ArticlePloS one2021
Generation and validation of ActiGraph GT3X+ accelerometer cut-points for assessing physical activity intensity in older adults. The OUTDOOR ACTIVE validation study.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06057428 (Activity Levels Amongst Elderly Patients With Symptomatic Lumbar Spinal Stenosis Before and After Decompressive Surgery), which is not on this map. Cited by 36 papers, 2 of them syntheses that pooled it.
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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.
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.
Activity Levels Amongst Elderly Patients With Symptomatic Lumbar Spinal Stenosis Before and After Decompressive Surgery
Who cites it
36 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Comparing national device-based physical activity surveillance systems: a systematic review.The international journal of behavioral nutrition and physical activity · 2024Pooled it
- Machine Learning Applications for In-School Physical Activity Data Using IMUs in Children and Adolescents: A Systematic Review for Health Promotion.Journal of primary care & community healthPooled it
- Real-world data capture of daily limb loading using force-sensing insoles: Feasibility and lessons learned.Journal of biomechanics · 2024Trial
- The effects of a real-life lifestyle program on physical activity and objective and subjective sleep in adults aged 55+ years.BMC public health · 2022Trial
- Clustering-Based Accelerometer Measures of Physical Activity Patterns in Children With Overweight or Obesity: Baseline Cross-Sectional Methodological Analysis.JMIR formative research · 2026Article
- Objective assessment of physical activity using wearable devices in patients with mild-to-moderate Crohn's disease.Journal of the Canadian Association of Gastroenterology · 2026Article
- Similar negative effects of fatigue on physical activity in persons with rheumatoid arthritis and healthy controls: results of a cross-sectional patient-control study.EULAR rheumatology open · 2026Article
- Multidimensional associations of physical performance, balance, wellness and daily activities with frailty in older adults with coexisting frailty and diabetes.Journal of clinical nursing · 2026Article
- OpenMetabolics: Estimating energy expenditure using a smartphone worn in a pocket.Communications engineering · 2026Article
- Associations Between Quality of Life, Functional Fitness, Body Composition, and Accelerometer-Measured Physical Activity in Postmenopausal Women: A Cross-Sectional Study.Sports (Basel, Switzerland) · 2026Article
- A Digital Health Framework to Assess Glycemia and Physical Activity in Kidney Transplant Candidates: A Pilot Study.Transplantation direct · 2026Article
- Article
- Association of 24-hour movement guideline adherence with inhibitory control in older adults: the mediating role of general self-efficacy.Frontiers in psychology · 2026Article
- Comparisons of hip-worn and ankle-worn accelerometers on measuring physical activity and their correlations with perceived activity level in community-dwelling older adults.Gait & posture · 2026Article
- Disturbed rest-activity rhythm in Parkinson's disease: Associations with motor severity and orthostatic hypotension.Journal of Parkinson's disease · 2025Article
- Physical and Physiological Characterization of Custom-Made Virtual Reality Exergames: A Pilot Study.Sports (Basel, Switzerland) · 2025Article
- Article
- Socio-economic position and changes in 24-h movement behaviors during the retirement transition.Journal of activity, sedentary and sleep behaviors · 2025Article
- Effects of a Multidimensional Exercise and Mindfulness Approach Targeting Physical, Psychological, and Functional Outcomes: Protocol for the BACKFIT Randomized Controlled Trial with an Active Control Group.Healthcare (Basel, Switzerland) · 2025Article
- Temporal Associations of Physical Activity With Subsequent Knee Pain in Individuals With Knee Osteoarthritis: An Ecological Momentary Assessment Study.European journal of pain (London, England) · 2025Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The study of physical activity in older adults is becoming more and more relevant. For evaluation of physical activity recommendations, intensity-specific accelerometer cut-points are utilized. However, research on accelerometer cut-points for older adults is still scarce. The aim of the study was to generate placement-specific cut-points of ActiGraph GT3X+ activity counts and raw measures of acceleration to determine physical activity intensity in older adults. A further aim was to compare the validity of the generated cut-points for a range of different physical activities. The study was a single experimental trial using a convenience sample. Study participants were 20 adults aged 59 to 73 years. Accelerometers were worn at six different placements (one on each wrist, one on each ankle, and two at the hip) and breath-by-breath indirect calorimetry was used as the reference for energy. The experiment comprised of two parts; a) The first required participants to walk on a treadmill at incremental speeds (3.0-5.0 km·h-1), and b) Five different everyday activities (reading, cleaning, shopping, cycling, aerobics) were staged in the laboratory setting. Accelerometer cut-points (activity counts, raw data) were derived for each of the investigated placements by linear regression using the treadmill part. Performance of the cut-points was assessed by applying the cut-points to the everyday activities. We provide cut-points for six placements and two accelerometer metrics in the specific age group. However, the derived cut-points did not outperform published ones. More research and innovative approaches are needed for improving internal and external validity of research results across populations and age groups.
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Registered trials
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.