Current Guidelines for the Implementation of Flywheel Resistance Training Technology in Sports: A Consensus Statement
Authors: Beato Marco , de Keijzer Kevin L. , Muñoz-Lopez Alejandro , Raya-González Javier , Pozzo Marco , Alkner Björn A. , Dello Iacono Antonio , Vicens-Bordas Jordi , Coratella Giuseppe , Maroto-Izquierdo Sergio , Gonzalo-Skok Oliver , McErlain-Naylor Stuart A. , Martin-Rivera Fernando , Hernandez-Davo Jose L. , Arrones Luis Suarez , Sabido Rafael , de Hoyo Moises , Fernandez-Gonzalo Rodrigo , Norrbrand Lena 
Published: January 2024

Abstract
Background
Flywheel resistance training has become more integrated within resistance training programs in a variety of sports due to the neuromuscular, strength, and task-specific enhancements reported with this training.

Objective
This paper aimed to present the consensus reached by internationally recognized experts during a meeting on current definitions and guidelines for the implementation of flywheel resistance training technology in sports.

Methods
Nineteen experts from different countries took part in the consensus process; 16 of them were present at the consensus meeting (18 May 2023) while three submitted their recommendations by e-mail. Prior to the meeting, evidence summaries were developed relating to areas of priority. This paper discusses the available evidence and consensus process from which recommendations were made regarding the appropriate use of flywheel resistance training technology in sports. The process to gain consensus had five steps: (1) performing a systematic review of systematic reviews, (2) updating the most recent umbrella review published on this topic, (3) first round discussion among a sample of the research group included in this consensus statement, (4) selection of research group members—process of the consensus meeting and formulation of the recommendations, and (5) the consensus process. The systematic analysis of the literature was performed to select the most up-to-date review papers available on the topic, which resulted in nine articles; their methodological quality was assessed according to AMSTAR 2 (Assessing the Methodological Quality of Systematic Review 2) and GRADE (Grading Recommendations Assessment Development and Evaluation). Statements and recommendations scoring 7–9 were considered appropriate.

Results
The recommendations were based on the evidence summary and researchers’ expertise; the consensus statement included three statements and seven recommendations for the use of flywheel resistance training technology. These statements and recommendations were anonymously voted on and qualitatively analyzed. The three statements reported a score ranging from 8.1 to 8.8, and therefore, all statements included in this consensus were considered appropriate. The recommendations (1–7) had a score ranging from 7.7 to 8.6, and therefore, all recommendations were considered appropriate.

Conclusions
Because of the consensus achieved among the experts in this project, it is suggested that practitioners and researchers should adopt the guidelines reported in this consensus statement regarding the use of flywheel resistance technology in sports.