The inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies.
<h4>Purpose</h4>The present study evaluates the intra- and inter-unit variability of the GlobalSat® DG100 GPS data logger/receiver (DG100) when estimating outdoor walking distances and speeds.<h4>Methods</h4>Two experiments were performed using healthy subjects walking on a 4...
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2012
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oai:doaj.org-article:abc20767bd344c919b75ffcc5c86d65b2021-11-18T07:27:33ZThe inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies.1932-620310.1371/journal.pone.0031338https://doaj.org/article/abc20767bd344c919b75ffcc5c86d65b2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22363623/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Purpose</h4>The present study evaluates the intra- and inter-unit variability of the GlobalSat® DG100 GPS data logger/receiver (DG100) when estimating outdoor walking distances and speeds.<h4>Methods</h4>Two experiments were performed using healthy subjects walking on a 400 m outdoor synthetic track. The two experiments consisted of two different outdoor prescribed walking protocols with distances ranging from 50 to 400 m. Experiment 1 examined the intra-unit variability of the DG100 (test-retest reproducibility) when estimating walking distances. Experiment 2 examined the inter-unit variability of four DG100 devices (unit to unit variability) when estimating walking distances and speeds.<h4>Results</h4>The coefficient of variation [95% confidence interval], for the reliability of estimating walking distances, was 2.8 [2.5-3.2] %. The inter-unit variability among the four DG100 units tested ranged from 2.8 [2.5-3.2] % to 3.9 [3.5-4.4] % when estimating distances and from 2.7 [2.4-3.0] % to 3.8 [3.4-4.2] % when estimating speeds.<h4>Conclusion</h4>The present study indicates that the DG100, an economical and convenient GPS data logger/receiver, can be reliably used to study human outdoor walking activities in unobstructed conditions. This device let facilitate the use of GPS in studies of health and disease.Pierre AbrahamBénédicte Noury-DesvauxMarie GernigonGuillaume MahéThomas SauvagetGeorges LeftheriotisAlexis Le FaucheurPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 2, p e31338 (2012) |
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Medicine R Science Q |
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Medicine R Science Q Pierre Abraham Bénédicte Noury-Desvaux Marie Gernigon Guillaume Mahé Thomas Sauvaget Georges Leftheriotis Alexis Le Faucheur The inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies. |
| description |
<h4>Purpose</h4>The present study evaluates the intra- and inter-unit variability of the GlobalSat® DG100 GPS data logger/receiver (DG100) when estimating outdoor walking distances and speeds.<h4>Methods</h4>Two experiments were performed using healthy subjects walking on a 400 m outdoor synthetic track. The two experiments consisted of two different outdoor prescribed walking protocols with distances ranging from 50 to 400 m. Experiment 1 examined the intra-unit variability of the DG100 (test-retest reproducibility) when estimating walking distances. Experiment 2 examined the inter-unit variability of four DG100 devices (unit to unit variability) when estimating walking distances and speeds.<h4>Results</h4>The coefficient of variation [95% confidence interval], for the reliability of estimating walking distances, was 2.8 [2.5-3.2] %. The inter-unit variability among the four DG100 units tested ranged from 2.8 [2.5-3.2] % to 3.9 [3.5-4.4] % when estimating distances and from 2.7 [2.4-3.0] % to 3.8 [3.4-4.2] % when estimating speeds.<h4>Conclusion</h4>The present study indicates that the DG100, an economical and convenient GPS data logger/receiver, can be reliably used to study human outdoor walking activities in unobstructed conditions. This device let facilitate the use of GPS in studies of health and disease. |
| format |
article |
| author |
Pierre Abraham Bénédicte Noury-Desvaux Marie Gernigon Guillaume Mahé Thomas Sauvaget Georges Leftheriotis Alexis Le Faucheur |
| author_facet |
Pierre Abraham Bénédicte Noury-Desvaux Marie Gernigon Guillaume Mahé Thomas Sauvaget Georges Leftheriotis Alexis Le Faucheur |
| author_sort |
Pierre Abraham |
| title |
The inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies. |
| title_short |
The inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies. |
| title_full |
The inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies. |
| title_fullStr |
The inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies. |
| title_full_unstemmed |
The inter- and intra-unit variability of a low-cost GPS data logger/receiver to study human outdoor walking in view of health and clinical studies. |
| title_sort |
inter- and intra-unit variability of a low-cost gps data logger/receiver to study human outdoor walking in view of health and clinical studies. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2012 |
| url |
https://doaj.org/article/abc20767bd344c919b75ffcc5c86d65b |
| work_keys_str_mv |
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