Skip to main content

Table 1 Basic characteristics of the study population

From: Exploring the association of physical activity with the plasma and urine metabolome in adolescents and young adults

 

Plasma Metabolome

Urine Metabolome

Characteristic

N = 365

 

 N = 215

 

Sex, femalesa

365

213 (58.4)

215

109 (50.7)

Age at sample collection, yearsb

365

18.4 (18.1, 25.0)

215

18.1 (17.1,18.2)

BMI at sample collection (kg/m2)b

365

22.3 (20.5, 24.7)

215

21.9 (19.9, 24.2)

Physical activity (MET-h /w)b

365

26.0 (12.0, 47.0)

215

33.0 (13.0, 53.0)

Energy intake (Kcal/day)b

276

2034 (1637, 2457)

214

2135 (1759, 2518)

Protein intake (E%)b

276

13.9 (12.3, 15.7)

214

13.7 (12.2, 15.4)

Fat intake (E%)b

276

33.1 (29.4, 38.1)

214

33.0 (30.1, 38.0)

Carbohydrate intake (E%)b

276

50.0 (45.2, 55.1)

214

50.0 (45.0, 55.1)

Smoking statusa

301

 

154

 

 Never

 

194 (64.5)

 

109 (70.7)

 Former

 

51 (16.9)

 

21 (13.6)

 Current

 

56 (18.6)

 

24 (15.5)

Alcohol consumptiona

325

 

170

 

 Never

 

26 (8.0)

 

21 (12.3)

 Former

 

42 (12.9)

 

30 (17.6)

 Current

 

257 (79.1)

 

119 (70.0)

Smoking household: Yesa

260

83 (31.9)

157

49 (31.2)

Maternal occupation (working full or part-time): Yesa

283

187 (66.1)

174

138 (79.3)

Maternal education ≥ 12 years of education: Yesa

284

158 (55.6)

174

113 (52.6)

  1. Data presented as a n (%) where n = count, % = percentage, b Median (25%, 75% percentile), BMI, body mass index calculated as weight (kg)/height (m2), E% indicates percentage of total energy intake per day, Physical activity reflects the leisure time physical activities in MET-h /w, metabolic equivalent of task-hours per week. Differences in N due to missing data for that variable