Evidence mapPaperPMID 24951618Full record

ArticleThe Journal of physiology2014

Assessment of in vivo skeletal muscle mitochondrial respiratory capacity in humans by near-infrared spectroscopy: a comparison with in situ measurements.

Terence E Ryan, Patricia Brophy, Chien-Te Lin, Robert C Hickner, P Darrell Neufer

5 registry-linked trialsAbstract readComparative Study
In one paragraph

Article in The Journal of physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 5 registered trials, which are not on this map. Cited by 93 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 1 pooled it
field-weighted citation impact
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.

NCT07771010 phase4recruitingstarted 2026, after this paper: background citation

The Effect of Empagliflozin and Metformin on Oxidative Capacity and Microvascular Reactivity of Skeletal Muscle in Patients With Type 2 Diabetes Mellitus

Ran2026Enrolled54Registered outcomes14Posted comparisons0ConditionsDiabetes Type 2ArmsEmpagliflozin (Jardiance®), Metformin, Synjardy® 12.5mg/1000mg film-coated tablets
Open the trial in the graph
NCT03678233 phase2unknown statusnot on this mapstarted 2019, after this paper: background citation

Efficacy of Testosterone Gel to Restore Normal Serum Values of Testosterone During the Acute Phase of Critical Illness in Adult ICU Patients

TypeinterventionalSponsorUniversity Hospital, Clermont-FerrandRan2019 to 2025Enrolled30ConditionsHypermetabolism in ICU, Loss of Muscle Mass, Functional Disability After ICU, ICU Acquired HypogonadismArmsAndroGel 16.2 mg/L
NCT04201548 nacompletednot on this mapstarted 2019, after this paper: background citation

Comparison of Clinical and Physiological Response Among Three Modalities of Exercise Training in COPD With Chronic Respiratory Failure (CRF)

TypeinterventionalSponsorIstituti Clinici Scientifici Maugeri SpARan2019 to 2024Enrolled45ConditionsCopd, Chronic Hypoxemic Respiratory FailureArmsEndurance Training, Long High Intensity Interval Training, Short High Intensity Interval Training
NCT04320264 recruitingnot on this mapstarted 2020, after this paper: background citation

Metabolic Inflexibility is Related to Elevated Muscle Anaerobic Glycolysis

TypeobservationalSponsorEast Carolina UniversityRan2020 to 2025Enrolled100ConditionsMetabolic InflexibilityArmsWeight loss surgery
NCT06083194 unknown statusnot on this mapstarted 2024, after this paper: background citation

Non-invasive Evaluation of Muscle Oxidative Capacity. Study of Its Relationship With Muscular Endurance and Fatigue in Patients With Multiple Sclerosis

TypeobservationalSponsorUniversity Hospital, Clermont-FerrandRan2024 to 2025Enrolled30ConditionsMultiple Sclerosis
3 · Its place in the literature

Who cites it

93 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Muscle Oximetry in Sports Science: A Systematic Review.Sports medicine (Auckland, N.Z.) · 2018
    Pooled it
  2. Trial
  3. Exercise training-induced speeding ofEuropean journal of applied physiology · 2025
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  17. Oxidative and OExperimental physiology · 2025
    Article
  18. Article
  19. Article
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33 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.

Terence E RyanDepartment of Physiology, East Carolina University, Greenville, NC, USA East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA ryant@ecu.edu.
Patricia BrophyDepartment of Physiology, East Carolina University, Greenville, NC, USA East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA.
Chien-Te LinDepartment of Physiology, East Carolina University, Greenville, NC, USA East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA.
Robert C HicknerDepartment of Physiology, East Carolina University, Greenville, NC, USA Department of Kinesiology, East Carolina University, Greenville, NC, USA East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA Human Performance Laboratory, East Carolina University, Greenville, NC, USA Center for Health Disparities, East Carolina University, Greenville, NC, USA School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
P Darrell NeuferDepartment of Physiology, East Carolina University, Greenville, NC, USA Department of Kinesiology, East Carolina University, Greenville, NC, USA East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA Human Performance Laboratory, East Carolina University, Greenville, NC, USA.

Funding

NIDDK NIH HHS DK074825NIDDK NIH HHS R01 DK074825NIDDK NIH HHS R01 DK096907
6 · The paper itself

Abstract

The present study aimed to compare in vivo measurements of skeletal muscle mitochondrial respiratory capacity made using near-infrared spectroscopy (NIRS) with the current gold standard, namely in situ measurements of high-resolution respirometry performed in permeabilized muscle fibres prepared from muscle biopsies. Mitochondrial respiratory capacity was determined in 21 healthy adults in vivo using NIRS to measure the recovery kinetics of muscle oxygen consumption following a ∼15 s isometric contraction of the vastus lateralis muscle. Maximal ADP-stimulated (State 3) respiration was measured in permeabilized muscle fibres using high-resolution respirometry with sequential titrations of saturating concentrations of metabolic substrates. Overall, the in vivo and in situ measurements were strongly correlated (Pearson's r = 0.61-0.74, all P < 0.01). Bland-Altman plots also showed good agreement with no indication of bias. The results indicate that in vivo NIRS corresponds well with the current gold standard, in situ high-resolution respirometry, for assessing mitochondrial respiratory capacity.

Indexed as

Oxygen ConsumptionAdolescentAdultCell RespirationFemaleHumansMaleMitochondria, MuscleMuscle, SkeletalOxygenSpectroscopy, Near-InfraredOxygen

Identifiers

PMID24951618
PMCPMC4146372

What Socratic holds

Textmetadata
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 Socratic graph.