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Intensity-level assessment of lower body plyometric exercises based on mechanical output of lower limb joints.
- Source :
-
Journal of Sports Sciences . May2013, Vol. 31 Issue 8, p894-906. 13p. 1 Diagram, 6 Charts, 1 Graph. - Publication Year :
- 2013
-
Abstract
- The present study aimed to quantify the intensity of lower extremity plyometric exercises by determining joint mechanical output. Ten men (age, 27.3 ± 4.1 years; height, 173.6 ± 5.4 cm; weight, 69.4 ± 6.0 kg; 1-repetition maximum [1RM] load in back squat 118.5 ± 12.0 kg) performed the following seven plyometric exercises: two-foot ankle hop, repeated squat jump, double-leg hop, depth jumps from 30 and 60 cm, and single-leg and double-leg tuck jumps. Mechanical output variables (torque, angular impulse, power, and work) at the lower limb joints were determined using inverse-dynamics analysis. For all measured variables, ANOVA revealed significant main effects of exercise type for all joints (P < 0.05) along with significant interactions between joint and exercise (P < 0.01), indicating that the influence of exercise type on mechanical output varied among joints. Paired comparisons revealed that there were marked differences in mechanical output at the ankle and hip joints; most of the variables at the ankle joint were greatest for two-foot ankle hop and tuck jumps, while most hip joint variables were greatest for repeated squat jump or double-leg hop. The present results indicate the necessity for determining mechanical output for each joint when evaluating the intensity of plyometric exercises. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ANALYSIS of variance
*DYNAMICS
*EXERCISE physiology
*JOINTS (Anatomy)
*LEG
*LONGITUDINAL method
*PROBABILITY theory
*RESEARCH funding
*STATISTICS
*TORQUE
*MATHEMATICAL variables
*PLYOMETRICS
*DATA analysis
*EFFECT sizes (Statistics)
*REPEATED measures design
*DICOM (Computer network protocol)
*EXERCISE intensity
*MOTION capture (Human mechanics)
*DATA analysis software
*DESCRIPTIVE statistics
*INDEPENDENT variables
Subjects
Details
- Language :
- English
- ISSN :
- 02640414
- Volume :
- 31
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of Sports Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 86729062
- Full Text :
- https://doi.org/10.1080/02640414.2012.757342