The Relationships Among Isokinetic Endurance, Initial Strength Level, and Fiber Type

Motor unit firing behavior during prolonged 50% MVC dorsiflexion contractions in young and older adults

“…For example, in the tibialis anterior, it is estimated that in young individuals the muscle fibers are approximately 80% fast twitch, while in older subjects the percentage of fast-twitch muscle fibers is reduced to approximately 70% (Jakobsson et al, 1990). However, the relationship between fatigability and muscle fiber type is poor (Clarkson et al, 1982b;Clarkson et al, 1982a;Tesch and Wright, 1983), suggesting that characteristics other than fiber type account for differences in fatigability between young and older adults.…”

Isokinetic Dynamometry in Elderly Women Undergoing Total Knee Arthroplasty: A Comparative Study

“…Therefore, this measurement would not provide supplementary or more accurate information than that obtained using our type of evaluation. Although Clarkson et al 30 emphasized the high correlation between measure-ments of maximum torque and perimetral measurements, these measurements depend on many variables (such as the kind of measuring tape employed, the limb site where the measurement is made, the tension applied during the measurement, the size of the panniculus adiposus, and hormone variations), which makes it difficult to compare these values with others from scientific studies and compromises their reproducibility. It was very difficult to compare the results from this study with data found in the literature, due to the small number of published articles concerning isokinetic dynamometry in women undergoing total knee arthroplasty.…”

Isokinetic Leg Flexion and Extension Strength of Elite Adolescent Female Track and Field Athletes

“…M a n y studies have investigated various aspects of muscular strength (Atha, 1981;Capen, 1950;Chui, 1950;Clarke, 1973;Clarke & Monroe, 1970;Clarkson et al, 1982;Costill, Miller, Myers, Kehoe, & Hoffman, 1968;Gilliam, Sady, Freedson, & Villanacci, 1979;Haymes & Dickinson, 1980;Jackson, 1971;Lauback, 1969;Liba, 1967;Mayhew & Gross, 1974;Tuttle, Janney, & Thompson, 1950;Vodak, Savin, Haskell, & Wood, 1980). These studies have consistently found muscular strength to be related to the performance of motor activities.…”