Electromyographic analysis of the lower extremity during pedaling

T. M. Mohr, J. D. Allison, R. Patterson

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


EMG activity in the gluteus maximus, rectus femoris, biceps femoris, vastus lateralis, gastrocnemius, and anterior tibialis muscles was studied in six healthy male subjects. Each subject pedaled against changes in workload, pedaling rates, and different weight flywheels, with and without toe clips and from both sitting and standing positions. All the muscles tested were shown to be active at workloads greater than 300 kilograms per minute. In addition, the amplitude of the EMG signals increased with increasing workloads. No real differences in muscle activity timing were found between the light and heavy flywheels or between the competitive and noncompetitive cyclists. Standing while pedaling produced increased activity in the rectus femoris and vastus lateralis at high rpm and low workloads.

Original languageEnglish (US)
Pages (from-to)163-170
Number of pages8
JournalJournal of Orthopaedic and Sports Physical Therapy
Issue number4
StatePublished - Jan 1 1981


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