A cross-sectional correlational study of the Dynamic Strength Index with the slope of the force-velocity profile in the loaded countermovement jump.

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dc.contributor.authorScheller, Coleman
dc.contributor.examiningcommitteeDuhamel, Todd (Kinesiology and Recreation Management) Peeler, Jason (Human Anatomy and Cell Science)en_US
dc.contributor.supervisorCornish, Stephen (Kinesiology and Recreation Management)en_US
dc.date.accessioned2019-08-29T17:34:06Z
dc.date.available2019-08-29T17:34:06Z
dc.date.issued2019en_US
dc.date.submitted2019-08-24T20:31:09Zen
dc.degree.disciplineKinesiology and Recreation Managementen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractStrength and conditioning professionals require time efficient and effective means of evaluating the characteristics of muscular force expression among athletes. Two such methods, the DSI and the lower-body F-v profile, are used to guide the direction of training towards more velocity-dependent (i.e. ballistic strength) methods of training or towards more force-dependent (i.e. maximal strength) methods of training. While the use of both of these protocols have been recommended in the literature for a similar purpose, little research has been done in evaluating the relationship between the results of both protocols. Eighty-six resistance-trained individuals were recruited to perform both the DSI testing and F-v profile testing protocols to evaluate this relationship, as well as relationships between the components that compose each test. Correlations were calculated between DSI, F-v profile slope, countermovement jump (CMJ) peak force (PF), isometric mid-thigh pull (IMTP) PF, and CMJ peak velocity (PV) across a series of loading conditions from an unloaded CMJ to an additional 100% bodyweight (BW) CMJ condition. No significant correlations were found between the DSI value and the F-v profile slope. Significant correlations (p<0.05) were found between the DSI and CMJ/IMTP PF. Significant correlations (p<0.05) were found between CMJ/IMTP PF and measures of CMJ PV across the loading conditions. These results suggest that the DSI is not correlated to the F-v profile slope, however measures of performance used for the evaluations are significantly correlated.en_US
dc.description.noteOctober 2019en_US
dc.identifier.urihttp://hdl.handle.net/1993/34106
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectIsometric mid-thigh pullen_US
dc.subjectDynamic strength indexen_US
dc.subjectForce-velocity profileen_US
dc.subjectCountermovement jumpen_US
dc.subjectBallistic strengthen_US
dc.subjectIsometric strengthen_US
dc.titleA cross-sectional correlational study of the Dynamic Strength Index with the slope of the force-velocity profile in the loaded countermovement jump.en_US
dc.typemaster thesisen_US
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