Evidence map›Paper›PMID 28987643›Full record

Trial reportExperimental gerontology2017

Blood flow restricted resistance training in older adults at risk of mobility limitations.

Summer B Cook, Dain P LaRoche, Michelle R Villa, Hannah Barile, Todd M Manini

2 registry-linked trialsOpen access · greenAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Experimental gerontology, 2017. 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 71 papers, 15 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 15 pooled it
16.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

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.

2 · The registry

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.

NCT03690700 naunknown statusnot on this mapstarted 2020, after this paper: background citation

The Feasibility and Effects of Low-load Blood-flow Restricted Exercise Following Spinal Cord Injury

TypeinterventionalSponsorSpinal Cord Injury Centre of Western DenmarkRan2020 to 2024Enrolled28ConditionsSpinal Cord InjuriesArmsBFRE
NCT04448236 nacompletednot on this mapstarted 2020, after this paper: background citation

Effects on Muscle Strength After Blood Flow Restriction Resistance Exercise (BFR-RE) in Early In-patient Rehabilitation of Chronic Obstructive Pulmonary Disease Acute Exacerbation (COPDAE), a Single Blinded, Randomized Controlled Study

TypeinterventionalSponsorHospital Authority, Hong KongRan2020 to 2020Enrolled53ConditionsChronic Obstructive Pulmonary Disease, Acute Exacerbation of COPDArmsBlood flow restriction resistance exercise
3 · Its place in the literature

Who cites it

71 citing papers in PubMed, 15 syntheses or guidelines pooled it, 178 citations in OpenAlex.

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  5. Effect of Blood Flow Restriction on Gait and Mobility in Older Adults: A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2024
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11 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Summer B CookDepartment of Kinesiology, University of New Hampshire, Durham, NH, United States. Electronic address: summer.cook@unh.edu.
Dain P LaRocheDepartment of Kinesiology, University of New Hampshire, Durham, NH, United States.
Michelle R VillaDepartment of Kinesiology, University of New Hampshire, Durham, NH, United States.
Hannah BarileDepartment of Kinesiology, University of New Hampshire, Durham, NH, United States.
Todd M ManiniInstitute on Aging, Department of Aging & Geriatric Research, University of Florida, Gainesville, FL, United States.
University of New Hampshire · USInstitute on Aging · US

Funding

University of Florida Older Americans Independence Center (OAIC)P30AG028740 · NIA · UNIVERSITY OF FLORIDA · PI CHRISTIAAN LEEUWENBURGH · 2007 to 2026
$22.8M
Comparative effects of resistance training protocols in older adults at risk of mR15AG040700 · NIA · UNIVERSITY OF NEW HAMPSHIRE · PI COOK, SUMMER B. · 2012 to 2012
$360k
NIA NIH HHS P30 AG028740NIA NIH HHS R15 AG040700
6 · The paper itself

Abstract

High-load resistance training (HL) may be contraindicated in older adults due to pre-existing health conditions (e.g. osteoarthritis). Low-load blood flow restricted (BFR) resistance training offers an alternative to HL with potentially similar strength improvement. PURPOSE: To compare muscle strength, cross-sectional area (CSA), physical function, and quality of life (QOL) following 12-weeks of HL or BFR training in older adults at risk of mobility limitations.

methodsThirty-six males and females (mean: 75.6years 95% confidence interval: [73.4-78.5], 1.67m [1.64-1.70], 74.3kg [69.8-78.8]) were randomly assigned to HL (70% of one repetition maximum [1-RM]) or low-load BFR (30% 1-RM coupled with a vascular restriction) exercise for the knee extensors and flexors twice per week for 12weeks. A control (CON) group performed light upper body resistance and flexibility training. Muscle strength, CSA of the quadriceps, 400-m walking speed, Short Physical Performance Battery (SPPB), and QOL were assessed before, midway and after training.

resultsWithin 6-weeks of HL training, increases in all strength measures and CSA were evident and the gains were significantly greater than the CON group (P<0.05). The BFR group had strength increases in leg extension and leg press 1-RM tests, but were significantly lower in leg extension isometric maximum voluntary contraction (MVC) and leg extension 1-RM than the HL group (P<0.01). At 12-weeks HL and BFR training did not differ in MVC (P=0.14). Walking speed increased 4% among all training groups (P<0.01) and no changes were observed for overall SPPB score and QOL (P>0.05).

conclusionBoth training programs resulted in muscle CSA improvements and HL training had more pronounced strength gains than BFR training after 6-weeks and were more similar to BFR after 12-weeks of training. These changes in both groups did not transfer to improvements in QOL, SPPB, and walking speed. Since both programs result in strength and CSA gains, albeit at different rates, future research should consider using a combination of HL and BFR training in older adults with profound muscle weakness and mobility limitations.

Indexed as

IschemiaIsometric ContractionMobility LimitationMuscle StrengthAgedAged, 80 and overAge FactorsAgingExercise TestExercise ToleranceFemaleGeriatric AssessmentHumansMagnetic Resonance ImagingMaleQuadriceps MuscleBlood flow restrictionElderlyPhysical functionResistance trainingStrength

Identifiers

PMID28987643
PMCPMC5660944
OpenAlexW2762884824

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.