Trial reportEuropean journal of applied physiology2014
Effects of isometric training on the knee extensor moment-angle relationship and vastus lateralis muscle architecture.
Trial report in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.
What it found
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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
35 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Effects of strength training on neuromuscular adaptations in the development of maximal strength: a systematic review and meta-analysis.Scientific reports · 2025Pooled it
- Pooled it
- Trial
- Joint angle-specific neuromuscular time course of recovery after isometric resistance exercise at shorter and longer muscle lengths.Journal of applied physiology (Bethesda, Md. : 1985) · 2024Trial
- Trial
- The adaptations in muscle architecture following whole body vibration training.Journal of musculoskeletal & neuronal interactions · 2022Trial
- Influence of Sex on the Recovery Response Following Isometric Exercise Performed at Long Muscle Length.Journal of strength and conditioning research · 2026Article
- Isometric training at longer muscle-tendon complex lengths: A potential countermeasure to impaired neuro-muscle-tendon function during space travel.Experimental physiology · 2026Review
- Comparison of maximal strength, muscle morphology, and motor unit recruitment and firing rate patterns of the abductor digiti minimi in normal-fat and over-fat males.Sports medicine and health science · 2026Article
- Recovery response comparisons between variable resistance and long and short muscle length isometric exercise.European journal of applied physiology · 2026Article
- Does longer-muscle length resistance training cause greater longitudinal growth in humans? A systematic review.Sports medicine and health science · 2026Review
- The interplay between muscle length, range of motion, and exercise selection: a review.Sports medicine international open · 2026Review
- Protocol for a Trial to Assess the Efficacy and Applicability of Isometric Strength Training in Older Adults with Sarcopenia and Dynapenia.Healthcare (Basel, Switzerland) · 2025Article
- The Structural Adaptations That Mediate Mechanical Load-Induced Changes in Muscle Mass.Advances in experimental medicine and biology · 2025Review
- ADAPTations to low load blood flow restriction exercise versus conventional heavier load resistance exercise in UK military personnel with persistent knee pain: protocol for the ADAPT study, a multi-centre randomized controlled trial.BMC musculoskeletal disorders · 2023Article
- Beyond peak torque: Longitudinal analysis of angle-specific isokinetic knee torques in collegiate athletes post-ACLR.Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine · 2023Article
- Muscle Architecture and Subcutaneous Fat Measurements of Rectus Femoris and Vastus Lateralis at Optimal Length Aided by a Novel Ultrasound Transducer Attachment.Physiotherapy Canada. Physiotherapie Canada · 2023Article
- Longing for a Longitudinal Proxy: Acutely Measured Surface EMG Amplitude is not a Validated Predictor of Muscle Hypertrophy.Sports medicine (Auckland, N.Z.) · 2022Article
- Implementing Ultrasound Imaging for the Assessment of Muscle and Tendon Properties in Elite Sports: Practical Aspects, Methodological Considerations and Future Directions.Sports medicine (Auckland, N.Z.) · 2021Review
- Stimuli for Adaptations in Muscle Length and the Length Range of Active Force Exertion-A Narrative Review.Frontiers in physiology · 2021Review
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo analyse the muscle adaptations induced by two protocols of isometric training performed at different muscle lengths.
methodsTwenty-eight subjects were divided into three groups: one (K90) performed isometric training of the knee extensors at long muscle lengths (90° of knee flexion) for 8 weeks, and the second group (K50) at short muscle lengths (50°). The subjects of the third group acted as controls. Isokinetic dynamometry was utilized to analyse the net moment-angle relationship and vastus lateralis muscle thickness at three different locations, and pennation angles and fascicle length at 50 % of thigh length were measured at rest with ultrasonography.
resultsOnly subjects from K90 group showed significant increases in isokinetic strength (23.5%, P < 0.001), while K50 group showed no increases in isokinetic strength: (10%, P > 0.05). There was a shift in the angle of peak torque of the K90 group to longer muscle lengths (+14.6%, P = 0.002) with greater increases in isokinetic strength, while the K50 angle shifted to shorter muscle lengths (-7.3%, P = 0.039). Both training groups showed significant increases in muscle thickness, (K90 9-14% vs. K50 5-9%) but only K90 significantly increased their pennation angles (11.7%, P = 0.038). Fascicle lengths remained unchanged.
conclusionsIsometric training at specific knee angles led to significant shifts of peak torque in the direction of the training muscle lengths. The greater strength gains and the architectural changes with training at long muscle lengths probably come from a combination of different factors, such as the different mechanical stresses placed upon the muscle-tendon complex.
Indexed as
Identifiers
25099962What 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.