Quantifying Habitual Levels of Physical Activity According to Impact in Older People: Accelerometry Protocol for the VIBE Study

Kevin C Deere; Kimberly Hannam; Jessica Coulson; Alex Ireland; Jamie S McPhee; Charlotte Moss; Mark H Edwards; Elaine Dennison; Cyrus Cooper; Adrian Sayers; Matthijs Lipperts; Bernd Grimm; Jon H Tobias

doi:10.1123/japa.2015-0066

Quantifying Habitual Levels of Physical Activity According to Impact in Older People: Accelerometry Protocol for the VIBE Study

Kevin C Deere, Kimberly Hannam, Jessica Coulson, Alex Ireland, Jamie S McPhee, Charlotte Moss, Mark H Edwards, Elaine Dennison, Cyrus Cooper, Adrian Sayers, Matthijs Lipperts, Bernd Grimm, Jon H Tobias

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Abstract

BACKGROUND: Physical activity (PA) may need to produce high impacts to be osteogenic.

AIMS: to identify threshold(s) for defining high impact PA for future analyses in the VIBE (Vertical Impact and Bone in the Elderly) study, based on home recordings with triaxial accelerometers.

METHODS: Recordings were obtained from 19 Master Athlete Cohort (MAC; mean 67.6 years) and 15 Hertfordshire Cohort Study (HCS; mean 77.7 years) participants. Data cleaning protocols were developed to exclude artefacts. Accelerations expressed in g units were categorised into three bands selected from the distribution of positive Y-axis peak accelerations.

RESULTS: Data was available for 6.6 and 4.4 days from MAC and HCS participants respectively, with approximately 14 hours recording daily. Three-fold more 0.5-1.0g impacts were observed in MAC versus HCS, 20 fold more 1.0-1.5g impacts, and 140 fold more impacts >1.5g.

CONCLUSIONS: Our analysis protocol successfully distinguishes PA levels in active and sedentary older individuals.

Original language	English
Article number	24
Pages (from-to)	290-295
Number of pages	6
Journal	Journal of Aging and Physical Activity
Volume	24
Issue number	2
DOIs	https://doi.org/10.1123/japa.2015-0066
Publication status	Published - Apr 2015

Keywords

peak g
accelerometry
VIBE

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15.JAPA.2015-0066_Deere
This is the final published version of the article (version of record). It first appeared online via Human Kinetics at http://journals.humankinetics.com/japa-back-issues/japa-volume-24-issue-2-april/quantifying-habitual-levels-of-physical-activity-according-to-impact-in-older-people-accelerometry-protocol-for-the-vibe-study. Please refer to any applicable terms of use of the publisher.
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Lifelong Health & Wellbeing Scheme: Describing habitual levels of physical activity (PA) in older people in terms of impact loads and how this relates to bone and other systems
Tobias, J. H. (Principal Investigator)
1/10/13 → 30/09/17
Project: Research, Parent
Lifelong Health & Wellbeing
Tobias, J. H. (Principal Investigator)
1/10/13 → 30/09/17
Project: Research

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Deere, K. C., Hannam, K., Coulson, J., Ireland, A., McPhee, J. S., Moss, C., Edwards, M. H., Dennison, E., Cooper, C., Sayers, A., Lipperts, M., Grimm, B., & Tobias, J. H. (2015). Quantifying Habitual Levels of Physical Activity According to Impact in Older People: Accelerometry Protocol for the VIBE Study. Journal of Aging and Physical Activity, 24(2), 290-295. Article 24. https://doi.org/10.1123/japa.2015-0066

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title = "Quantifying Habitual Levels of Physical Activity According to Impact in Older People: Accelerometry Protocol for the VIBE Study",

abstract = "BACKGROUND: Physical activity (PA) may need to produce high impacts to be osteogenic.AIMS: to identify threshold(s) for defining high impact PA for future analyses in the VIBE (Vertical Impact and Bone in the Elderly) study, based on home recordings with triaxial accelerometers.METHODS: Recordings were obtained from 19 Master Athlete Cohort (MAC; mean 67.6 years) and 15 Hertfordshire Cohort Study (HCS; mean 77.7 years) participants. Data cleaning protocols were developed to exclude artefacts. Accelerations expressed in g units were categorised into three bands selected from the distribution of positive Y-axis peak accelerations.RESULTS: Data was available for 6.6 and 4.4 days from MAC and HCS participants respectively, with approximately 14 hours recording daily. Three-fold more 0.5-1.0g impacts were observed in MAC versus HCS, 20 fold more 1.0-1.5g impacts, and 140 fold more impacts >1.5g.CONCLUSIONS: Our analysis protocol successfully distinguishes PA levels in active and sedentary older individuals.",

