snooker {multifamm}

Snooker data

Description

The data are part of a study on the impact of a muscular training program on snooker technique. 25 recreational snooker players were split into treatment (receiving instructions for a training program) and control group (no training program). The data set contains the movement trajectories of the snooker players in two sessions (before and after the training period), where each snooker player repeated a snooker shot of maximal force six times. The interest lies in the movement of hand, elbow, and shoulder on a two-dimensional grid (called X and Y). The trajectories are normalized on a [0,1] time grid and the beginning of the hand trajectories are centered to the origin.

Usage

snooker

Format

A data.frame with 56910 observations and 11 variables:

y_vec

The response values for each observation point.

t

The observations point locations.

n_long

Unique identification number for each curve.

subject_long

Unique identification number for each snooker player.

word_long

Integer specifying the session. 1: Before the training, 2: After the training.

dim

Factor for identifying the univariate dimensions.

combi_long

Number of the repetition of the snooker shot.

covariate.1

Skill level of the snooker player. 0: Unskilled, 1: Skilled.

covariate.2

Group of the snooker player. 0: Control group, 1: Treatment group.

covariate.3

Session indicator. 0: Before the treatment, 1: After the treatment.

covariate.4

Interaction of group and session, i.e. the treatment effect indicator.

Source

Enghofer, T. (2014). Überblick über die Sportart Snooker, Entwicklung eines Muskeltrainings und Untersuchung dessen Einflusses auf die Stoßtechnik. Unpublished Zulassungsarbeit, Technische Universität München.