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Defining accelerometer cut-points for different intensity levels in motor-complete spinal cord injury.
Karolinska Institutet, Stockholm, Sweden.
Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, Åstrandlaboratoriet.ORCID-id: 0000-0002-3901-7833
Karolinska Institutet, Stockholm, Sweden.
Karolinska Institutet, Stockholm, Sweden.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Spinal Cord, ISSN 1362-4393, E-ISSN 1476-5624Artikkel i tidsskrift (Fagfellevurdert) Epub ahead of print
Abstract [en]

STUDY DESIGN: Descriptive.

OBJECTIVE: The present aim was to define accelerometer cut-point values for wrist-worn accelerometers to identify absolute- and relative-intensity physical activity (PA) levels in people with motor-complete paraplegics (PP) and tetraplegics (TP).

SETTINGS: Rehabilitation facility in Sweden.

METHODS: The participants were 26 (19 men, 7 women) with C5-C8, AIS A and B (TP) and 37 (27 men, 10 women) with T7-T12 (PP), AIS A and B. Wrist-worn accelerometer recordings (Actigraph GT3X+) were taken during seven standardized activities. Oxygen consumption was measured, as well as at-rest and peak effort, with indirect calorimetry. Accelerometer cut-points for absolute and relative intensities were defined using ROC-curve analyses.

RESULTS: The ROC-curve analyses for accelerometer cut-points revealed good-to-excellent accuracy (AUC >0.8), defining cut-points for absolute intensity (2, 3, 4, 5, 6, 7 METs for PP and 2 to 6 METs for TP) and relative intensity (30, 40, 50, 60, 70, and 80% for PP and 40-80% for TP). The cut-points for moderate-to-vigorous physical activity was defined as ≥9515 vector magnitude counts per minute (VMC) for PP and ≥4887 VMC/min for TP.

CONCLUSION: This study presents cut-points for wrist-worn accelerometers in both PP and TP, which could be used in clinical practice to describe physical activity patterns and time spent at different intensity levels.

sted, utgiver, år, opplag, sider
Nature Publishing Group, 2019.
HSV kategori
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Medicin/Teknik
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URN: urn:nbn:se:gih:diva-5806DOI: 10.1038/s41393-019-0308-yPubMedID: 31243318OAI: oai:DiVA.org:gih-5806DiVA, id: diva2:1342826
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Energiomsättning hos ryggmärgsskadadeTilgjengelig fra: 2019-08-14 Laget: 2019-08-14 Sist oppdatert: 2019-08-14bibliografisk kontrollert

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