Trial reportJournal of athletic training
Symptomatic and functional responses to concentric-eccentric isokinetic versus eccentric-only isotonic exercise.
Trial report in Journal of athletic training. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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
11 citing papers in PubMed, 27 citations in OpenAlex.
- Trial
- Eccentric and concentric blood flow restriction resistance training on indices of delayed onset muscle soreness in untrained women.European journal of applied physiology · 2019Trial
- Predicting the occurrence of minor adverse events in cardiac rehabilitation using physical variables.Scientific reports · 2024Article
- Eccentric Exercise: Adaptations and Applications for Health and Performance.Journal of functional morphology and kinesiology · 2021Review
- Isokinetic Testing: Sensitivity of the Force-Velocity Relationship Assessed through the Two-Point Method to Discriminate between Muscle Groups and Participants' Physical Activity Levels.International journal of environmental research and public health · 2020Article
- COMPARISON OF FUNCTIONAL ACTIVITIES ON STRUCTURAL CHANGES OF THE INFERIOR PATELLAR POLE.International journal of sports physical therapy · 2017Article
- Eccentric Exercise Program Design: A Periodization Model for Rehabilitation Applications.Frontiers in physiology · 2017Article
- Strength gain through eccentric isotonic training without changes in clinical signs or blood markers.BMC musculoskeletal disorders · 2013Article
- Pain-related fear and catastrophizing predict pain intensity and disability independently using an induced muscle injury model.The journal of pain · 2012Article
- Effects of a 4-week eccentric training program on the repeated bout effect in young active women.Journal of sports science & medicine · 2011Article
- Effect of low-level laser therapy (LLLT) and light-emitting diodes (LEDT) applied during combined training on performance and post-exercise recovery: protocol for a randomized placebo-controlled trial.Brazilian journal of physical therapyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
contextRehabilitation protocols involving eccentric resistance exercise performed with loading more than 100% concentric 1-repetition maximum are effective in increasing muscle function in both healthy and injured populations. The mode of eccentric exercise (isokinetic versus isotonic) may be an important factor in limiting symptoms of delayed-onset muscle soreness and in improving muscle function after training.
objectiveTo compare functional and symptomatic responses after an eccentric-only (ECC) isotonic exercise protocol and after a combined concentric-eccentric (CON-ECC) isokinetic exercise protocol matched for total exercise volume.
designObservational study.
settingControlled research laboratory. PATIENTS OR OTHER
participantsTwenty-four healthy, untrained, college-aged men (n = 12) and women (n = 12). INTERVENTION(S): Participants were randomly assigned to the ECC isotonic or CON-ECC isokinetic exercise group and performed a single bout of resistance exercise involving the elbow flexors. MAIN OUTCOME MEASURE(S): Measurements of elbow flexion and extension, isometric strength, and muscle point tenderness were obtained before exercise (baseline) and during follow-up sessions (days 2, 4, 7, and 14). Separate 1-way analyses of variance and repeated-measures analyses of variance were used to determine outcome differences. Tukey post hoc testing was performed when indicated.
resultsAt baseline, no differences were present between groups for any measure. The ECC isotonic exercise protocol resulted in a 30% to 36% deficit in muscle strength, a 5% to 7% reduction in elbow flexion, and a 6% to 8% reduction in elbow extension at follow-up days 2 and 4 (P < .01). The CON-ECC isokinetic exercise protocol did not alter muscle strength or range of motion at any time when compared with baseline. Muscle point tenderness increased from baseline on days 2 and 4 in both groups (P < .05) but was not different between groups throughout the recovery period.
conclusionsOur results indicated more pronounced functional deficits occurred after a single bout of ECC isotonic exercise than with a CON-ECC isokinetic exercise protocol matched for training volume.
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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.