Biomaterial Database

A comparison of voluntary versus stimulated strength training of the human adductor pollicis muscle. 1998

N Lyle, and O M Rutherford

Department of Physiology, Imperial College School of Medicine, London, UK.

The effects of voluntary versus electrically stimulated isometric strength training of the adductor pollicis on muscle strength were compared. The adductor pollicis of one hand was trained using voluntary contractions at 50% of the maximum voluntary contraction force, and the other with 30 Hz tetani (stimulated contractions), which produced a force equivalent to 30-50% of the maximum voluntary force. Tetani were delivered with surface electrodes placed over the ulnar nerve at the wrist. Both protocols resulted in large, significant increases in maximum voluntary strength of 79+/-44% (voluntary) and 74+/-41% (stimulated) (mean+/-s; P< 0.002). The time course of the changes was very similar for both protocols and there was no significant difference between the strength increases produced by the two protocols. The large gains resulting from stimulated training argues against central adaptations as a major contributor to the strength increases following training.

UI	MeSH Term	Description	Entries
D007537	Isometric Contraction	Muscular contractions characterized by increase in tension without change in length.	Contraction, Isometric,Contractions, Isometric,Isometric Contractions
D008297	Male		Males
D010806	Physical Education and Training	Instructional programs in the care and development of the body, often in schools. The concept does not include prescribed exercises, which is EXERCISE THERAPY.	Education, Physical,Physical Education,Physical Education, Training
D004558	Electric Stimulation	Use of electric potential or currents to elicit biological responses.	Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D005260	Female		Females
D006225	Hand	The distal part of the arm beyond the wrist in humans and primates, that includes the palm, fingers, and thumb.	Hands
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000704	Analysis of Variance	A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.	ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses
D018482	Muscle, Skeletal	A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.	Anterior Tibial Muscle,Gastrocnemius Muscle,Muscle, Voluntary,Plantaris Muscle,Skeletal Muscle,Soleus Muscle,Muscle, Anterior Tibial,Muscle, Gastrocnemius,Muscle, Plantaris,Muscle, Soleus,Muscles, Skeletal,Muscles, Voluntary,Skeletal Muscles,Tibial Muscle, Anterior,Voluntary Muscle,Voluntary Muscles