Premium
FDG‐PET detects nonuniform muscle activity in the lower body during human gait
Author(s) -
Kindred John H.,
Ketelhut Nathaniel B.,
Benson JohnMichael,
Rudroff Thorsten
Publication year - 2016
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25116
Subject(s) - anatomy , medicine , positron emission tomography , gait , skeletal muscle , iliopsoas muscle , physical medicine and rehabilitation , nuclear medicine , surgery , abscess
: Nonuniform muscle activity has been partially explained by anatomically defined neuromuscular compartments. The purpose of this study was to investigate the uniformity of skeletal muscle activity during walking. Methods : Eight participants walked at a self‐selected speed, and muscle activity was quantified using [ 18 F]‐fluorodeoxyglucose positron emission tomography imaging. Seventeen muscles were divided into 10 equal length sections, and within muscle activity was compared. Results : Nonuniform activity was detected in 12 of 17 muscles (ƒ > 4.074; P < 0.046), which included both uni‐ and multi‐articular muscles. Greater proximal activity was detected in 6 muscles ( P < 0.049), and greater distal versus medial activity was found in the iliopsoas ( P < 0.042). Conclusions : Nonuniform muscle activity is likely related to recruitment of motor units located within separate neuromuscular compartments. These findings indicate that neuromuscular compartments are recruited selectively to allow for efficient energy transfer, and these patterns may be task‐dependent. Muscle Nerve 54 : 959–966, 2016