RESPIRATORY AND METABOLIC RESPONSES IN THE HORSE DURING MODERATE AND HEAVY EXERCISE

被引:35
|
作者
HODGSON, DR [1 ]
ROSE, RJ [1 ]
KELSO, TB [1 ]
MCCUTCHEON, LJ [1 ]
BAYLY, WM [1 ]
GOLLNICK, PD [1 ]
机构
[1] UNIV SYDNEY,DEPT VET CLIN SCI,SYDNEY,NSW 2006,AUSTRALIA
来源
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY | 1990年 / 417卷 / 01期
关键词
Blood gases during exercise; Fatigue; Muscle pH; Muscle temperature;
D O I
10.1007/BF00370771
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
Thoroughbred horses were exercised to fatigue on a treadmill at 62% and 100% of their VO2max. Hypoxemia occurred at the onset of exercise under both exercise conditions. This hypoxemia persisted to fatigue during the heavy exercise but progressively diminished as the exercise continued and had disappeared by the end of exercise at the lighter load. As a result of the hypoxemia the oxygen content of arterial blood during exercise at VO2max was 17% below its carrying capacity. However, under both experimental conditions the CaO2 still exceeded that of rest owing to an elevation in hemoglobin concentration. The temperature of blood at the point of fatigue was similar, 41.0±0.2 ° C and 41.1±0.2 ° C, for exercise at 62% and 100% VO2max, respectively. Muscle samples collected at rest and at the termination of exercise did not demonstrate major differences between the exercise conditions except for a higher [lactate] and lower pH following the heavy exercise. From these results it can be suggested that the combined effects of an elevated body temperature, changes in muscle pH, and oxygen delivery may all be factors contributing to limit exercise capacity in the horse. © 1990 Springer-Verlag.
引用
收藏
页码:73 / 78
页数:6
相关论文
共 50 条
  • [1] Respiratory responses to exercise in the horse
    Franklin, S. H.
    Van Erck-Westergren, E.
    Bayly, W. M.
    EQUINE VETERINARY JOURNAL, 2012, 44 (06) : 726 - 732
  • [2] RESPIRATORY RESPONSES TO EXPIRATORY RESISTANCE DURING EXERCISE AT MODERATE ALTITUDE
    MCCLARAN, S
    CORDAIN, L
    SOCKLER, J
    TUCKER, A
    FASEB JOURNAL, 1992, 6 (04): : A1538 - A1538
  • [3] Cellular responses to moderate and heavy exercise
    Nehlsen-Cannarella, SL
    CANADIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY, 1998, 76 (05) : 485 - 489
  • [4] CARDIORESPIRATORY AND METABOLIC RESPONSES TO TREADMILL EXERCISE IN THE HORSE
    THOMAS, DP
    FREGIN, GF
    JOURNAL OF APPLIED PHYSIOLOGY, 1981, 50 (04) : 864 - 868
  • [5] (V)over-dot-O-2 kinetics in the horse during moderate and heavy exercise
    Langsetmo, I
    Weigle, GE
    Fedde, MR
    Erickson, HH
    Barstow, TJ
    Poole, DC
    JOURNAL OF APPLIED PHYSIOLOGY, 1997, 83 (04) : 1235 - 1241
  • [6] Muscle metabolic responses during 16 hours of intermittent heavy exercise
    Green, H. J.
    Duhamel, T. A.
    Holloway, G. P.
    Moule, J.
    Ouyang, J.
    Ranney, D.
    Tupling, A. R.
    CANADIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY, 2007, 85 (06) : 634 - 645
  • [7] Respiratory and metabolic responses during exercise and skeletal muscle morphology in obesity
    Salvadori A.
    Fanari P.
    Dworzak† F.
    Azan G.
    Brunani A.
    Tovaglieri I.
    Luzi L.
    Longhini E.
    Sport Sciences for Health, 2004, 1 (1) : 47 - 54
  • [8] Metabolic and Endocrine Responses during Rest and Exercise under Moderate Hypoxic Condition
    Morishima, Takuma
    Mori, Ayaka
    Sasaki, Hiroto
    Goto, Kazushige
    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 2014, 46 (05): : 405 - 405
  • [9] METABOLIC AND CARDIOVASCULAR-RESPONSES TO TREADMILL EXERCISE IN THE HORSE
    THOMAS, DP
    FREGIN, GF
    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 1980, 12 (02): : 89 - 89
  • [10] A Cloth Facemask Causes No Major Respiratory or Cardiovascular Perturbations During Moderate to Heavy Exercise
    Guardieiro, Natalia Mendes
    Barreto, Gabriel
    Marticorena, Felipe Miguel
    Oliveira, Tamires Nunes
    de Oliveira, Luana Farias
    Pinto, Ana Lucia de Sa
    do Prado, Danilo Marcelo Leite
    Saunders, Bryan
    Gualano, Bruno
    JOURNAL OF PHYSICAL ACTIVITY & HEALTH, 2023, 20 (01): : 35 - 44