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Feasibility Studies

Clinical Research · NLM MeSH · updated 2026-10-29 · version 1

Citations verified against PubMedNot yet clinician-reviewed10 referencesApproximately 7 min read

Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.

Table of Contents

1. Definition2. Research landscape3. Reading the evidence4. Open-access studies5. Key reviews6. References7. About this article

Definition and research guide

This page combines a MeSH definition, publication statistics and selected research abstracts. It is a starting point for reading the literature, not a medical textbook or a systematic evidence review.

Content available: 4 complete abstracts (1,387 words), 10 references. Full article text is not stored or reproduced here; follow the PMID, DOI or PMC links to read the original sources and their access terms.

Definition

Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.

Definition: NLM Medical Subject Headings (MeSH) scope note (Public domain (U.S. National Library of Medicine); attribution requested). View the MeSH record.

Also known as: Feasibility Study; Studies, Feasibility; Study, Feasibility.

Where it fits in the MeSH classification

Broader topics
Epidemiologic Study Characteristics; Evaluation Studies as Topic

Research landscape

PubMed indexes 100,705 records tagged with the MeSH heading “Feasibility Studies” (counts retrieved 2026-10-29). 32,299 of them (32.1%) were published from 2020 onward, and the busiest period so far is 2010-2019 with 41,221 records.

Reviews account for 2,416 records (2.4%) and meta-analyses for 319. Randomized controlled trials number 9,147 (9.1%) as a share of all records on the topic. Randomized trials make up a comparatively large share of this literature, which means many treatment questions have been tested directly.

PubMed records by publication periodthrough 1999: 5,436 records; 2000-2009: 21,749 records; 2010-2019: 41,221 records; 2020 onward: 32,299 records5,436through 199921,7492000-200941,2212010-201932,2992020 onward
Records in PubMed indexed with this heading, by publication period. Real counts from NCBI E-utilities; the final period covers only part of the current year. Volume reflects how much has been published, not how strong the evidence is.
Show the data
PeriodRecords
through 19995,436
2000-200921,749
2010-201941,221
2020 onward32,299
Share of records by publication typeReviews: 2.4 percent; Meta-analyses: 0.3 percent; Randomized controlled trials: 9.1 percentReviews2.4% (2,416)Meta-analyses0.3% (319)Randomized controlled trials9.1% (9,147)
Share of all PubMed records on this heading that carry each publication type. Types overlap with other records, so the shares do not sum to 100%.
Publication-type chart data
Publication types among 100,705 PubMed records
TypeRecordsShare
Reviews2,4162.4%
Meta-analyses3190.3%
Randomized controlled trials9,1479.1%

Method: PubMed query "Feasibility Studies"[MeSH Terms] with publication-type and date filters, retrieved 2026-10-29.

Reading the evidence in clinical research

Research methods determine how much a result can be trusted. Randomized trials guard against confounding, systematic reviews and meta-analyses combine many studies, and observational designs are valuable but can show only association. Reporting standards, trial registration and pre-specified outcomes reduce bias. When reading about a method, ask what problem it is designed to solve and which problems it does not solve.

Evidence from open-access studies

These open-access studies come from PubMed’s best-match results for this heading (papers whose main topic it is), ranked here by citation count, with one recent addition. Each abstract is reproduced in full under its recorded open licence so that you can read the authors’ own words. They illustrate the literature; they are not a systematic summary of it. Citation counts measure attention, not reliability or clinical benefit.

Study comparison — selected abstracts, not a systematic review
Study / authorsYearSource label / designEurope PMC citationsLicence / source
The frail-LESS (LEss sitting and sarcopenia in frail older adults) remote intervention to improve sarcopenia and maintain independent living via reductions in sedentary behaviour: findings from a randomised controlled feasibility trial
Bailey DP, Harper JH, Kilbride C, McGowan LJ, Victor C, Brierley ML, et al.
2024Randomized controlled trial
Design not recorded in structured metadata
18cc by
PMID 39251904 · DOI · PMC11382500
A digitally supported multimodal lifestyle program to promote brain health among older adults (the LETHE randomized controlled feasibility trial): study design, progress, and first results
Rosenberg A, Untersteiner H, Guazzarini AG, Bödenler M, Bruinsma J, Buchgraber-Schnalzer B, et al.
2024Randomized controlled trial
Design not recorded in structured metadata
16cc by
PMID 39574193 · DOI · PMC11580696
Gaming-Based Tele-Exercise Program to Improve Physical Function in Frail Older Adults: Feasibility Randomized Controlled Trial
Kannan L, Sahu U, Subramaniam S, Mehta N, Kaur T, Hughes S, et al.
2024Randomized controlled trial
Design not recorded in structured metadata
14cc by
PMID 39602215 · DOI · PMC11635319
Stress Reduction in Perioperative Care: Feasibility Randomized Controlled Trial
Kondylakis H, Giglioli IAC, Katehakis D, Aldemir H, Zikas P, Papagiannakis G, et al.
2025Randomized controlled trial
Design not recorded in structured metadata
11cc by
PMID 39773866 · DOI · PMC11751654

