Evidence map›Paper›PMID 34531519›Full record

ArticleScientific reports2021

Basic locomotor muscle synergies used in land walking are finely tuned during underwater walking.

Hikaru Yokoyama, Tatsuya Kato, Naotsugu Kaneko, Hirofumi Kobayashi, Motonori Hoshino, Takanori Kokubun, Kimitaka Nakazawa

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Article
  2. Effects of infrapatellar straps on lower limb muscle synergies during running.Medical & biological engineering & computing · 2025
    Article
  3. Article
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  9. Article
  10. Activity of Spinal Interneurons during Forward and Backward Locomotion.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  11. Article
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.

Hikaru YokoyamaDepartment of Electrical and Electronic Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.
Tatsuya KatoJapan Society for the Promotion of Science, Tokyo, 102-0083, Japan.
Naotsugu KanekoJapan Society for the Promotion of Science, Tokyo, 102-0083, Japan.
Hirofumi KobayashiDepartment of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan.
Motonori HoshinoCollege, National Rehabilitation Center for Persons with Disabilities, Saitama, 359-8555, Japan.
Takanori KokubunDepartment of Physical Therapy, Faculty of Health and Social Services, Saitama Prefectural University, Saitama, 343-8540, Japan.
Kimitaka NakazawaDepartment of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan. nakazawa@idaten.c.u-tokyo.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Underwater walking is one of the most common hydrotherapeutic exercises. Therefore, understanding muscular control during underwater walking is important for optimizing training regimens. The effects of the water environment on walking are mainly related to the hydrostatic and hydrodynamic theories of buoyancy and drag force. To date, muscular control during underwater walking has been investigated at the individual muscle level. However, it is recognized that the human nervous system modularly controls multiple muscles through muscle synergies, which are sets of muscles that work together. We found that the same set of muscle synergies was shared between the two walking tasks. However, some task-dependent modulation was found in the activation combination across muscles and temporal activation patterns of the muscle synergies. The results suggest that the human nervous system modulates activation of lower-limb muscles during water walking by finely tuning basic locomotor muscle synergies that are used during land walking to meet the biomechanical requirements for walking in the water environment.

Indexed as

AdultBiomechanical PhenomenaCentral Pattern GeneratorsHumansImmersionMaleMuscle, SkeletalWalkingWaterWater

Identifiers

PMID34531519
PMCPMC8446023

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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.