Author

Darla M. Zisk

Publication Date

1991

Document Type

Dissertation/Thesis

First Advisor

Plowman, Sharon A.

Degree Name

M.S. Ed. (Master of Education)

Department

Department of Physical Education

LCSH

Exercise--Physiological aspects||Jumping--Physiological aspects

Abstract

The purpose of this study was to examine the physiological cost of plyometric rebound jumping at varied intensities. The subjects were 34 male (n=30) and female (n=4) undergraduates (X = 21.2 ± 0.34 years). The subjects, who were enrolled in a weight training class, had weight trained for eight weeks and had participated in two plyometric training sessions prior to the study. All jumping exercises were completed on a sixteen inch box (40.64 cm) and involved thirty seconds of jumping followed by thirty seconds of rest for five sets. Three protocols, self selected (SS), 15 jumps per set (15J/S), and 18 jumps per set (18J/S), were performed in random order on separate testing days. A repeated measures ANOVA and Tukey’s post hoc test were used to analyze the data. Oxygen cost for SS and 18J/S (SS = 38.94; 15J/S = 35.90; 18J/S = 39.22 ml kg'1min‘1) were significantly higher than 15J/S ( p < .05). Blood lactic acid concentration was significantly greater for the SS (9.2 mMoles) and 18J/S (8.4 mMoles) than for the 15J/S (6.8 mMoles) (p < .05). The mechanical efficiency was significantly higher for the SS (22%) than for 15J/S (18%) or 18J/S (19%) (p < .05). There was no significant difference between heart rates (SS = 174 ± 10.92; 15J/S = 17 + 10.89; 18J/S = 176 ± 10.38 bpm). The RPE for SS (6.5) and 18J/S (7.2) was higher than for 15J/S (5.3) (p < .05). The data revealed that plyometric rebound jumping is an efficient, metabolically demanding form of exercise. The SS and 18J/S paces placed the greatest demands on both the aerobic and anaerobic energy systems.

Comments

Includes bibliographical references (pages [20]-21)

Extent

39 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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