Does Dehydration alter the Success Rate and Technique of Three-Point Shooting in Elite Basketball?

Daniel Dinu (1) , Eve Tiollier (1) , Elsa Leguy (2) , Marine Jacquet (2) , Jean Slawinski (3) , Julien Louis (4)

1 SEP (EA7370) - French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance (EA7370)
2 ESO - École supérieure d'ostéopathie
3 CeRSM - Centre de Recherche sur le Sport et le Mouvement
4 Liverpool John Morres University - LJMU (UK)

In order to better inform the effects of dehydration and hydration guidelines, we tested the acute effects of a 2% dehydration protocol on performance and technique of 3-point shooting (3PS) in Elite Basketball players (n = 9). The 3PS technique was monitored by using nanotechnology inertial measurement units positioned onto body joints during the exercise. When dehydrated (−2.1% ± 0.5% of body mass), 7 players experienced a slight decrease (−10.0% ± 19.6%, p = 0.16) in success rate, while RPE increased from 9.1 ± 2.6 to 13.0 ± 2.5 in euhydrated (EUH) and dehydrated (DEH) condition respectively (p = 0.003). DEH slightly altered the 3PS technique as the knee angle increased (p = 0.02) at toe-off time and the hip angle decreased during the 3PS (p = 0.01). The speed of ball release tended to be increased (p = 0.05) in DEH compared to EUH. Data from this study suggest that a 2% dehydration is tolerable for elite Basketball players, although a stronger dehydration might accentuate the effects observed.

Mots clés: biomechanics; nanotechnology inertial measurement units; body kinematics; performance

Domaines: Physiologie du sport; Biomécanique [physics.med-ph]

Daniel Dinu, Eve Tiollier, Elsa Leguy, Marine Jacquet, Jean Slawinski, et al.. Does Dehydration alter the Success Rate and Technique of Three-Point Shooting in Elite Basketball?. Proceedings, 2018, The 12th Conference of the International Sports Engineering Association, Brisbane, Queensland, Australia 26-29 March 2018, 2 (6), pp.202. ⟨10.3390/proceedings2060202⟩. ⟨hal-01868773⟩