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Table 1 Plasma chemistry, electrolytes and high sensitivity cardiac troponin in heavy horse pulling competition: Samples on arrival (day 1), on the morning of competition (day 2, 3 or 4, depending on weight category), and 3 h after competition (number of horses indicated for each time point). The first column is based on all horses, with the other columns divided based on weight category. Median (Interquartile Range) shown

From: High intensity, short duration pulling in heavy horses: physiological effects of competition and rapid weight change

  All Lightweight Middleweight Heavyweight
Arrival Pre Post Arrival Pre Post Arrival Pre Post Arrival Pre Post
N = 34 26 20 8 7 3 12 8 8 14 11 9
Total protein
(g/L)
76.5
(71.3–81.3)
70.0 a
(68.3–72.8) (p < 0.001)
70.5 a
(66.0–74.0) (p < 0.001)
76.0
(72.0–80.3)
71.0
(69.5–72.5)
71.0
(69.5–73.5)
78.5
(70.8–90.0)
71.0
(70.0–72.8)
71.0
(68.0–74.3)
75.0
(69.0–79.0)
68.0
(62.0–72.0)
67.0
(66.0–73.0)
Albumin
(g/L)
32.5
(31.0–36.0)
29.5 a
(28.0–31.0)
(p < 0.001)
30.0 a
(28.0–32.0) (p < 0.001)
31.5
(30.0–32.5)
29.0 a
(29.0–30.0) (p = 0.02)
30.0
(29.0–31.0)
37.5
(32.5–39.0)
31.5 a
(27.8–33.5) (p = 0.003)
30.0
(29.0–34.3)
32.0
(32.0–34.0)
28.0 a
(26.5–30.0)
(p = 0.003)
30.0
(26.0–32.0)
Globulin
(g/L)
43.0
(39.3–46.8)
41.0
(39.0–43.0)
40.5
(37.0–42.0)
46.0
(42.5–47.8)
42.0
(40.0–43.0)
41.0
(40.5–42.5)
41.5
(39.8–51.0)
41.5
(38.8–43.5)
40.5
(39.0–41.3)
42.5
(39.0–45.0)
40.0
(37.0–43.0)
38.0
(37.0–42.0)
Creatinine
(mmol/L)
121.0
(102.8–144.0)
105.5 a
(92.5–111.75) (p = 0.001)
111.0 a
(89.8–120.3) (p = 0.001)
121.0
(113.0–155.0)
111.0 a
(105.0–112.0) (p = 0.015)
115.0
(113.0–118.0)
124.5
(118.0–179.3)
106.0 a
(96.0–110.0)
(p = 0.005)
107.0
(88.5–120.0)
109.5
(98.5–129.8)
94.0
(90.5–117.0)
100.0
(90.0–121.0)
Urea
(mmol/L)
5.9
(5.2–6.9)
4.6 a
(4.2–5.7)
(p < 0.001)
4.8 a
(4.2–5.7) (p < 0.001)
6.6
(6.4–6.9)
5.8 a
(5.6–6.5) (p = 0.047)
5.5
(5.2–6.5)
6.7
(5.9–10.5)
4.2 a
(3.7–5.0) (p = 0.004)
4.0
(3.4–5.2)
5.1
(4.9–5.7)
4.6
(4.5–4.9)
5.4
(4.4–5.6)
Osmolarity
(mmol/Kg)
267.0
(258.3–278.5)
256.0 a
(245.3–262.8) (p < 0.001)
250.5 a
(241.5–259.5) (p < 0.001)
267.5
(257.8–274.8)
261.0
(259.5–263.5)
