title: Assessing explosive power production using the backward overhead shot throw and the effects of morning resistance exercise on afternoon performance.
abstract: The purpose of this study was to determine if performing a morning total-body resistance exercise workout affects explosive power in an afternoon session. The secondary goal was to assess the usefulness of the backward overhead shot throw (BOST) as a measure of explosive power in experienced thrower in the sport of athletics. Throwers (N = 14) performed 1 control and 1 experimental trial on separate days. The control consisted of BOST and a vertical jump (VJ) testing performed in the afternoon. For the experimental trial, the participants reported for a short resistance training session in the morning then repeating the BOST and VJ testing 4-6 hours later. The BOST distance (meters) and VJ peak power (watts) were correlated in both trials (r ∼ 0.64, p < 0.05). The BOST distance improved in experimental trial over control (p < 0.05), but VJ power failed to improve. The results indicate that a morning resistance exercise bout can improve competitive throwing performance later on the same day. The results also suggest that BOST may be a useful performance testing tool for throwers in the sports of athletics.
authors.affiliation: University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
authors.forename: Laura G
authors.initials: LG
authors.lastname: Ekstrand
authors.forename: Claudio L
authors.initials: CL
authors.lastname: Battaglini
authors.forename: Robert G
authors.initials: RG
authors.lastname: McMurray
authors.forename: Edgar W
authors.initials: EW
authors.lastname: Shields
mesh_terms: D001132:Arm / Q000502:physiology*; D001696:Biomechanical Phenomena; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D055070:Resistance Training; D013997:Time Factors; D055815:Young Adult