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Determining Stroke and Movement Profiles in Competitive Tennis Match-Play From Wearable Sensor Accelerometry.
Perri, Thomas; Reid, Machar; Murphy, Alistair; Howle, Kieran; Duffield, Rob.
Affiliation
  • Perri T; School of Sport, Exercise and Rehabilitation, Faculty of Health, University of Technology Sydney, NSW, Australia.
  • Reid M; Tennis Australia, Melbourne, Australia ; and.
  • Murphy A; Tennis Australia, Melbourne, Australia ; and.
  • Howle K; Tennis Australia, Melbourne, Australia ; and.
  • Duffield R; Catapult Sports, Melbourne, Australia.
J Strength Cond Res ; 37(6): 1271-1276, 2023 Jun 01.
Article in En | MEDLINE | ID: mdl-35916877
ABSTRACT: Perri, T, Reid, M, Murphy, A, Howle, K, and Duffield, R. Determining stroke and movement profiles in competitive tennis match-play from wearable sensor accelerometry. J Strength Cond Res 37(6): 1271-1276, 2023-This study determined stroke and movement accelerometry metrics from a wearable sensor and compared between court surface (grass vs. hard) and match outcome (win vs. loss) during competitive tennis match-play. Eight junior high-performance tennis players wore a trunk-mounted global positioning system, with in-built accelerometer, magnetometer, and gyroscope during singles matches on hard and grass courts. The manufacturer software calculated accelerometer-derived total player load (tPL). A prototype algorithm classified forehands, backhands, serves, and "other" strokes, thereby calculating stroke PL (sPL) from individual strokes. Movement PL (mPL) was calculated as the difference between tPL and sPL, with all metrics reported as absolute and relative (min -1 , %, and ·stroke). Analysis of accelerometer load and stroke count metrics was performed through a two-way (surface [grass vs. hard] × match outcome [win vs. loss]) analysis of variance ( p < 0.05) and effect sizes (Cohen's d ). No interaction effects for surface and match outcome existed for absolute tPL, mPL, and sPL ( p > 0.05). Increased mPL% featured on grass courts, whereas sPL% was increased on hard courts ( p = 0.04, d = 1.18[0.31-2.02]). Elevated sPL·min -1 existed on hard courts ( p = 0.04, d = 1.19[0.32-2.04]), but no differences in tPL·min -1 and mPL·min -1 were evident for surface or outcome ( p > 0.05). Relative forehand sPL (FH-sPL·min -1 ) was higher on hard courts ( p = 0.03, d = 1.18[0.31-2.02]) alongside higher forehand counts ( p = 0.01, d = 1.29[0.40-2.14]). Hitting demands are heightened on hard courts from increased sPL and counts. Conversely, increased mPL% on grass courts likely reflects the specific movement demands from point-play. Physical preparation strategies during training blocks can be tailored toward movement or hitting loads to suit competitive surfaces.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Tennis / Athletic Performance / Wearable Electronic Devices Limits: Humans Language: En Journal: J Strength Cond Res Journal subject: FISIOLOGIA Year: 2023 Document type: Article Affiliation country: Australia Country of publication: United States

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Tennis / Athletic Performance / Wearable Electronic Devices Limits: Humans Language: En Journal: J Strength Cond Res Journal subject: FISIOLOGIA Year: 2023 Document type: Article Affiliation country: Australia Country of publication: United States