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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Adipose Tissue, Adult, Body Composition, Data Interpretation, Statistical, Electromagnetic Fields, Electromyography, Femoral Nerve, Humans, Isometric Contraction, Knee Joint, Male, Muscle Contraction, Overweight, Quadriceps Muscle, Recruitment, Neurophysiological, Skinfold Thickness.
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Does fat tissue alter quadriceps response to femoral nerve magnetic stimulation? Context: We investigate the influence that inguinal fat has on maximal quadriceps response to femoral nerve magnetic stimulation. Vastus lateralis M-wave amplitude and quadriceps twitch peak torque were measured (i) in lean and overweight subjects and (ii) when slices of pig fat ranging from 2 to 18 mm in thickness were placed between the coil and the nerve. In overweight group, the maximal response could not be elicited when intensity was ≤90% and ≤85% of maximal power for twitch torque and M-wave amplitude, respectively. The maximal response was obtained at 80% of maximal power in the lean group. Negative correlations between relative twitch torque changes and inguinal thickness were observed. Fat thickness altered quadriceps response at 14 mm and 8 mm in the lean and overweight groups, respectively.
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The capacity of femoral nerve magnetic stimulation to deliver supramaximal stimulation is altered when fat thickness below the coil increases. Final Decision: yes