Table 2 Summary of Participant Characteristics and Session Conditions.

From: Cold exposure induces dynamic, heterogeneous alterations in human brown adipose tissue lipid content

Characteristic

Value

n

7

Age (years)

26.7 ± 3.4 (22 to 33)

Height (cm)

170.6 ± 6.5 (162 to 180.3)

Mass (kg)

70.8 ± 10.2 (55.8 to 86.4)

Body Mass Index (kg/m2)

23.6 ± 2.5 (19.3 to 27.7)

Body Surface Area (m2)

1.82 ± 0.15 (1.64 to 2.03)

Waist Circumference (cm)

83.1 ± 5.2 (75.8 to 90.4)

Perception Based Cooling (PCP) Session

Outdoor Temperature (°C)

8.5 ± 11.6 (−5 to 26)

Outdoor Humidity (%)

72.9 ± 15.9 (48 to 89)

Indoor Temperature (°C)

20.7 ± 1.9 (17 to 23)

Indoor Humidity (%)

41.7 ± 17.8 (21 to 70)

Shiver Threshold (°C)

15.6 ± 2.4 (13 to 20)

Cooling Dose (°C*min)

698.6 ± 213.5 (400.8 to 1078.3)

Normalized Cooling Dose (°C*min*m−2)

383.5 ± 117.0 (243.7 to 604.4)

Magnetic Resonance Imaging (MRI) Session

Outdoor Temperature (°C)

10.2 ± 9.7 (−4 to 22)

Outdoor Humidity (%)

85.0 ± 13.0 (66 to 100)

Indoor Temperature (°C)

21.1 ± 0.76 (20.4 to 22)

Indoor Humidity (%)

48.8 ± 4.7 (41.8 to 51.8)

Cooling Dose (°C*min)

665.9 ± 130.1 (406.1 to 758.3)

Normalized Cooling Dose (°C*min*m−2)

366.2 ± 71.5 (246.9 to 436.3)

  1. Values are means ± s.d. (Minimum to Maximum). Body surface area was calculated using the formula of DuBois and DuBois34. Environmental conditions were recorded at the start of the PCP and MRI cooling sessions. Indoor MRI conditions were not available for three sessions. Shiver threshold was the water temperature that elicited sustained shivering (>1 min in duration) in a participant during the PCP session27. Cooling dose was calculated as the area under the relative water temperature versus time curve recorded for each participant during the PCP and MRI sessions. Cooling dose was divided by body surface area to account for differences in participant body size.