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Title:Maximum Isometric Force Production Characteristics in Five Muscle Groups in Physically Active Young, Middle-Aged, and Older Men
Author(s):Going, Scott Brian
Department / Program:Physical Education
Discipline:Physical Education
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Education, Physical
Abstract:The purpose of this study was to ascertain what similarities and differences in muscle function were evident among young (19-32 yrs), middle-aged (39-54 yrs) and older men (57-73 yrs), and whether the differences in function were independent of physique. Physique was assessed from measures of body size, anatomical proportions, and body composition. Significant mean differences were found among age groups in height ((DELTA) = 2.6-3.6 cm), weight ((DELTA) = 3.8-5.8 kg), limb and trunk circumferences ((DELTA) = 0.7-10.3 cm), skeletal dimensions ((DELTA) = 0.02-1.7 cm), skinfold thicknesses ((DELTA) = 0.7-3.1 mm) and body potassium content ((DELTA) = 4.4-16.8 gm). Muscle function was assessed in terms of the static force production capacity of the finger flexors, thumb abductors, forearm extensors, plantar flexors and dorsiflexors, reflected by variables representing parameters of force, time, rate of force production, and cumulative force over time (impulse). Significant mean differences in at least 4 of 5 muscle groups were found among age groups for different aspects of force production including maximum force ((DELTA) = 11.6-22.2%), maximum rate ((DELTA) = 19.6-36.7%), cumulative force for 100 ms ((DELTA) = 10.7-28.6%), and total cumulative force ((DELTA) = 22.7-31.6%), with young and middle-aged men having greater force production capabilities than older men. The differences in force production among age groups remained significant after removing, statistically, differences in physique. It was concluded that differences in force production among age groups cannot be explained solely on the basis of physique.
Issue Date:1986
Type:Text
Description:360 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1986.
URI:http://hdl.handle.net/2142/71882
Other Identifier(s):(UMI)AAI8610929
Date Available in IDEALS:2014-12-16
Date Deposited:1986


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