Evidence map›Paper›PMID 25889811›Full record

ArticleBiomedical engineering online2015

Identifying typical physical activity on smartphone with varying positions and orientations.

Fen Miao, Yi He, Jinlei Liu, Ye Li, Idowu Ayoola

Abstract readComparative Study
In one paragraph

Article in Biomedical engineering online, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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

12 citing papers in PubMed.

  1. Article
  2. LightGBM-Based Human Action Recognition Using Sensors.Sensors (Basel, Switzerland) · 2025
    Article
  3. X-CHAR: A Concept-based Explainable Complex Human Activity Recognition Model.Proceedings of the ACM on interactive, mobile, wearable and ubiquitous technologies · 2023
    Article
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  7. Review
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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

5 authors.

Fen MiaoThe Key Lab for Health Informatics of Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China. fen.miao@siat.ac.cn.
Yi HeHigh-field Magnetic Resonance Department, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany. yi.he@tuebingen.mpg.de.
Jinlei LiuThe Key Lab for Health Informatics of Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China. 2007liujinlei@163.com.
Ye LiThe Key Lab for Health Informatics of Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China. ye.li@siat.ac.cn.
Idowu AyoolaIndustrial Design, Technische Universiteit Eindhoven, 5612, Eindhoven, AZ, the Netherlands. i.b.i.ayoola@tue.nl.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTraditional activity recognition solutions are not widely applicable due to a high cost and inconvenience to use with numerous sensors. This paper aims to automatically recognize physical activity with the help of the built-in sensors of the widespread smartphone without any limitation of firm attachment to the human body.

methodsBy introducing a method to judge whether the phone is in a pocket, we investigated the data collected from six positions of seven subjects, chose five signals that are insensitive to orientation for activity classification. Decision trees (J48), Naive Bayes and Sequential minimal optimization (SMO) were employed to recognize five activities: static, walking, running, walking upstairs and walking downstairs.

resultsThe experimental results based on 8,097 activity data demonstrated that the J48 classifier produced the best performance with an average recognition accuracy of 89.6% during the three classifiers, and thus would serve as the optimal online classifier.

conclusionsThe utilization of the built-in sensors of the smartphone to recognize typical physical activities without any limitation of firm attachment is feasible.

Indexed as

Motor ActivitySmartphoneAccelerationActigraphyAdultBody Mass IndexClothingDecision TreesFemaleGravitationHumansLightMagneticsMalePostureReference Values

Identifiers

PMID25889811
PMCPMC4407791

What OpenQuestion holds

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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.