This study examined the effects of intensity and duration exercise on nature magnitude training adaptations in muscle adolescent (2-3 yr old) racehorses. Six thoroughbreds that had been pretrained for 2 mo performed six consecutive conditioning programs varying lactate-guided intensities [velocities eliciting blood lactate concentrations 2.5 mmol/l (v2.5) 4 (v4), respectively] durations (5, 15, 25 min). Pre- posttraining gluteus biopsies were analyzed myosin heavy chain content, fiber-type...

The objective of the study was to examine validity v(4) [velocity run under defined conditions inducing 4 mmol/L blood lactate concentration ([LA])] and v(200) (velocity a heart rate 200 beats/min) differentiate performance level among Standardbred racehorses. For this purpose, 19 trotting racehorses with differing racing time records in 2 training yards were submitted standardized exercise test determine their (6 horses one yard only). consisted or more consecutive intervals depending on...

Abstract At the International Conference on Equine Exercise Physiology (ICEEP7), about 70 people attended workshop workload and conditioning guided by authors. Most of audience were involved in Thoroughbred or Standardbred racing, only a limited number mainly FEI equestrian disciplines (sport horses). The this review article address measurement racehorse. It was proposed that could be quantified using few selected parameters commonly recorded racing industries, such as velocity distance, to...

The speed producing the maximal lactate steady state (maxLASS) is supposed to be optimal condition for endurance. maxLASS was defined as at which blood concentration ([LA]) between 5th and 25th min of continuous exercise did not increase by more than 1 mmol/L. According aerobic-anaerobic threshold concept determined in humans, corresponds v(4) [speed a standardized test (SET) shown produce an [LA] 4 mmol/L; generalized v(i) i mmol/L]. Four Thoroughbreds were submitted treadmill-based SET...

Summary The effects of 3 different conditioning programmes on muscle glycogen concentration in horses were examined. Speed exercise was selected according to the blood lactate values for each horse derived from a standardised test before beginning programme. Six 2‐year‐old Haflinger stallions assigned randomly one 6 × latin square design: 45 min at their individual v 1.5 or 2.5 and 25 4 . Each programme lasted weeks (21 sessions), followed by 5 without (resting period). All carried out...

Summary Reasons for performing study : The influence of relevant exercise parameters such as intensity and duration on the muscular response to training has not been reported in Thoroughbreds. This knowledge may be great value practice. Objective To define relative contribution myosin heavy chain (MHC) Thoroughbred racehorses. Methods Six 2–3‐year‐old Thoroughbreds, following a randomised 6 times latin square design, performed consecutive conditioning programmes varying lactate‐guided...

Studies examining the effect of conditioning programs to improve fitness horses used in show jumping (Show Jumpers) are not available. Therefore, effects with 3 different interval type exercises were examined on 20 Show Jumpers divided into groups matched by age and performance level. Horses participated 2 periods (CP) each 6 weeks separated without exercise. Training during a CP was same for all but one specific exercise bout every 5 th day. The bouts termed Gallop (n=13), Sprint (n=14)...

Summary The effects of three different blood‐guided conditioning programmes on ultrastructural and histochemical features the gluteus medius muscle 2‐year‐old sport horses were examined. Six non‐trained Haflinger performed consecutive varying lactate‐guided intensities [velocities eliciting blood lactate concentrations 1.5 (v ), 2.5 ) 4 m respectively] durations (25 45 min). Each programme lasted 6 weeks was followed by a 5‐week resting period. Pre‐, post‐ deconditioning biopsies analysed....

In endurance racing the heart rate (HR) of horses in veterinary gates has to reach a maximum set continue racing. There is no literature on relationship between resting HR (HRresting) and after exercise (HRrecovery). This was examined seven results were related their v4 (speed at which blood lactate concentration 4 mmol/L). Horses submitted an test determine v4. Thereafter, exercised treadmill randomized order for 10 60 min different speeds. measured before several times until 30 recovery....

This study examined the effect of exercising horses five times per fortnight with two bouts 5 min duration at their v10 2 days between consecutive exercise sessions. Five Anglo-Arabian were treadmill-conditioned for 6 weeks. A standardized test (SET) was performed beginning conditioning period (CP) to determine blood lactate-running speed (BLRS) and heart rate-running (HRRS) relationship SET repeated every After each SET, BLRS relation used calculate horse's (v = velocity), which produced a...

Background Blood is collected for hematologic and biochemical analyses when racehorses perform poorly. However, racing affects most analyte levels; therefore, the timing of blood sampling can affect levels interpretations. Objective This study aimed to determine if variable returned pre‐racing 2 3 days post‐racing. Methods was sampled from 17 healthy pre‐ The variables measured plasma were albumin, cholesterol, creatinine, calcium (Ca), phosphorus (P), magnesium (Mg), sodium (Na), potassium...

The objective of the study was to examine whether age, racing time record or v 4 standardbred horses had an effect on changes cortisol concentration in plasma during exercise.For this purpose two race barns were submitted a standardized exercise test (SET).Speed and duration each run SET such that blood lactate horse exceeded mmol/ l after fourth later only.The measured plotted against running speed derive from lactate-running relation.The linear relation between all low but significant (in...

The behaviour of cortisol concentration in plasma clinically normal horses performing two different exercise tests on a treadmill was investigated to study the possible value measuring for performance diagnosis.In addition, were exercised with conditioning programmes and their effect basal measured.Finally, repeatability values measured before after examined.Horses always treadmill.The multiple step test consisted five gallop workouts lasting minutes´ each.The velocity first 6.0 m/s.Each...

The effect of storage duration at different temperatures on the plasma ammonia concentration equine EDTA whole blood, and heparin samples was investigated. Further, jugular vein compression before during blood sampling values evaluated. In kept 4 degrees C there no significant increase content after 6 hours storage, whereas already 3 collection if 20-22 C. stored C, -20 showed mean formation rates 26.8 mumol/l, 6.6 mumol/l 0.03 per day, respectively. There were differences between...

Abstract Objective To examine the reproducibility of blood lactate-running speed curve parameters derived by a curve-fit equation and linear interpolation from results 4-speed tests sport horses under field conditions. Design Thoroughbreds completed 10 test pairs with 3 to 11 days between retest. Animals 7 Thoroughbreds. Procedure The consisted 4 runs over distance 2,110 m. Exercise intensity was increased 1 m/s for each run. Blood lactate concentration measured after run plotted against...

The objective of the study was to examine whether age, racing time record, v4 or v2oo standardbred horses had an efiect on changes CK, LDH and AST activities in plasma during exercise (vo vr* = velocities run under defined conditions inducing 4 mmol/l blood lactate concentration 200 beats/min).For this purpose 15 were submitted a standardized test (SFf).The SET consisted four more runs depending when horse exceeded mmol/|.Speed first 6 m/s, it increased by 1 m/s for each run.The measured...