Table 1

Demographic data and reported symptoms of the patients

Subject	1	2	3	4	5	6	7	8	9	10
Sex	Men	Women	Men	Men	Men	Men	Men	Men	Women	Men
Age	18	17	38	36	31	46	21	35	23	22
Height (cm)	188	163	176	189	185	178		185	187	179
Weight (kg)	78.7	39	64	78	67.9	72.5	68.9	74.8	77.3	62.8
Sport	Motor cross	Distance running	Distance running	400 m running	Distance running	Triathlon	Cycling	Race walking	Swimming	Distance running
Duration symptoms before testing	1 year	1 year	At least 3 months	At least 2 months	At least half a year	2–3 months	6 weeks	2 weeks	2 weeks	5 months
Duration recovery after testing	1 year	Several years	>5 years	>3 years	No full recovery	1–2 months	max 6 months	approx 12 weeks	1 month	3 months
Performance decrements	Unable to complete training sessions	Unable to perform normal training because of dizziness	Unable to perform normal training	Unable to perform normal training	Unable to perform normal training	HRmax<150, dizziness and dyspnoea during uphill cycling	Unable to complete races, bad recovery from training	Unable to complete normal training and races	Difficulty with speed training	Unable to complete normal training and worse race performance
Fatigue	Severe		Severe	Severe	Severe	Severe		Severe	Severe	Severe
Muscle soreness				Heavy legs		Heavy and painful legs	muscle soreness	hamstring pain		heavy upper legs
Other symptoms	Sleeps 11–12 h each night, psychological problems	Anorexia	Psychological problems, depression	Gets up frequently to urinate, impotence	Sleeping disturbances		psychological problems		sleeps 14 h per day	difficulties getting up, gained 5 kg in 5 months
Diagnosis	OTS	OTS	OTS	OTS	OTS	NFO	NFO	NFO	NFO	NFO