Physiological Demands and Muscle Activity of Jockeys in Trial and Race Riding.
Authors: Legg Kylie, Cochrane Darryl, Gee Erica, Macdermid Paul, Rogers Chris
Journal: Animals : an open access journal from MDPI
Summary
# Editorial Summary: Physiological Demands and Muscle Activity of Jockeys in Trial and Race Riding Racing and trial riding impose markedly different physiological and biomechanical demands on jockeys, yet most conditioning programmes fail to distinguish between these contexts—a gap this 2022 study addresses by simultaneously measuring heart rate, body displacement, and muscle activity across eight muscle groups in twelve jockeys during 52 trials and 16 professional races. Races demanded substantially higher cardiovascular intensity (94% HRmax versus 81% in trials) and training impulse scores (7.2 versus 4.4 TRIMP units), with jockeys adopting a lower, more anteriorly shifted centre of mass and displaying significantly greater hamstring activation paired with reduced upper arm engagement. Head displacement patterns differed notably: whilst overall displacement was similar, racing involved greater fore/aft and medio/lateral movement (5.6 and 2.8 cm respectively) compared to the predominantly vertical motion observed in trials (6.7 cm). For practitioners designing conditioning programmes, these findings underscore the inadequacy of trial-riding preparation alone; race-specific training targeting lower limb power, core stability and postural control under maximal cardiovascular demand is essential for both jockey performance and injury prevention. Enhanced jockey stability and neuromuscular coordination during racing phases will benefit not only rider safety but also horse biomechanics, comfort and competitive output.
Read the full abstract on PubMed
Practical Takeaways
- •Jockeys require race-specific off-horse conditioning programmes targeting hamstring strength and lower body stability, as race riding demands differ substantially from trial work
- •Race riding involves significantly greater cardiovascular stress (~94% HRmax) than trials (~81% HRmax), requiring periodised training to build aerobic capacity and reduce fatigue-related injury risk
- •Enhanced jockey stability and postural control during racing directly benefits horse welfare and performance through improved balance and reduced asymmetrical loading
Key Findings
- •Race riding demands ~94% HRmax with TRIMP scores of 7.2±1.8 compared to trials at ~81% HRmax with TRIMP of 4.4±1.8
- •Jockeys in races adopted lower crouched postures with anterior centre of mass shift and greater hamstring activation than in trials
- •Head displacement was similar between trials and races (5.4±2.1 cm vs 5.6±2.2 cm), but postural displacement patterns differed significantly
- •Race-specific training addressing posture, hamstring strength, and reduced upper arm muscle activation could improve jockey fitness and horse welfare