Joint angles during early sprint acceleration with wearable resistance among Australian Rules football players

Rapid acceleration is an important quality for field-based sport athletes. Technical factors contribute to greater acceleration and these can be deliberately influenced by coaches through implementation of constraints, which afford particular coordinative states or induce variability generally. Lightweight wearable resistance is an emerging training tool, which can act as a constraint on acceleration. At present, however, the effects on whole-body coordination resulting from different WR configurations and magnitudes are unknown. To better understand these effects, five male Australian Rules football athletes performed a series of 20 m sprints with either relatively light or heavy wearable resistance applied to the anterior or posterior aspects of the thighs or shanks. Whole body coordination during one complete stride in early acceleration was examined across eight wearable resistance conditions and compared with baseline (unresisted) acceleration coordination using group- and individu..., Study design 
Testing was undertaken in the Biomechanics Laboratory at Victoria University, Footscray Park, Melbourne, Australia. Five participants attended the laboratory on 10 occasions in total, comprising one familiarisation session, one baseline testing session, and eight WR testing sessions. Each testing session was separated by at least 1 week. During testing sessions, participants performed four maximal 20 m sprints commencing from a stationary position, interspersed with 3 min rest periods. During WR testing sessions, participants were exposed to one of eight unique WR loading configurations and magnitudes when performing sprints 2-4. The order of exposure to each WR loading configuration and magnitude was randomised. In each sprint, 10 m split and 20 m sprint times were recorded, and whole-body spatiotemporal measures and joint kinematics were captured at the 4 m mark to examine coordination during the early acceleration phase of sprinting.
Experimental setup
A 20 m section of..., , # Joint angles during early sprint acceleration with wearable resistance among Australian Rules football players

[https://doi.org/10.5061/dryad.p2ngf1vxf](https://doi.org/10.5061/dryad.p2ngf1vxf)

1) Spatiotemporal data for five Australian Rules football players during steps 3 and 4 of a 20 m maximal sprint. Experimental conditions are baseline (no added resistance) and the following wearable resistance configurations: Heavy posterior thigh, heavy anterior thigh, light posterior thigh, light anterior thigh, heavy posterior shank, heavy anterior shank, light posterior shank, light anterior shank.
2) Whole body joint kinematic data for five Australian Rules football players during steps 3 and 4 of a 20 m maximal sprint under all experimental conditions.

## Description of the data and file structure

Participants are designated by P1-P5. 10 m and 20 m splits were obtained from infrared timing gates. For each sprint, participants adopted a self-selected 2-point upright starting stance wit...