Paul Hoffman has read and researched several research papers on sprinting and performance articles, so you don’t have to. If any of these articles interest you, feel free to research the case studies and methodology and come up with your own conclusions.
Click on the link to the original reference, where applicable
Hågen Fjørkenstad Dybdal, Roland van den TillaarDepartment of Sports Science and Physical Education, Nord University, Levanger, Norway
The main findings were that sprinting with the SpeedMakerTM increased sprint times by 1.7% compared to normal 30-m sprints. However, no occurrence of an elicited PAP response was found when performing a 30-m sprint with the SpeedMakerTM prior to a normal 30-m sprint in male soccer players. Furthermore, no detectable differences were found in the step-by-step analysis on kinematics and muscle activity between the sprints with and without the SpeedMakerTM.
December 2018, Eric Rawson
No adverse effects have been documented. There are many muscular and neurological benefits.
Gareth Irwin. Journal of Sports Biomechanics. 2020
The study showed that if sufficient trials are available, step-to-step changes in shank and trunk angles might provide an appropriate measure to detect sprint phases in applied settings.
Uthoff, Aaron. Journal of Strength and Conditioning Research, 2020.
This study showed benefits to backward running training.
Maria Madueno. Journal of Sports Medicine and Physical Fitness. 2019.
Active recovery applied between running repeated-sprints provides greater physiological stress than passive recovery and may be a useful training overload strategy to promote physiological adaptation.
Dylan Hicks, MSc. Flinders Univ. S. Australia.
This suggests that AST may not provide any greater transfer than a standard maximal sprinting protocol, but due to the inconsistencies in the research it should be left to the practitioner to determine whether AST is suitable.
Journal of Sports Sciences. Pedro Jiminez-Reyes, 2018.
These results suggest that the CMJ test may allow more accurate setting of training loads in sprint training sessions, by using an individualised sprint dose based on mechanical and physiological responses rather than a standard fixed number of sprints for all athletes.
Gareth Sandford. Sports Medicine, 2019.
”Here, we argue for the importance of utilising the ASR and MSS measurement to ensure middle-distance runners have the skills to compete in the race-defining surges of modern-day 800 m running”.
Attila Kovacs. Sports Magazine. 2018. University of Wisconsin, La-Crosse.
These findings could potentially contribute to the development of new coaching methods aimed at improving the starting technique of athletes.
Journal of Aging and Physical Activity, Tijs Delabastita, Human Kinetics Journal.
Possibly, decreased Achilles tendon stiffness is caused by altered elastic modulus in older adults. Training interventions increasing Achilles tendon stiffness could improve functional capacity.