A Study of Motor Unit Recruitment During Isometric Contractions in Human Muscles


About this study

The purpose of this study is to investigate motor unit recruitment during  isometric contractions in human muscles.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria

  • Control group
    • 21 to 40 years of age
    • Good neuromuscular health
  • Elderly group
    • 40 to 80 years of age
    • Good neuromuscular health


Exclusion Criteria

  • History of central or peripheral neuropathy, myopathy, or musculoskeletal pathology
  • Current use of medications that affect muscle strength (e.g. corticosteroids, statins)
  • History of surgery of the right upper or lower extremities
  • Bleeding disorders
  • Current use of blood-thinning medications

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

Kenton Kaufman, Ph.D.

Closed for enrollment

More information


Publications are currently not available

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