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Muscle Pain and Low-Frequency Fatigue After Isometric Contractions
Full Title
Low-frequency fatigue and muscle pain after eccentric and isometric muscle contractions
Summary
This study examined the effects of eccentric and isometric contractions on muscle pain and fatigue. Isometric contractions performed at longer muscle lengths were found to produce greater low-frequency fatigue and delayed muscle soreness, despite generating less peak force. Pain did not occur during the contractions but appeared later, particularly during movement or muscle stretching. These findings support the concept that damage from isometric loading can go unnoticed at the time of strain but become symptomatic afterward.