The frail-LESS (LEss sitting and sarcopenia in frail older adults) remote intervention to improve sarcopenia and maintain independent living via reductions in sedentary behaviour: findings from a randomised controlled feasibility trial [1]

Randomized controlled trial Bailey DP, Harper JH, Kilbride C, McGowan LJ, Victor C, Brierley ML, et al. · · 2024 · cited 18 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
BackgroundSarcopenia leads to functional disability, dependence in activities of daily living (ADL), and is a key contributor to frailty.
Closing excerpt
Registered 6th August 2021.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (275 words)

BackgroundSarcopenia leads to functional disability, dependence in activities of daily living (ADL), and is a key contributor to frailty. Reducing and breaking up sedentary time is associated with improved sarcopenia and frailty-related outcomes. The aim of this study was to determine the feasibility of delivering and evaluating a remote sedentary behaviour intervention to improve sarcopenia and independent living in older adults with frailty.MethodsA two-arm randomised controlled feasibility trial was conducted with a target of 60 older adults (mean age 74 ± 6 years) with very mild or mild frailty. Participants were randomised to the Frail-LESS (LEss Sitting and Sarcopenia in Frail older adults) intervention or usual care control group for six months. The intervention included tailored feedback on sitting, standing and stepping; an education workbook that included goal setting and action planning; one-to-one health coaching; peer support; and a wearable device to self-monitor sedentary behaviour. Participant recruitment (percentage of eligible individuals recruited), retention and data completion rates were used to assess trial feasibility. Acceptability of the trial was explored through interviews and safety was evaluated via unplanned healthcare utilisation and number of falls. Sitting, standing, stepping and sarcopenia were measured to evaluate potential intervention effects.ResultsSixty participants were recruited. Recruitment and retention rates were 72% and 83%, respectively. Completion rates for outcome measures ranged from 70 to 100%. The trial was safe (ConclusionsThis study demonstrates the feasibility and safety of delivering and evaluating a remote intervention to reduce and break up sitting in older adults with frailty. The intervention showed evidence towards reducing daily sitting and improving sarcopenia, supporting its evaluation in a definitive randomised controlled trial.Trial registrationISRCTN registry (registration number: ISRCTN17158017). Registered 6th August 2021.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 39251904 · DOI · PMC11382500

A digitally supported multimodal lifestyle program to promote brain health among older adults (the LETHE randomized controlled feasibility trial): study design, progress, and first results [2]

Randomized controlled trial Rosenberg A, Untersteiner H, Guazzarini AG, Bödenler M, Bruinsma J, Buchgraber-Schnalzer B, et al. · · 2024 · cited 16 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
BackgroundThe Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability (FINGER) multimodal lifestyle intervention yielded cognitive and other health benefits in older adults at risk of cognitive decline.
Closing excerpt
gov (NCT05565170).
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (346 words)

