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Comparison Of Static And Countermovement Jump Variables In Relation To Estimated Training Load And Subjective Measures Of Fatigue, Matthew L. Sams
Comparison Of Static And Countermovement Jump Variables In Relation To Estimated Training Load And Subjective Measures Of Fatigue, Matthew L. Sams
Electronic Theses and Dissertations
The purpose of this study was to compare changes in static and countermovement jump variables across a competitive season of collegiate soccer to estimated training load and subjective measures of fatigue. Monitoring data from 21 male collegiate soccer players were retrospectively examined. Nine vertical jump sessions occurred across the season in addition to daily training load assessment and daily mood-state assessment. Group average changes from the first testing session were calculated and compared to the group average training load for the 7 days preceding each vertical jump testing session for static and countermovement jump height and allometrically scaled peak power. …
Cross-Bridge Mechanisms Of Skeletal Muscle Fatigue: Effects Of Hydrogen Ion, Inorganic Phosphate, And Age, Cassandra Rae Nelson
Cross-Bridge Mechanisms Of Skeletal Muscle Fatigue: Effects Of Hydrogen Ion, Inorganic Phosphate, And Age, Cassandra Rae Nelson
Dissertations (1934 -)
Intense muscle contraction induces high rates of glycolysis and ATP hydrolysis with resulting increases in inorganic phosphate (Pi) and H+, factors thought to induce fatigue by interfering with steps in the cross-bridge cycle. Force inhibition is less at physiological temperatures; thus the role of low pH in fatigue has been questioned. Effects of pH 6.2 and collective effects with 30 mM Pi on the pCa-force relationship were assessed in skinned fast and slow rat skeletal muscle fibers at low (15°C) and near-physiological temperatures (30°C). At Ca2+ levels characteristic of fatigue, low pH significantly depressed force at both temperatures and in …