keywords = "peak g, accelerometry, VIBE",

author = "Deere, {Kevin C} and Kimberly Hannam and Jessica Coulson and Alex Ireland and McPhee, {Jamie S} and Charlotte Moss and Edwards, {Mark H} and Elaine Dennison and Cyrus Cooper and Adrian Sayers and Matthijs Lipperts and Bernd Grimm and Tobias, {Jon H}",

year = "2015",

month = apr,

doi = "10.1123/japa.2015-0066",

language = "English",

volume = "24",

pages = "290--295",

journal = "Journal of Aging and Physical Activity",

issn = "1063-8652",

publisher = "Human Kinetics",

number = "2",

}

Deere, KC, Hannam, K, Coulson, J, Ireland, A, McPhee, JS, Moss, C, Edwards, MH, Dennison, E, Cooper, C, Sayers, A, Lipperts, M, Grimm, B & Tobias, JH 2015, 'Quantifying Habitual Levels of Physical Activity According to Impact in Older People: Accelerometry Protocol for the VIBE Study', Journal of Aging and Physical Activity, vol. 24, no. 2, 24, pp. 290-295. https://doi.org/10.1123/japa.2015-0066

TY - JOUR

T1 - Quantifying Habitual Levels of Physical Activity According to Impact in Older People

T2 - Accelerometry Protocol for the VIBE Study

AU - Deere, Kevin C

AU - Hannam, Kimberly

AU - Coulson, Jessica

AU - Ireland, Alex

AU - McPhee, Jamie S

AU - Moss, Charlotte

AU - Edwards, Mark H

AU - Dennison, Elaine

AU - Cooper, Cyrus

AU - Sayers, Adrian

AU - Lipperts, Matthijs

AU - Grimm, Bernd

AU - Tobias, Jon H

PY - 2015/4

Y1 - 2015/4

N2 - BACKGROUND: Physical activity (PA) may need to produce high impacts to be osteogenic.AIMS: to identify threshold(s) for defining high impact PA for future analyses in the VIBE (Vertical Impact and Bone in the Elderly) study, based on home recordings with triaxial accelerometers.METHODS: Recordings were obtained from 19 Master Athlete Cohort (MAC; mean 67.6 years) and 15 Hertfordshire Cohort Study (HCS; mean 77.7 years) participants. Data cleaning protocols were developed to exclude artefacts. Accelerations expressed in g units were categorised into three bands selected from the distribution of positive Y-axis peak accelerations.RESULTS: Data was available for 6.6 and 4.4 days from MAC and HCS participants respectively, with approximately 14 hours recording daily. Three-fold more 0.5-1.0g impacts were observed in MAC versus HCS, 20 fold more 1.0-1.5g impacts, and 140 fold more impacts >1.5g.CONCLUSIONS: Our analysis protocol successfully distinguishes PA levels in active and sedentary older individuals.

AB - BACKGROUND: Physical activity (PA) may need to produce high impacts to be osteogenic.AIMS: to identify threshold(s) for defining high impact PA for future analyses in the VIBE (Vertical Impact and Bone in the Elderly) study, based on home recordings with triaxial accelerometers.METHODS: Recordings were obtained from 19 Master Athlete Cohort (MAC; mean 67.6 years) and 15 Hertfordshire Cohort Study (HCS; mean 77.7 years) participants. Data cleaning protocols were developed to exclude artefacts. Accelerations expressed in g units were categorised into three bands selected from the distribution of positive Y-axis peak accelerations.RESULTS: Data was available for 6.6 and 4.4 days from MAC and HCS participants respectively, with approximately 14 hours recording daily. Three-fold more 0.5-1.0g impacts were observed in MAC versus HCS, 20 fold more 1.0-1.5g impacts, and 140 fold more impacts >1.5g.CONCLUSIONS: Our analysis protocol successfully distinguishes PA levels in active and sedentary older individuals.

KW - peak g

KW - accelerometry

KW - VIBE

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DO - 10.1123/japa.2015-0066

M3 - Article (Academic Journal)

C2 - 26372670

SN - 1063-8652

VL - 24

SP - 290

EP - 295

JO - Journal of Aging and Physical Activity

JF - Journal of Aging and Physical Activity

IS - 2

M1 - 24

ER -

Quantifying Habitual Levels of Physical Activity According to Impact in Older People: Accelerometry Protocol for the VIBE Study

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Lifelong Health & Wellbeing Scheme: Describing habitual levels of physical activity (PA) in older people in terms of impact loads and how this relates to bone and other systems

Lifelong Health & Wellbeing

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