BackgroundThe Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability (FINGER) multimodal lifestyle intervention yielded cognitive and other health benefits in older adults at risk of cognitive decline. The two-year multinational randomized controlled LETHE trial evaluates the feasibility of a digitally supported, adapted FINGER intervention among at-risk older adults. Technology is used to complement in-person activities, streamline the intervention delivery, personalize recommendations, and collect digital biomarkers.MethodsTrial includes older adults (60-77 years) with digital readiness/experience with smart devices and increased dementia risk but without substantial cognitive impairment. Participants are enrolled at four sites (Austria, Finland, Italy, Sweden). At baseline, participants were randomized 1:1 ratio to 1) intervention i.e., structured multimodal lifestyle program (including diet, exercise, cognitive training, vascular/metabolic risk management, social stimulation, sleep/stress management) where in-person activities led by professionals are supported with an Android mobile phone application developed by the consortium (the LETHE App); or 2) control i.e., self-guided program (regular health advice; simplified App with no personalized/interactive content). All participants wear smartwatches to gather passive data (e.g., physical activity, sleep). Primary outcomes are retention, adherence, and change in validated dementia risk scores. Secondary outcomes include changes in lifestyle, cognition, stress, sleep, health-related quality of life, and health literacy. Additional outcomes (exploratory) include e.g. participant experiences and dementia-related biomarkers (Alzheimer's disease blood markers, neuroimaging). A sub-study explores the feasibility of novel interactive technology (audio glasses, social robot).ResultsRecruitment began in September 2022, and the last participant was randomized in June 2023. In total, 156 individuals were randomized (mean age 69 years, 65% women; balanced recruitment across the four sites). Vascular and lifestyle risk factors were common (e.g., 65% with hypertension, 69% with hypercholesterolemia, 39% physically inactive), indicating successful recruitment of a population with risk reduction potential. Trial will be completed by summer 2025. Retention until the first post-baseline visit at 6 months is high (n = 2 discontinued, retention 98.7%).ConclusionLETHE provides crucial information about the feasibility of technology and a digitally supported FINGER lifestyle program to promote brain health. Digital tools specifically designed for older adults could offer potential for large-scale, cost-effective prevention programs.Trial registrationClinicalTrials.gov (NCT05565170).

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 39574193 · DOI · PMC11580696

Gaming-Based Tele-Exercise Program to Improve Physical Function in Frail Older Adults: Feasibility Randomized Controlled Trial [3]

Randomized controlled trial Kannan L, Sahu U, Subramaniam S, Mehta N, Kaur T, Hughes S, et al. · · 2024 · cited 14 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
BackgroundFrailty leads to reduced physical activity can cause increased fall risk.
Closing excerpt
gov/study/NCT04534686.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (353 words)

BackgroundFrailty leads to reduced physical activity can cause increased fall risk. This contributes to accelerated aging processes, leading to adverse health outcomes and reduced quality of life. We have developed and piloted the design, usability, safety, and feasibility of a gaming-based cognitive-motor (CogXergaming) tele-exercise protocol in prefrail older adults.ObjectiveThis pilot randomized control trial tested preliminary feasibility and effectiveness of the CogXergaming telehealth protocol for improving physical function.MethodsCommunity-dwelling, prefrail older adults were randomly assigned to CogXergaming (n=13) or a control group (n=14). The CogXergaming group received supervised tele-exercises in a gaming format for 6 weeks (3 sessions per week) comprising 18 sessions lasting 90 minutes each. Control group participants participated in a Matter of Balance (MOB), an 8-week, once-a-week structured 90-minute tele-session that has been shown to reduce the fear of falling and increase physical activity. Feasibility of training was obtained by computing the median duration of training sessions for the CogXergaming group. Effectiveness was assessed using dynamic balance control (Four Square Step Test), subjective self-efficacy (Activities-Specific Balance Confidence scale), gait function (Tinetti Performance Oriented Mobility Assessment), muscle strength (30-second chair stand test), and endurance (2-minute step in-place test).ResultsOf the 45 participants enrolled in the study, 4 participants from CogXergaming group and 5 from MOB group lost contact after signing the consent form and did not receive their respective intervention. Eighteen participants were randomized to each group. In the CogXergaming group, 15 (83%) completed the intervention, with 3 (16%) dropping out in the first week. In the MOB group, 16 (88%) completed the program, with 2 (11%) withdrawing during the first week. In addition, there was a significant time group interaction for Four Square Step Test (F1,21=5.55, P=.03), Tinetti Performance Oriented Mobility Assessment (F1,25=4.16, P=.05), and 30-second chair stand test (F1,21=5.06, P=.03), with a significant improvement in these measures for the CogXergaming group post training, compared with no change observed in the MOB group.ConclusionsThese pilot findings indicate that CogXergaming is feasible and applicable in prefrail older adults. Such game-based protocols can be beneficial in improving physical function among community-dwelling, prefrail older adults, however, the efficacy of such training requires further investigation.Trial registrationClinicalTrials.gov NCT04534686; https://clinicaltrials.gov/study/NCT04534686.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 39602215 · DOI · PMC11635319

