Plowman, Sharon A.
M.S. Ed. (Master of Education)
Department of Physical Education
Exercise--Physiological aspects; Jumping--Physiological aspects
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.
Zisk, Darla M., "The physiological cost of plyometric rebound jumping at varied intensities" (1991). Graduate Research Theses & Dissertations. 6077.
Northern Illinois University
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Includes bibliographical references (pages -21)