Table 4.

Basal Biochemical Levels

	Mean ± SD
Parameter	Athletes With Overtraining Syndrome	Healthy Athletes	Sedentary Controls	Normal Range
No. of participants	14	25	12
Creatinine, mg/dL	1.11 ± 0.14	1.14 ± 0.17b	1.01 ± 0.1	0.7–1.3
Hematocrit, %	44.5 ± 2.3	44.1 ± 2.5c	46.4 ± 2.4	38–50
Mean corpuscular volume, fL	86.5 ± −2.5	87.5 ± 4.8	88.3 ± 3.9	80–96
Neutrophils, /mm3	2986 ± 761a	3809 ± 1431	3186 ± 847	1500–6000
Lymphocytes, /mm3	2498 ± 487	2154 ± 640c	2820 ± 810	800–4000
Platelets, ×103/mm3	248 ± 53	235 ± 38	225 ± 63	150–450
Low-density lipoprotein cholesterol, mg/dL	113 ± 17	117 ± 69	104 ± 17	<130
High-density lipoprotein cholesterol, mg/dL	53.9 ± 6.4	60.7 ± 14.4	51.5 ± 8.7	>45
Triglycerides, mg/dL	91 ± 32	94 ± 46	152 ± 87	<150
Neutrophil : lymphocyte ratio	1.23 ± 0.34a	2 ± 1.28c	1.27 ± 0.73	e
Platelet : lymphocyte ratio	104.1 ± 34.2	119.1 ± 43.4d	82.4 ± 19.5	e
Vitamin B12, pg/mL	517 ± 233	553 ± 188	442 ± 155	180–900

^aDifference between the overtraining and healthy athlete groups (P < .05).

^bDifference between the healthy athlete and sedentary control groups (P < .01).

^cDifference between the healthy athlete and sedentary control groups (P < .05).

^dDifference between the healthy athlete and sedentary control groups (P < .005).

^eNormal range not established.