258.0
(254.5–263.5)
281.0
(256.5–295.0)
257.5
(239.5–263.3)
242.0 a
(241.0–247.5) (p = 0.006)
267.0
(264.3–267.8)
247.0 a
(238.0–256.0) (p = 0.013)
250.0
(243.0–265.0)
Sodium
(mmol/L)
135.0
(128.5–138.8)
129.5 a
(123.3–131.0)
(p < 0.001)
125.5 a
(122.0–131.5) (p < 0.001)
134.0
(129.3–137.0)
130.0
(130.0–132.0)
131.0
(129.0–133.0)
140.0
(127.5–144.0)
129.0
(120.5–131.8)
123.0 a
(121.8–126.0) (p = 0.02)
134.0
(133.0–135.0)
125.0 a
(119.5–129.5) (p = 0.02)
125.0
(122.0–133.0)
Chloride
(mmol/L)
99.0
(96.0–103.0)
95.0 a
(86.0–98.0) (p = 0.004)
92.0 a
(82.8–96.0) (p = 0.004)
98.0
(90.0–102.0)
96.0
(93.0–97.0)
91.0
(86.0–95.0)
102.0
(95.5–105.3)
92.5
(83.0–99.5)
91.0 a
(82.3–94.3) (p = 0.01)
98.0
(97.0–101.0)
94.0
(89.0–98.0)
93.0
(88.0–101.0)
Potassium
(mmol/L)
3.4
(3.2–3.7)
3.3
(2.8–3.7)
2.9 a
(2.4–3.4) (p = 0.034)
3.45
(3.2–3.7)
3.6
(3.1–3.7)
2.3
(2.1–2.6)
3.3
(3.2–3.5)
3.3
(2.9–4)
2.8 a
(2.2–2.8) (p = 0.01)
3.3
(3.1–3.6)
3.2
(2.5–3.5)
3.3
(3.1–3.5)
CK (IU/L) 175.5 (150.3–253.0) 174.0 (127.8–325.3) 225.5 (142.0–887.5) a (p = 0.04) 214.0 (189.0–313.8) 215.0 (169.5–622.5) 294.0 (230.0–704.0) 175.0 (160.8–259.0) 143.5 (113.3–504.0) 209.0 (147.5–753.5) 167.0 (147.3–213.8) 178.0 (115.5–293.5) 231.0 (142.0–4544.0)
ALT
(IU/L)
7.0
(6.0–15.0)
6.5
(5.3–14.0)
9.5
(6.8–23.5)
6.0
(5.8–6.5)
7.0
(6.0–9.5)
7.5
(7.3–7.8)
11.5
(6.5–21.5)
14.0
(9.0–22.0)
14.5
(10.0–23.5)
7.0
(6.0–9.0)
5.0
(3.5–6.5)
6.0
(5.0–13.0)
cTnT
(ng/L)
2.9
(2.9–6.0)
2.9
(2.9–5.5)
4.0
(2.9–10.0)
2.9
(2.9–5.1)
2.9
(2.9–11.5)
15
(8.9–16.5)
4.0
(2.9–7.0)
2.9
(2.9–5.7)
3.5
(2.9–9.5)
2.9
(2.9–3.8)
2.9
(2.9–5.0)
4.0
(2.9–8.0)
Glucose
(mmol/L)
5.9
(5.4–6.6)
5.4 a
(5.0–5.6) (p = 0.026)
5.5
(5.1–5.8)
5.8
(5.1–6.1)
5.4
(5.2–5.7)
5.3
(5.2–5.4)
6.4
(5.9–7.2)
5.4 a
(5.2–5.8)
(p = 0.047)
5.8
(5.4–6.4)
5.8
(5.3–6.1)
5.0 a
(4.8–5.5) (p = 0.044)
5.5
(5.0–5.7)
T. bilirubin
(μmol/L)
26.4
(19.9–31.3)
17.7 a
(14.9–21.8) (p = 0.01)
17.8
(16.3–24.8)
25.0
(16.4–30.0)
15.0 a
(12.9–18.8) (p = 0.01)
19.3
(18.3–23.6)
48.3
(28.7–62.3)
18.7 a
(17.2–37.4) (p = 0.02)
18.4
(16.3–32.1)
21.8
(19.3–25.9)
17.5
(15.3–21.2)
17.3
(13.1–21.1)
  1. a significantly different from arrival. CK Creatinine Kinase, hscTnT High sensitivity cardiac troponin T