Table 2 Jugular vein hematocrit, plasma glucose and protein concentrations, and PO₂ at rest and during recovery from a Competition Exercise Test, after horses were either given 1) an oral sodium acetate/acetic acid solution followed by a typical feeding protocol (NAA trial), or 2) a typical feeding protocol alone (Control trial)

NAA

Control

NAA

Control

NAA

Control

NAA

Control

Pre-Ex

37.1 ± 0.6

37.3 ± 0.7

4.7 ± 0.1

4.7 ± 0.1

6.1 ± 0.1

6.2 ± 0.1

59.4 ± 7.9

69.6 ± 13.9

End Ex

49.4 ± 0.5*

50.2 ± 0.7*

5.6 ± 0.2*

5.2 ± 0.3*

7.2 ± 0.1*

7.2 ± 0.2*

128.8 ± 7.6*

150.2 ± 11.5*

0'

39.7 ± 0.6

39.2 ± 0.6*

5.2 ± 0.2*

5.2 ± 0.1*

6.8 ± 0.1*

6.7 ± 0.2*

75.4 ± 11.6

77.9 ± 9.2

20'

40.3 ± 0.8*

38.7 ± 0.6*

5.5 ± 0.2*

5.5 ± 0.1*

7.0 ± 0.2*

6.9 ± 0.2*

93.9 ± 21.*

38.3 ± 2.1*

40'

41.1 ± 1.1*

38.2 ± 0.7

5.9 ± 0.1*

6.6 ± 0.1*

7.2 ± 0.2*

6.9 ± 0.2*

71.5 ± 14.3

45.2 ± 6.7*

60'

41.9 ± 0.7*

38.2 ± 0.8

6.1 ± 0.2*

7.1 ± 0.2*

7.2 ± 0.2*

6.8 ± 0.2*

41.8 ± 3.4

47.6 ± 11.0*

80'

41.3 ± 0.6*

6.5 ± 0.3*

7.1 ± 0.1*

43.5 ± 3.2

100'

41.1 ± 0.7*

6.8 ± 0.3*

7.0 ± 0.2*

51.4 ± 11.9

120'

40.9 ± 0.8*

37.5 ± 1.3

6.8 ± 0.4*

6.9 ± 0.4*

7.0 ± 0.2*

6.5 ± 0.2*

38.6 ± 1.6

75.2 ± 19.9

140'

40.7 ± 0.8*

6.6 ± 0.4*

6.9 ± 0.2*

44.2 ± 3.6

180'

39.3 ± 0.5

37.8 ± 0.9

6.2 ± 0.3*

6.0 ± 0.3

6.7 ± 0.1*

6.4 ± 0.2

50.6 ± 10.5

56.1 ± 2.5

210'

39.0 ± 0.3

5.9 ± 0.2*

6.5 ± 0.1*

44.1 ± 5.6

240'

40.1 ± 0.8*

41.0 ± 1.2*

6.2 ± 0.3*

5.3 ± 0.1*

6.4 ± 0.1*

6.4 ± 0.1*

60.5 ± 8.6

48.8 ± 4.0*

300'

37.2 ± 0.8

36.2 ± 0.7

6.0 ± 0.3*

5.3 ± 0.1*

6.2 ± 0.2

6.2 ± 0.2

68.2 ± 14.8

50.4 ± 7.3

360'

36.8 ± 0.9

36.8 ± 0.4

5.8 ± 0.2*

5.3 ± 0.2*

5.9 ± 0.2

6.2 ± 0.2

75.0 ± 12.3

65.5 ± 10.2

420'

36.0 ± 1.0

37.5 ± 0.4

5.5 ± 0.2*

5.0 ± 0.2

5.9 ± 0.2

6.3 ± 0.2

39.6 ± 3.2

46.7 ± 7.1

480'

36.8 ± 1.0

38.2 ± 0.2

5.6 ± 0.2*

5.0 ± 0.1

5.8 ± 0.2

6.5 ± 0.1*

46.3 ± 3.8

49.6 ± 5.6

24 h

40.7 ± 1.1*

41.0 ± 0.4*

5.5 ± 0.2*

4.9 ± 0.1

5.9 ± 0.2

6.4 ± 0.1

80.2 ± 18.9

124.2 ± 34.1*