Abstract
Accelerometry-derived exercise dose (intensity × duration) was assessed throughout a competitive basketball season. Nine elite basketballers wore accelerometers during a Yo-Yo intermittent recovery test (Yo-Yo-IR1) and during three two-week blocks of training that represented phases of the season defined as easy, medium, and hard based on difficulty of match schedule. Exercise dose was determined using accumulated impulse (accelerometry-derived average net force × duration). Relative exercise intensity was quantified using linear relationships between average net force and oxygen consumption during the Yo-Yo-IR1. Time spent in different intensity zones was computed. Influences of match schedule difficulty and playing position were evaluated. Exercise dose reduced for recovery and pre-match tapering sessions during the medium match schedule. Exercise dose did not vary during the hard match schedule. Exercise dose was not different between playing positions. The majority of activity during training was spent performing sedentary behaviour or very light intensity activity (64.3 ± 6.1%). Front-court players performed a greater proportion of very light intensity activity (mean difference: 6.8 ± 2.8%), whereas back-court players performed more supramaximal intensity activity (mean difference: 4.5 ± 1.0%). No positional differences existed in the proportion of time in all other intensity zones. Objective evaluation of exercise dose might allow coaches to better prescribe and monitor the demands of basketball training.
Highlights
Training sessions contribute substantially to the total volume of exercise that basketball players receive during the competitive season [1]. the exercise dose during basketball match-play has been extensively examined [2,3,4,5,6,7], the exercise dose associated with training sessions remains largely unreported [8]
The present study identified that the majority of exercise during basketball training
Previous time-motion analyses have identified lower proportions of live match-play standing, walking) [6,9]. These findings suggest that basketball training sessions are performing low-intensity recovery activities
Summary
Training sessions contribute substantially to the total volume of exercise that basketball players receive (exercise dose; product of exercise intensity and duration) during the competitive season [1]. the exercise dose during basketball match-play has been extensively examined [2,3,4,5,6,7], the exercise dose associated with training sessions remains largely unreported [8]. One study to date has investigated the exercise dose received by players during the in-season phase of a basketball training program [1]. The results from this study showed that match schedule (i.e., no match, one match, or two matches per week) influences the exercise dose received by players [1]. These data were collected from only one two-week block during the in-season phase of competition. No research to date has investigated the exercise dose received by players throughout multiple phases of a competitive basketball season
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