Stress Reduction in Perioperative Care: Feasibility Randomized Controlled Trial [4]

Randomized controlled trial Kondylakis H, Giglioli IAC, Katehakis D, Aldemir H, Zikas P, Papagiannakis G, et al. · · 2025 · cited 11 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
BackgroundPatients undergoing surgery often experience stress and anxiety, which can increase complications and hinder recovery.
Closing excerpt
2196/38536.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (413 words)

BackgroundPatients undergoing surgery often experience stress and anxiety, which can increase complications and hinder recovery. Effective management of these psychological factors is key to improving outcomes. Preoperative anxiety is inversely correlated with the amount of information patients receive, but accessible, personalized support remains limited, especially in preoperative settings. Face-to-face education is often impractical due to resource constraints. Digital health (DH) interventions offer a promising alternative, enhancing patient engagement and empowerment. However, most current tools focus on providing information, overlooking the importance of personalization and psychological support.ObjectiveThis study aimed to assess the viability of a DH intervention known as the Adhera CARINAE DH Program. This program is specifically designed to offer evidence-based and personalized stress- and anxiety-management techniques. It achieves this by using a comprehensive digital ecosystem that incorporates wearable devices, mobile apps, and virtual reality technologies. The intervention program also makes use of advanced data-driven techniques to deliver tailored patient education and lifestyle support.MethodsA total of 74 patients scheduled for surgery across 4 hospitals in 3 European countries were enrolled in this study from September 2021 to March 2022. Surgeries included cardiopulmonary and coronary artery bypass surgeries, cardiac valve replacements, prostate or bladder cancer surgeries, hip and knee replacements, maxillofacial surgery, and scoliosis procedures. After assessment for eligibility, participants were randomized into 2 groups: the intervention group (n=23) received the Adhera CARINAE DH intervention in addition to standard care, while the control group (n=27) received standard care alone. Psychological metrics such as self-efficacy, self-management, and mental well-being were assessed before and after the intervention, alongside physiological markers of stress.ResultsThe intervention group demonstrated significant improvements across several psychological outcomes. For example, Visual Analogue Scale Stress at the hospital improved at admission by 5% and at hospital discharge by 11.1% and Visual Analogue Scale Pain at admission improved by 31.2%. In addition, Hospital Anxiety and Depression Scale Anxiety after surgery improved by 15.6%, and Positive and Negative Affect Scale-Negative at hospital admission improved by 17.5%. Overall, patients in the intervention study spent 17.12% less days in the hospital. Besides these individual scores, the intervention group shows more positive relationships among the psychological dimensions of self-efficacy, self-management, and mental well-being, suggesting that the CARINAE solution could have a positive effect and impact on the reduction of stress and negative emotions.ConclusionsOur results provide an important first step toward a deeper understanding of optimizing DH solutions to support patients undergoing surgery and for potential applications in remote patient monitoring and communication.Trial registrationClinicalTrials.gov NCT05184725; https://clinicaltrials.gov/study/NCT05184725.International registered report identifier (irrid)RR2-10.2196/38536.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 39773866 · DOI · PMC11751654

Key reviews and meta-analyses

The most cited review-type papers among PubMed’s best-match results for this heading, listed with bibliographic details only. Follow the links for the full text and access terms.

  • Research article What is a pilot or feasibility study? A review of current practice and editorial policy [5]
    Arain M, Campbell MJ, Cooper CL, Lancaster GA · BMC Med Res Methodol · 2010 · cited 905 times (Europe PMC)
  • Research article Questions asked and answered in pilot and feasibility randomized controlled trials [6]
    Shanyinde M, Pickering RM, Weatherall M · BMC Med Res Methodol · 2011 · cited 156 times (Europe PMC)
  • Research article The Structured Process to Identify Fit-For-Purpose Data: A Data Feasibility Assessment Framework [7]
    Gatto NM, Campbell UB, Rubinstein E, Jaksa A, Mattox P, Mo J, et al. · Clin Pharmacol Ther · 2022 · cited 62 times (Europe PMC)
  • Research article Applied Hologenomics: Feasibility and Potential in Aquaculture [8]
    Limborg MT, Alberdi A, Kodama M, Roggenbuck M, Kristiansen K, Gilbert MTP · Trends Biotechnol · 2018 · cited 48 times (Europe PMC)
  • Research article Formal feasibility studies in palliative care: why they are important and how to conduct them [9]
    Hagen NA, Biondo PD, Brasher PM, Stiles CR · J Pain Symptom Manage · 2011 · cited 40 times (Europe PMC)
  • Research article The Acceptability, Engagement, and Feasibility of Mental Health Apps for Marginalized and Underserved Young People: Systematic Review and Qualitative Study [10]
    Bear HA, Ayala Nunes L, Ramos G, Manchanda T, Fernandes B, Chabursky S, et al. · J Med Internet Res · 2024 · cited 30 times (Europe PMC)

