Passive Stretching and Explosive Jumps Acutely Reduce Spinal Reflex Excitability and Alter Sit-To-Stand Biomechanics in Active Adults.

Sophie A McCauley, Kerry J Mann, Jack Cannon, Michael Chang, Nnamdi Mgbemena, Mehdi Rassafiani, Timothy D Miller

Abstract readRandomized Controlled Trial

In one paragraph

Trial report in Journal of musculoskeletal & neuronal interactions, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Sophie A McCauleySchool of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Bathurst Campus, Australia.

Kerry J MannSchool of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Bathurst Campus, Australia.

Jack CannonSchool of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Bathurst Campus, Australia.

Michael ChangSchool of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Bathurst Campus, Australia.

Nnamdi MgbemenaSchool of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Orange Campus, Australia.

Mehdi RassafianiSchool of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Port Macquarie Campus, Australia.

Timothy D MillerSchool of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Bathurst Campus, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo investigate the acute effects of passive stretching and explosive effort countermovement jumps on spinal reflex excitability and sit-to-stand electromyography patterns and vertical stiffness, in active adults.

methodsA randomised within-participant crossover design was utilised, with 10 males and 10 females completing two separate sessions, each involving three sets of 60-seconds passive stretching (PS) and five sets of 20 explosive effort (EE) countermovement jumps (100 total); measures taken pre-intervention, post-PS and post-EE.

resultsSpinal reflex excitability decreased in both post-PS and post-EE conditions (p < 0.001) compared to pre-condition measures, with no sex effect (p = 0.115). A condition × sex interaction revealed lower spinal reflex excitability in females post-EE (p = 0.002) compared to males. Biomechanically, sit-to-stand vertical stiffness increased in both post-PS and post-EE conditions (p < 0.001) compared to pre-condition, and electromyography patterns were influenced by both condition and sex (p ≤ 0.047).

conclusionsOur findings provide insight into the neurophysiological-biomechanical link warranting further investigation as a potential mechanism contributing to the known sex-based differences in lower limb injury risk, informing our understanding of movement control, rehabilitation, and injury prevention strategies.

Indexed as

Muscle, SkeletalMuscle Stretching ExercisesReflexAdultBiomechanical PhenomenaCross-Over StudiesElectromyographyFemaleHumansMaleYoung AdultH-reflexKinematicsKineticsMotor AdaptationNeuro-mechanics

Identifiers

PMID42675942

PMCPMC13539738

What OpenQuestion holds

Textmetadata

Read underepoch 390

Registered trials

None linked

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.