Document Type

Poster

Abstract

PURPOSE: Stretching is part of a dynamic warm-up that is commonly used in preparation for a number of different sporting events. Previous research suggests that stretching may decrease musculotendinous stiffness which has a possibility to cause an increase in slack of the tendon, therefore, decreasing the speed of force from muscle to bone. The aim of this study was to was to assess three independent stretching protocols and their effect on the rate of force development. METHODS: Ten male and nine female subjects (20 3 years) from the Bethel University basketball teams participated in the study. Subjects were randomly assigned to perform three different stretching protocols on separate days: non-stretching (NS), static stretching (SS), and ballistic stretching (BS). For each stretching protocol, subjects performed a pre- and post- sit and reach test. Once the stretching protocol was complete, a four minute rest period took place. After this, five jump measurements were measured consisting of the countermovement jump (CMJ) for speed (cm/s) and power (W/kg) output measurements, standing vertical jump (cm), three-step vertical jump (cm), and broad jump (cm). A triaxial accelerometer (Myotest, Switzerland) was used to determine rate of force development (RFD), which then was compared to the vertical and broad jump measurements to determine if the stretching may have caused tendon elongation that would affect their RFD and, therefore, disrupted neuromuscular communication. Each subject completed their testing within three weeks from the initial visit. RESULTS: One-Way ANOVA analysis using SPSS software demonstrated no significance (p

Date Accepted/Awarded

5-10-2017

Comments

Associated course: Poster presented at the HAS495 Biokinetics Symposium

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