Evidence map›Paper›PMID 33050174›Full record

ArticleSensors (Basel, Switzerland)2020

Validity of a Local Positioning System during Outdoor and Indoor Conditions for Team Sports.

Prisca S Alt, Christian Baumgart, Olaf Ueberschär, Jürgen Freiwald, Matthias W Hoppe

Abstract readLetter
In one paragraph

Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 pooled it
–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

19 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. The impact of exercise on spinal posture in adolescents: a systematic review.Revista paulista de pediatria : orgao oficial da Sociedade de Pediatria de Sao Paulo · 2025
    Pooled it
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  18. Time-Motion Analysis by Playing Positions of Male Handball Players during the European Championship 2020.International journal of environmental research and public health · 2021
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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.

Prisca S AltDepartment of Orthopaedic and Traumatic Surgery, Clinic Braunschweig, 38118 Braunschweig, Germany.
Christian BaumgartDepartment of Movement and Training Science, University of Wuppertal, 42119 Wuppertal, Germany.ORCID 0000-0001-6258-3537
Olaf UeberschärDepartment of Engineering and Industrial Design, Magdeburg-Stendal University of Applied Sciences, 39114 Magdeburg, Germany.ORCID 0000-0002-6822-5201
Jürgen FreiwaldDepartment of Movement and Training Science, University of Wuppertal, 42119 Wuppertal, Germany.
Matthias W HoppeInstitute of Movement and Training Science I, University of Leipzig, 04109 Leipzig, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to compare the validity of a local positioning system (LPS) during outdoor and indoor conditions for team sports. The impact of different filtering techniques was also investigated. Five male team sport athletes (age: 27 ± 2 years; maximum oxygen uptake: 48.4 ± 5.1 mL/min/kg) performed 10 trials on a team sport-specific circuit on an artificial turf and in a sports hall. During the circuit, athletes wore two devices of a recent 20-Hz LPS. From the reported raw and differently filtered velocity data, distances covered during different walking, jogging, and sprinting sections within the circuit were computed for which the circuit was equipped with double-light timing gates as criterion measures. The validity was determined by comparing the known and measured distances via the relative typical error of estimate (TEE). The LPS validity for measuring distances covered was good to moderate during both environments (TEE: 0.9-7.1%), whereby the outdoor validity (TEE: 0.9-6.4%) was superior than indoor validity (TEE: 1.2-7.1%). During both environments, validity outcomes of an unknown manufacturer filter were superior (TEE: 0.9-6.2%) compared to those of a standard Butterworth filter (TEE: 0.9-6.4%) and to unprocessed raw data (TEE: 1.0-7.1%). Our findings show that the evaluated LPS can be considered as a good to moderately valid tracking technology to assess running-based movement patterns in team sports during outdoor and indoor conditions. However, outdoor was superior to indoor validity, and also impacted by the applied filtering technique. Our outcomes should be considered for practical purposes like match and training analyses in team sport environments.

Indexed as

Athletic PerformanceOxygen ConsumptionRunningTeam SportsAdultGeographic Information SystemsHumansMaleOxygenOxygenaccelerationaccuracyfootballhandballplayer tracking technologysoccer

Identifiers

PMID33050174
PMCPMC7601858

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.