+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 2. Measurement error and effect of training stage on the relationship between objective and subjective criteria of training workload



Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 2. Measurement error and effect of training stage on the relationship between objective and subjective criteria of training workload



New Zealand Veterinary Journal 52(5): 272-279



To identify the magnitude and sources of error involved in simply quantifying the workload of a group of Thoroughbred racehorses in training. Data were obtained from seven 2-year-old fillies trained for 13 weeks on sand and grass tracks at various cantering velocities, and at the gallop in the last 4 weeks. Four fillies completed training and comprised a 'high exercise intensity' subgroup; three fillies did not complete all gallops due to lameness or injury and comprised a 'medium exercise intensity' subgroup. The trainer recorded the distance, time, track used, and subjective gait (SG; viz canter, 1/4-pace, 1/2-pace and gallop) of each horse each day. Data were analysed to describe the training programme and sources of variation in workload. A cumulative workload index (CWI) was devised to simply express distance and velocity aspects of the training programme. The magnitude of errors in measurement of timing and distance were small but significant (<0.8%, p=0.01). SG was an inaccurate descriptor of velocity. Mean velocity of 1/2-pace decreased from 8.92 (SE 0.049) in Weeks 6-8 to 6.33 (SE 0.061) m/sec after the start of galloping sessions in Week 9 (p=0.01). Track surface had a significant effect on the velocity of 1/2-pace (p=0.001). The fastest velocity was recorded on the grass (9.06, SE 0.292 m/sec), followed by 'plough' (8.23, SE 0.152 m/sec), and sand (7.90, SE 0.132 m/sec) tracks. The CWI of the horses ranged between 1,085,000 and 1,634,000 (mean=1,428,000; SE 78,000). The average exercise intensity per week was 110,000 (SE 1,048). There were no significant differences between high and medium exercise intensity subgroups for the canter and 1/4-pace. The high exercise subgroup had a greater CWI for the 1/2-pace (839,000 vs 559,000; p=0.004), gallop (71,000 vs 31,000; p=0.001), and total index (1,580,000 vs 1,242,000; p=0.001). The workload history of a horse can be accurately described using an index based on manual measurement of the time and distance worked. Accurate and precise data on the training programme of performance horses are likely to enable greater differentiation of aspects of workload which are associated with both performance and injury.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 004243863

Download citation: RISBibTeXText

PMID: 15768123

DOI: 10.1080/00480169.2004.36439


Related references

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. Conclusions. New Zealand Veterinary Journal 53(6): 377-383, 2005

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 5. Kinematic effects. New Zealand Veterinary Journal 53(2): 95-100, 2005

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 6. Bone parameters in the third metacarpal and third metatarsal bones. New Zealand Veterinary Journal 53(2): 101-112, 2005

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 7. Bone and articular cartilage response in the carpus. New Zealand Veterinary Journal 53(2): 113-122, 2005

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 1. Study design, and clinical, nutritional, radiological and histological observations. New Zealand Veterinary Journal 52(5): 261-271, 2005

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 4. Morphometric, microscopic and biomechanical properties of the digital tendons of the forelimb. New Zealand Veterinary Journal 52(5): 285-292, 2005

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 3. In vivo ultrasonographic assessment of the cross-sectional area and echogenicity of the superficial digital flexor tendon. New Zealand Veterinary Journal 52(5): 280-284, 2005

Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. 8. Quantitative back-scattered electron scanning electron microscopy and confocal fluorescence microscopy of the epiphysis of the third metacarpal bone. New Zealand Veterinary Journal 53(2): 123-132, 2005

Days lost from training by two- and three-year-old Thoroughbred horses a survey of seven UK training yards. Equine Veterinary Journal: 7, 650-657, 2008

Days lost from training by two- and three-year-old Thoroughbred horses: a survey of seven UK training yards. Equine Veterinary Journal 40(7): 650-657, 2009

Thoroughbred horses in race training have lower levels of subchondral bone remodelling in highly loaded regions of the distal metacarpus compared to horses resting from training. Veterinary Journal 202(3): 443-447, 2015

The effect of training intensity on cardiopulmonary function in 2 year-old Thoroughbred horses. Journal of Equine Science 8(3): 75-80, Sept, 1997

Epidemiology studies of musculoskeletal racing and training injuries in Thoroughbred horses, Minnesota, USA. Acta Veterinaria Scandinavica (Suppl. 84): 340-343, 1988

Epidemiological studies of musculoskeletal racing and training injuries in Thoroughbred horses, Minnesota, U.S.A. Acta Veterinaria Scandinavica. Supplementum 84: 340-343, 1988

A prospective study on fitness, workload and reasons for premature training ends and temporary training breaks in two groups of riding horses. Preventive Veterinary Medicine 108(2-3): 199-208, 2013