of required sensors as well as the investigated patient populations and measurement properties. Methods A systematic search was conducted in MEDLINE, EMBASE, and SCOPUS in October 2019. The search strategy was designed to identify studies that (1) involved people with mobility impairments, (2) used wearable inertial sensors, (3) provided a description of the underlying algorithm, and (4) quantified an aspect of everyday life motor activity. The two review authors independently screened the search hits for eligibility and conducted the data extraction for the narrative review. Results Ninety-five studies were included in this review. They covered a large variety of outcome measures and algorithms which can be grouped into four categories: (1) maintaining and changing a body position, (2) walking and moving, (3) moving around using a wheelchair, and (4) activities that involve the upper extremity. The validity or reproducibility of these outcomes measures was investigated in fourteen different patient populations. Most of the studies evaluated the algorithm’s accuracy to detect certain activities in unlabeled raw data. The type and placement of required sensor technologies depends on the activity and outcome measure and are thoroughly described in this review. The usability of the applied sensor setups was rarely reported. Conclusion This systematic review provides a comprehensive overview of applications of wearable inertial sensors to quantify everyday life motor activity in people with mobility impairments. It summarizes the state-of-the-art, it provides quick access to the relevant literature, and it enables the identification of gaps for the evaluation of existing and the development of new algorithms.

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Erfassung körperlicher Aktivität mittels Akzelerometrie – Möglichkeiten und Grenzen aus technischer Sicht

Cited by 4 publications

References 3 publications

Cognitive control and daily affect regulation in major depression and borderline personality disorder: protocol for an experimental ambulatory assessment study in Berlin, Germany

Cognitive control and daily affect regulation in major depression and borderline personality disorder: protocol for an experimental ambulatory assessment study in Berlin, Germany

Energy Expenditure During Incline Walking – Benefits of Integrating a Barometer into Activity Monitors

Systematic review on the application of wearable inertial sensors to quantify everyday life motor activity in people with mobility impairments

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Erfassung körperlicher Aktivität mittels ­Akzelerometrie – Möglichkeiten und Grenzen aus technischer Sicht

Cited by 4 publications

References 3 publications

Cognitive control and daily affect regulation in major depression and borderline personality disorder: protocol for an experimental ambulatory assessment study in Berlin, Germany

Cognitive control and daily affect regulation in major depression and borderline personality disorder: protocol for an experimental ambulatory assessment study in Berlin, Germany

Energy Expenditure During Incline Walking – Benefits of Integrating a Barometer into Activity Monitors

Systematic review on the application of wearable inertial sensors to quantify everyday life motor activity in people with mobility impairments

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Erfassung körperlicher Aktivität mittels Akzelerometrie – Möglichkeiten und Grenzen aus technischer Sicht