Table 4. The VAS score of symptoms (n = 32).

Symptoms	Scores	300 m	1000 m	1500 m	2000 m	2500 m	3000 m	3500 m
Headache	5	0	0	0	0	0	0	1 (3.1%)
	10	0	2 (6.3%)	3 (9.4%)	5 (15.6%)	3 (9.4%)	3 (9.4%)	4 (12.5%)
	20	0	0	0	0	0	0	0
	30–100	0	0	0	0	0	0	0
Dizziness	5	0	0	0	0	0	0	1 (3.1%)
	10	0	4 (12.5%)	3 (9.4%)	5 (15.6%)	9 (28.1%)	11 (34.4%)	11 (34.4%)
	20	0	1 (3.1%)	1 (3.1%)	0	0	1 (3.1%)	4 (12.5%)
	30–100	0	0	0	0	0	0	0
Fatigue	5	0	0	0	1 (3.1%)	1 (3.1%)	0	0
	10	0	3 (9.4%)	3 (9.4%)	3 (9.4%)	5 (15.6%)	7 (21.9%)	10 (31.2%)
	20	0	1 (3.1%)	0	0	1 (3.1%)	2 (6.3%)	2 (6.3%)
	30–100	0	0	0	0	0	0	0
Gastrointestinal discomfort	5	0	0	0	0	0	0	0
	10	0	3 (9.4%)	3 (9.4%)	4 (12.5%)	5 (15.6%)	5 (15.6%)	6 (18.8%)
	20	0	0	0	0	0	0	0
	30–100	0	0	0	0	0	0	0