ArticleSensors (Basel, Switzerland)2021
The Validity and Reliability of Two Commercially Available Load Sensors for Clinical Strength Assessment.
Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 13 papers.
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.
The Implications of Tourniquet Use on Early Quadriceps Function in Anterior Cruciate Ligament Reconstructions: A Randomized Controlled Trial
Use of Hand-held Dynamometry to Obtain Objective Measures of Lower Extremity Rate of Peak Force Production, Cumulative Peak Force Production, and Sustained Peak Force Production Among Patients With Chronic Stroke
Who cites it
13 citing papers in PubMed.
- Spaceflight and sport science: Physiological monitoring and countermeasures for the astronaut-athlete on Mars exploration missions.Experimental physiology · 2026Review
- A Comparison of Methods for Tracking Muscle Quality During Early-Phase Rehabilitation Following Anterior Cruciate Ligament Reconstruction.Journal of functional morphology and kinesiology · 2026Article
- The Role of Muscle Strength, Physical Activity, Perceived Stress, and Sleep Quality in Patients with Hypertension.Journal of functional morphology and kinesiology · 2026Article
- Preliminary development and validation of a textile-based pressure-sensing system for lower-limb prosthetic sockets.Biomedical engineering online · 2026Article
- Inter-Session Reliability of an Isometric Muscle Strength Protocol in Older Adults.Journal of functional morphology and kinesiology · 2026Article
- Investigation of a Low-cost Portable Inline Dynamometer for Measuring Isometric Knee Extensor Strength.International journal of sports physical therapy · 2026Article
- Handgrip strength assessment in breast cancer patients: validity and reliability of the Activ5 dynamometer.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2025Article
- Article
- Sport-specific training and return to sport after ACL reconstruction in elite athletes: a narrative review.Annals of joint · 2025Review
- An Exercise-Based Precision Medicine Tool and Smartphone App for Managing Achilles Tendinopathy (the 'PhysViz' System): User-Centered Development Study.JMIR human factors · 2024Article
- Pole Dancing-Specific Muscle Strength: Development and Reliability of a Novel Assessment Protocol.Methods and protocols · 2024Article
- Investigation of the playing digital games on shoulder flexibility, muscle strength and reaction speed in volleyball players.Frontiers in public health · 2024Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
Abstract
objectiveHandheld dynamometers are common tools for assessing/monitoring muscular strength and endurance. Health/fitness Bluetooth load sensors may provide a cost-effective alternative; however, research is needed to evaluate the validity and reliability of such devices. This study assessed the validity and reliability of two commercially available Bluetooth load sensors (Activ5 by Activbody and Progressor by Tindeq).
methodsFour tests were conducted on each device: stepped loading, stress relaxation, simulated exercise, and hysteresis. Each test type was repeated three times using the Instron ElectroPuls mechanical testing device (a gold-standard system). Test-retest reliability was assessed through intraclass correlations. Agreement with the gold standard was assessed with Pearson's correlation, interclass correlation, and Lin's concordance correlation.
resultsThe Activ5 and Progressor had excellent test-retest reliability across all four tests (ICC(3,1) ≥ 0.999, all
conclusionExcellent test-retest reliability was found, suggesting that both devices can be used in a clinical setting to measure patient progress over time; however, the Activ5 consistently had poorer agreement with the gold standard (particularly at higher loads).
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.