{
  "abstract": "Introduction\n\nMuscle fatigue is characterized by a reduction in the muscle's ability to generate force during voluntary contractions and can be assessed using surface electromyography (EMG) through the parameters of median frequency (MF) and root mean square (RMS).Objective\n\nThis study aimed to compare the Median Frequency (MF) and Root Mean Square (RMS) values of the masseter and anterior temporalis muscles between women diagnosed with myogenic Temporomandibular Disorder (TMD) and asymptomatic women during a sustained submaximal bilateral bite task on the molars.Methods\n\nThis cross-sectional study included 86 women, distributed into TMD and Control groups based on DC/TMD diagnosis. The angulation coefficient (β) of the linear regression line of the RMS and MF was evaluated in the submaximal bilateral molar bite task at 50% of the maximum bite force for 30 s.Results\n\nA negative intragroup β coefficient was observed for MF in all muscles in both groups (p < 0.001 for all), indicating a decline in MF over time. A positive intragroup β coefficient was observed for RMS in all muscles in both groups, indicating an increase in RMS over time. The Control Group showed a significantly greater negative β coefficient for MF in the right masseter (p = 0.01) and left masseter (p = 0.01) muscles, indicating a steeper decline in MF during the fatigue protocol, and a significantly greater positive β coefficient for RMS in the left anterior temporalis muscle (p = 0.01), indicating a steeper increase in RMS, compared to the TMD Group.Conclusion\n\nThe long-duration submaximal bite task produced signs of muscle fatigue in both groups; however, signs of fatigue were significantly more pronounced in the Control Group, specifically in the masseter muscles (MF decline) and the left anterior temporalis muscle (RMS increase), challenging our initial hypothesis of greater fatigue in the myogenic TMD Group.",
  "abstract_shown": true,
  "affiliations": [
    "Graduate Program in Physical Therapy, State University of Northern Paraná - UENP - Jacarezinho (PR), Jacarezinho, Brazil.",
    "Post-Graduate Program in Oral and Maxillofacial Surgery, Piracicaba Dental School, State University of Campinas - UNICAMP, Piracicaba, Brazil.",
    "Hospital Sírio-Libanês, Teaching and Research Institute, São Paulo, Brazil.",
    "Albert Einstein College of Health Sciences, São Paulo, Brazil.",
    "Department of Oral Diagnosis, Oral and Maxillofacial Surgery Division, Piracicaba Dental School, State University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil.",
    "Post-Graduate Program in Human Movement Sciences, Methodist University of Piracicaba - UNIMEP - Piracicaba (SP), Brazil.",
    "Post-Graduate Program in Oral and Dental Biology, Piracicaba Dental School, State University of Campinas - UNICAMP - Piracicaba (SP), Brazil."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Paulo Fernandes Pires"
    },
    {
      "affs": [
        1
      ],
      "name": "Elisa Bizetti Pelai"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Samara Caroline Fernandes Galvani"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Bianca Pulino"
    },
    {
      "affs": [
        4
      ],
      "name": "Marcio de Moraes"
    },
    {
      "affs": [
        5
      ],
      "name": "Ester Moreira de Castro-Carletti"
    },
    {
      "affs": [
        5
      ],
      "name": "Fabiana Foltran-Mescollott"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Raphael Capelli Guerra"
    },
    {
      "affs": [
        6
      ],
      "name": "Delaine Rodrigues-Bigaton"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6jghxc3f3wgzq.bib",
  "cited_by": 0,
  "doi": "10.3389/fpain.2026.1962220",
  "fulltext_url": "https://europepmc.org/articles/PMC13687414",
  "id": "6jghxc3f3wgzq",
  "issns": [
    "2673-561X"
  ],
  "landing_url": "https://europepmc.org/article/MED/42923400",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3603|Temporomandibular Joint Disorders"
    ]
  ],
  "openalex": "W7220937162",
  "pdf_url": "https://europepmc.org/articles/PMC13687414?pdf=render",
  "pmcid": "PMC13687414",
  "pmid": "42923400",
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6jghxc3f3wgzq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:33Z",
      "native_id": "MED:42923400",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42923400"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "journal-openalex:F27",
      "subfield": "general"
    }
  ],
  "title": "Comparison of MF and RMS EMG parameters in women with TMD and asymptomatic women during sustained bilateral submaximal bite force protocol.",
  "title_text": "Comparison of MF and RMS EMG parameters in women with TMD and asymptomatic women during sustained bilateral submaximal bite force protocol.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:20:33Z",
  "url": "https://research.draconitic.com/paper/6jghxc3f3wgzq",
  "venue": "Frontiers in pain research (Lausanne, Switzerland)",
  "versions": []
}