TABLE 1.

Baseline characteristics of the sample

	Control	Exercise		Control	Exercise
Age (years)	46.0 ± 9.5	44.6 ± 9.9	Number of symptoms	8.7 ± 4.4	7.9 ± 3.6
Female sex	16 (80)	13 (68)	Weeks of symptoms	36.7 ± 23.4	29.3 ± 16.8
Symptoms			Evolution of symptoms
Low‐grade fever	3 (15.0)	4 (21.1)	Fluctuating course	11 (55.0)	9 (47.4)
Fatigue	16 (80.0)	16 (84.2)	Progressive improvement	17 (85.0)	12 (66.7)
Dyspnea	12 (60.0)	11 (57.9)	Intensity of symptoms
Myalgia	10 (50.0)	8 (42.1)	Mild	7 (35.0)	10 (52.6)
Headache	9 (45.0)	8 (42.1)	Moderate	11 (55.0)	6 (31.6)
Loss appetite	6 (30.0)	2 (10.5)	Severe	2 (10.0)	3 (15.8)
Weight loss	1 (5.0)	2 (10.5)	Medication
Chest pain	8 (40.0)	2 (10.5)	Taking any medication	12 (60.0)	14 (73.7)
Cough	3 (15.0)	3 (15.8)	Antidepressants	7 (35.0)	7 (36.8)
Loss of smell/taste	9 (45.0)	5 (26.3)	Benzodiazepines	6 (30.0)	7 (36.8)
Low mood	11 (55.0)	7 (38.9)	Bronchodilators	7 (35.0)	3 (15.8)
Anxiety	6 (30.0)	6 (31.6)	Toxic habits
Lack concentration	10 (50.0)	12 (63.2)	Alcohol	0 (0.0)	2 (10.5)
Brain fog	10 (50.0)	11 (61.1)	Active smoker	1 (5.0)	2 (11.1)
Memory problems	10 (50.0)	11 (61.1)	Former smoker	6 (30.0)	6 (33.3)
Sleep disturbances	11 (55.5)	9 (47.4)	Comorbidity
Dizziness	3 (15.0)	4 (21.1)	Hypertension	0 (0.0)	1 (5.3)
Palpitations	5 (25.0)	4 (21.1)	Diabetes	0 (0.0)	1 (5.3)
Hair loss	5 (25.0)	5 (26.3)	Asthma	3 (15.0)	2 (10.5)
Diarrhea	5 (25.0)	0 (0.0)	Structural heart disease	2 (10.0)	1 (5.3)
Nausea/vomiting	1 (5.0)	0 (0.0)	Cerebrovascular disease	0 (0.0)	1 (5.3)
Abdominal pain	4 (20.0)	3 (15.8)	Psychiatric conditions	4 (20.0)	7 (36.8)

Note: Data are frequencies and percentages (n [%]) or means and standard deviation (M ± SD).