References

  1. Bailey DP, Harper JH, Kilbride C, McGowan LJ, Victor C, Brierley ML, et al.. The frail-LESS (LEss sitting and sarcopenia in frail older adults) remote intervention to improve sarcopenia and maintain independent living via reductions in sedentary behaviour: findings from a randomised controlled feasibility trial. . 2024. PMID 39251904 · DOI · PMC11382500
  2. Rosenberg A, Untersteiner H, Guazzarini AG, Bödenler M, Bruinsma J, Buchgraber-Schnalzer B, et al.. A digitally supported multimodal lifestyle program to promote brain health among older adults (the LETHE randomized controlled feasibility trial): study design, progress, and first results. . 2024. PMID 39574193 · DOI · PMC11580696
  3. Kannan L, Sahu U, Subramaniam S, Mehta N, Kaur T, Hughes S, et al.. Gaming-Based Tele-Exercise Program to Improve Physical Function in Frail Older Adults: Feasibility Randomized Controlled Trial. . 2024. PMID 39602215 · DOI · PMC11635319
  4. Kondylakis H, Giglioli IAC, Katehakis D, Aldemir H, Zikas P, Papagiannakis G, et al.. Stress Reduction in Perioperative Care: Feasibility Randomized Controlled Trial. . 2025. PMID 39773866 · DOI · PMC11751654
  5. Arain M, Campbell MJ, Cooper CL, Lancaster GA. What is a pilot or feasibility study? A review of current practice and editorial policy. BMC Med Res Methodol. 2010. PMID 20637084 · DOI · PMC2912920
  6. Shanyinde M, Pickering RM, Weatherall M. Questions asked and answered in pilot and feasibility randomized controlled trials. BMC Med Res Methodol. 2011. PMID 21846349 · DOI · PMC3170294
  7. Gatto NM, Campbell UB, Rubinstein E, Jaksa A, Mattox P, Mo J, et al.. The Structured Process to Identify Fit-For-Purpose Data: A Data Feasibility Assessment Framework. Clin Pharmacol Ther. 2022. PMID 34716990 · DOI · PMC9299818
  8. Limborg MT, Alberdi A, Kodama M, Roggenbuck M, Kristiansen K, Gilbert MTP. Applied Hologenomics: Feasibility and Potential in Aquaculture. Trends Biotechnol. 2018. PMID 29395346 · DOI
  9. Hagen NA, Biondo PD, Brasher PM, Stiles CR. Formal feasibility studies in palliative care: why they are important and how to conduct them. J Pain Symptom Manage. 2011. PMID 21444184 · DOI
  10. Bear HA, Ayala Nunes L, Ramos G, Manchanda T, Fernandes B, Chabursky S, et al.. The Acceptability, Engagement, and Feasibility of Mental Health Apps for Marginalized and Underserved Young People: Systematic Review and Qualitative Study. J Med Internet Res. 2024. PMID 39078699 · DOI · PMC11322694

About this article

Sources
NLM Medical Subject Headings (definition, synonyms); NCBI PubMed (counts, identifiers); Europe PMC (open-access abstracts and citation counts).
Verification
Every reference was resolved against PubMed on 2026-10-31; title, year and DOI matched.
Review state
automated source verified; no human expert review has been recorded yet.
Version
1, last updated 2026-10-29.

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Related research topics

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All 98 articles in Clinical Research →

At a glance

100,705
PubMed records on this heading
32%
published since 2020
2,416
review articles
9,147
randomized trials
10
verified references below

Counts come from PubMed on 2026-10-29; they show how much has been written, not how strong the evidence is.

Related topics See all →

  • Prospective StudiesClinical Research
  • Retrospective StudiesClinical Research
  • Follow-Up StudiesClinical Research
  • Cohort StudiesClinical Research
  • Case-Control StudiesClinical Research

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