Wolfard, R. (2016) Effect of different volume and intensities of a conditioning activity on the magnitude and duration of the post-activation potentation effect. thesis, Sport Sciences.
Full text available on request.Abstract
High-intensity resistance exercises such as the squat may induce post-activation potentiation, thereby increasing performance in subsequent muscular events such as weightlifting, sprinting or jumping. There has been no studies yet on how differences in the volume and intensity of the pre-load stimulus may affect both the magnitude and duration of the PAP effect. Therefore, this study tested how one set of three repetition and three sets of three repetitions at either 75% or 90% affected squat jump performance. Eight male subjects completed five laboratory sessions on five separate days. A squat 1RM was determined on day one, as well as a baseline squat jump height. In the other four sessions, a baseline jump height was determined, and after a break the subjects performed one of the protocols in random order, after which squat jump height was assessed at 8 different time points: ~30 seconds, and at 1, 2, 4, 6, 8, 10, 12 minutes after the protocol. There were no significant time effects for all of the protocols. Individual analysis show that performance was decreased up to 1 minute after the stimulus. No performance enhancements were found for the group as a whole. Three of the eight subjects were affected by PAP, and jumped higher than their baseline as a result. It was concluded that the used protocols were not reliable in inducing PAP, and that individual assessment of an athlete’s response to a pre-load is of paramount importance if the goal is to enhance muscular power.
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Faculty: | Medical Sciences |
| Date Deposited: | 04 May 2022 08:37 |
| Last Modified: | 04 May 2022 08:37 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3213 |
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