Authors’ Reply to Cross et al.: Comment on: “The Effectiveness of Resisted Sled Training (RST) for Sprint Performance: A Systematic Review and Meta-analysis”
Thank you for allowing us to respond to the letter by Cross et al. , which we have read with great interest and amazement, given some of the unfounded comments made. First, we must emphasize that the meta-analysis published by Alcaraz et al.  did not intend to analyse the effects of resisted sled training (RST) loading and training status on sprint performance. This meta-analysis performed an updated systematic review to determine the effectiveness of RST on sprint performance, and secondarily, to explain which variables produced a greater improvement in sprint performance in both the acceleration and maximum velocity phases.
Secondly, Cross et al.  criticize the operational basis of our review, when in fact all recommendations in the PRISMA statement  were followed. We clearly formulated the question using systematic and explicit methods to identify, select, and critically appraise relevant research, and collected and analysed data from studies included in...
Compliance with ethical standards
No funding was received to assist in the preparation of this letter.
Conflicts of interest
Pedro Alcaraz, Jorge Carlos-Vivas, Bruno Oponjuru and Alejandro Martínez-Rodríguez declare they have no conflicts of interest relevant to the content of this letter.
- 8.Manchikanti L, Datta S, Smith HS, Hirsch JA. Evidence-based medicine, systematic reviews, and guidelines in interventional pain management: part 6. Systematic reviews and meta-analyses of observational studies. Pain Physician. 2009;12(5):819–50.Google Scholar
- 18.Sheppard JM. Improving the sprint start with strength and conditioning exercises. Mod Athlete Coach. 2004;42(1):18–23.Google Scholar
- 25.Lockie RG, Murphy AJ, Spinks CD. Effects of resisted sled towing on sprint kinematics in field-sport athletes. J Strength Cond Res. 2003;17(4):760–7.Google Scholar
- 28.Alexander RM. Mechanics of skeleton and tendons. Handbook of physiology—the nervous system. Am Physiol Sac. 1981;2:17–42.Google Scholar
- 41.DeWeese BH, Bellon C, Magrum E, Taber CB, Suchomel TJ. Strengthening the springs: improving sprint performance via strength training. Track Tech. 2016;9(3):8–20.Google Scholar