Evidence map›Paper›PMID 28818819›Full record

ArticleJMIR mHealth and uHealth2017

Quantifying Human Movement Using the Movn Smartphone App: Validation and Field Study.

Ralph Maddison, Luke Gemming, Javier Monedero, Linda Bolger, Sarahjane Belton, Johann Issartel, Samantha Marsh, Artur Direito, Madeleine Solenhill, Jinfeng Zhao and 3 more

Open access · goldAbstract read
In one paragraph

Article in JMIR mHealth and uHealth, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
7.9field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 5 institutions in 5 countries.

Ralph Maddison *Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Burwood, Australia.ORCID http://orcid.org/0000-0001-8564-5518
Luke Gemming *National Institute for Health Innovation, School of Population Health, University of Auckland, Auckland, New Zealand.ORCID http://orcid.org/0000-0003-2884-5753
Javier Monedero *School of Health & Human Performance, Dublin City University, Dublin, Ireland.ORCID http://orcid.org/0000-0002-3091-3375
Linda Bolger *School of Health & Human Performance, Dublin City University, Dublin, Ireland.ORCID http://orcid.org/0000-0002-8142-6841
Sarahjane Belton *School of Health & Human Performance, Dublin City University, Dublin, Ireland.ORCID http://orcid.org/0000-0001-9672-6276
Johann Issartel *School of Health & Human Performance, Dublin City University, Dublin, Ireland.ORCID http://orcid.org/0000-0003-1016-1409
Samantha Marsh *National Institute for Health Innovation, School of Population Health, University of Auckland, Auckland, New Zealand.ORCID http://orcid.org/0000-0001-8129-0350
Artur Direito *National Institute for Health Innovation, School of Population Health, University of Auckland, Auckland, New Zealand.ORCID http://orcid.org/0000-0002-2236-8506
Madeleine Solenhill *Center of Research on Welfare Health and Sport, School of Health and Welfare, Halmstad University, Halmstad, Sweden.ORCID http://orcid.org/0000-0002-4144-4877
Jinfeng Zhao *Department of Epidemiology and Biostatistics, School of Population Health, University of Auckland, Auckland, New Zealand.ORCID http://orcid.org/0000-0002-8458-8379
Daniel John Exeter *Department of Epidemiology and Biostatistics, School of Population Health, University of Auckland, Auckland, New Zealand.ORCID http://orcid.org/0000-0003-1061-5925
Harshvardhan Vathsangam *Robotic Embedded Systems Laboratory, Robotics and Autonomous Systems Center, University of Southern California, Los Angeles, CA, United States.ORCID http://orcid.org/0000-0001-8178-5580
Jonathan Charles Rawstorn *Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Burwood, Australia.ORCID http://orcid.org/0000-0002-9755-7993
University of Auckland · NZDublin City University · IEDeakin University · AUHalmstad University · SEUniversity of Southern California · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe use of embedded smartphone sensors offers opportunities to measure physical activity (PA) and human movement. Big data-which includes billions of digital traces-offers scientists a new lens to examine PA in fine-grained detail and allows us to track people's geocoded movement patterns to determine their interaction with the environment.

objectiveThe objective of this study was to examine the validity of the Movn smartphone app (Moving Analytics) for collecting PA and human movement data.

methodsThe criterion and convergent validity of the Movn smartphone app for estimating energy expenditure (EE) were assessed in both laboratory and free-living settings, compared with indirect calorimetry (criterion reference) and a stand-alone accelerometer that is commonly used in PA research (GT1m, ActiGraph Corp, convergent reference). A supporting cross-validation study assessed the consistency of activity data when collected across different smartphone devices. Global positioning system (GPS) and accelerometer data were integrated with geographical information software to demonstrate the feasibility of geospatial analysis of human movement.

resultsA total of 21 participants contributed to linear regression analysis to estimate EE from Movn activity counts (standard error of estimation [SEE]=1.94 kcal/min). The equation was cross-validated in an independent sample (N=42, SEE=1.10 kcal/min). During laboratory-based treadmill exercise, EE from Movn was comparable to calorimetry (bias=0.36 [-0.07 to 0.78] kcal/min, t

conclusionsThe Movn smartphone app can provide valid passive measurement of EE and can enrich these data with contextualizing temporospatial information. Although enhanced understanding of geographic and temporal variation in human movement patterns could inform intervention development, it also presents challenges for data processing and analytics.

Indexed as

geographic information systemshumanslocomotionphysical activitysmartphonetelemedicinevalidation studies

Identifiers

PMID28818819
PMCPMC5579324
OpenAlexW2746197122

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.