{
  "abstract": "Objective: To compare complete-cycle lower-limb coordination-pattern distributions and frequency-band-specific trunk–lower limb intermuscular coherence during a standardized badminton backhand footwork–backhand-clear task between elite and amateur players.\n\nMethods: Thirty-six male badminton players were classified into elite and amateur groups (n=18 each). Each participant completed 10 valid trials. Three-dimensional kinematics and surface electromyography were synchronously recorded using Qualisys and Delsys Trigno systems. Continuous relative phase waveforms were summarized as four coordination-pattern percentages for the hip–knee, hip–ankle, and knee–ankle pairs. Intermuscular coherence was quantified as the area of significant coherence (AZ) for 21 trunk–lower limb muscle pairs across α, β, and γ bands. Trial-level linear mixed-effects models included group, trial, and their interaction as fixed effects and participant as a random intercept. Years of badminton training were not included as a covariate, as the objective was to compare competitive-level groups within their existing training backgrounds. Benjamini–Hochberg false discovery rate (FDR) correction was applied separately to 12 coordination and 63 coherence comparisons.\n\nResults: After FDR correction, elite players showed higher hip–knee in-phase and lower anti-phase proportions, higher proximal-dominant and lower distal-dominant proportions for hip–ankle and knee–ankle coordination, and a higher knee–ankle anti-phase proportion (all q=0.025). Although 23 coherence comparisons had raw P<0.05, none survived FDR correction (all q≥0.098).\n\nConclusion: Elite and amateur players differed in selected complete-cycle coordination-pattern distributions, with greater proximal contribution to hip–ankle and knee–ankle coordination in elite players. No muscle-pair–frequency-band coherence difference remained significant after FDR correction. These task-specific, cross-sectional findings do not identify the timing of coordination differences, establish causal effects of training, or demonstrate competitive-level associations independent of training duration.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Physical Education, Xinjiang Second Medical College, Karamay, China",
    "Department of Basic Education, Xinjiang Institute of Political Science and Law, Tumushuke, Xinjiang, China"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Hongbing Xie"
    },
    {
      "affs": [
        1
      ],
      "name": "Hangyuan Li"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5zv7zwyd3vrca.bib",
  "cited_by": 0,
  "doi": "10.3389/fphys.2026.1922514",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13730880/",
  "id": "5zv7zwyd3vrca",
  "issns": [
    "1664-042X"
  ],
  "landing_url": "https://doi.org/10.3389/fphys.2026.1922514",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Original Research"
    ],
    [
      "openalex",
      "2204|Muscle activation and electromyography studies"
    ]
  ],
  "openalex": "W7223116029",
  "pdf_url": "https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2026.1922514/pdf",
  "pmcid": "PMC13730880",
  "pmid": "42984643",
  "published": "2026-10-21",
  "publisher": "Frontiers Media SA",
  "ris": "https://research.draconitic.com/paper/5zv7zwyd3vrca.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T12:23:51Z",
      "native_id": "PMC13730880",
      "source": "pmc",
      "url": "https://doi.org/10.3389/fphys.2026.1922514"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "journal-openalex:F27",
      "subfield": "general"
    }
  ],
  "title": "CRP-derived lower-limb coordination pattern distributions and frequency-band trunk–lower limb intermuscular coherence during badminton backhand footwork: a cross-sectional study",
  "title_text": "CRP-derived lower-limb coordination pattern distributions and frequency-band trunk–lower limb intermuscular coherence during badminton backhand footwork: a cross-sectional study",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:21:11Z",
  "url": "https://research.draconitic.com/paper/5zv7zwyd3vrca",
  "venue": "Frontiers in Physiology",
  "versions": []
}