ArticleBritish journal of health psychology2026
(Un)aware of change? Objective and subjective reactivity to the sensor-based measurement of physical activity and sedentary behaviour.
Article in British journal of health psychology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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.
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.
Who cites it
1 citing paper in PubMed.
- (Un)aware of change? Objective and subjective reactivity to the sensor-based measurement of physical activity and sedentary behaviour.British journal of health psychology · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
Abstract
objectivesDespite being the gold standard for assessing physical activity (PA) under free-living conditions, accelerometer-based assessments are prone to measurement reactivity, that is, changes in people's cognitions, emotions or behaviour due to being measured. Little is known about whether participants are aware of these changes. This preregistered secondary analysis assesses objective and subjective reactivity to the sensor-based measurement of PA (steps, light PA [LPA], moderate-to-vigorous PA [MVPA]) and sedentary behaviour (SB) in adults with and without attention-deficit/hyperactivity disorder (ADHD), depression and insulin resistance.
designIntensive longitudinal design.
methodsTwo existing datasets were used, comprising 354 adults (64% female; M
resultsMultilevel models found small, but significant decreases of PA over the study period and from the first study day(s) to the remaining study days. Yet, over 90% of participants indicated to have (rather) not changed their PA. SB did not systematically change. Subjective measurement reactivity and clinical diagnoses were not related to measurement reactivity.
conclusionsSteps, LPA and MVPA, but not SB, systematically changed in line with common definitions of measurement reactivity. Yet, most participants were unaware of these changes, potentially because changes were small. Measurement reactivity may be predominantly driven by unconscious mechanisms and appears universal, with no differences found by diagnoses.
Indexed as
Identifiers
What OpenQuestion holds
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.