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- Title
The effect of heel lift inserts on clean jump shrugs and loaded vertical countermovement jumps.
- Authors
Waller, Michael A.; Aghabozorg, Rumin; Campagna, Danny; Shim, Andrew
- Abstract
The use of weightlifting with specific shoes (e.g. weightlifting shoes) have been advocated in the sports of powerlifting (PL) and weightlifting (WL) specifically. These shoes for WL commonly have a flat bottom, are made of solid sole (e,g. wood, hard molded plastic), have a raised heel, and may one or two straps that cross the dorsal side of the metatarsals. The purpose of this study is to examine the effects of heel lifts placed in shoes on the kinetic and kinematic variables of the clean jump shrug (CJS) and loaded countermovement jump (LCMJ). Material and Method. A total of 13 college-age subjects with at least 1 year of weight training experience and free of any skeletal or muscular injuries participated in the study. Subjects performed the CJS and LCMJ in a randomized testing progression utilizing loads with a PVC stick, 30% and 60% 1RM of the CDL and PVC stick, 30% and 60% for the two lifts respectively both with and without heel inserts. Results. All testing variables between test conditions at the corresponding loads demonstrated no statistically significant differences with the exception of CJS peak velocity (PV) with PVC bar only demonstrating a statistically significant difference. Conclusion. The current results suggest the use of heel lifts constructed of hard resin plastic placed in training shoes does not have a statistically significant effect on physical performance.
- Subjects
WEIGHT lifting; PHYSICAL fitness; POWERLIFTING; WEIGHT training; HUMAN kinematics
- Publication
Sports Medicine Journal / Medicina Sportiva, 2020, Vol 16, Issue 2, p3245
- ISSN
1841-0162
- Publication type
Article