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Table 3 Cold-induced symptoms during each trial

From: Influence of exercise duration on respiratory function and systemic immunity among healthy, endurance-trained participants exercising in sub-zero conditions

 

30 min

90 min

Symptom

Before

After

 + 20 min

Before

After

 + 20 min

Nasal irritation

0.25 (0–1)

2 (0.25–2)**

0 (0–1)

0.25 (0–1)

2 (0.875–3)**

0.5 (0–1)

Nasal mucus

1 (0.375–2.25)

4 (3–5)***

1 (0.5–2)

1 (0.75–2)

5 (4–6.25)***

0.75 (0.375–2)

Cold face

0 (0–0)

3 (2–4.5)***

0 (0–0.625)*

0 (0–0)

3.5 (3–6)***

0.25 (0–1)*

Cold extremities

0 (0–0.6)

3 (0–4.5)**

0.5 (0–1)

0 (0–0.875)

3.5 (1.75–6.5)**†

1.25 (0–3)

Physical discomfort

0 (0–0.5)

2 (0–3)**

0 (0–0.5)

0 (0–0.5)

2.5 (0.5–4)**

0.5 (0–2)†

Shortness of breath

0 (0–0.5)

2 (1–2)**

0 (0–1)

0 (0.25–0.5)

2 (1–3)***

0.25 (0–0.5)

Warm in body

1.5 (0–3)

3 (0.75–4)

1 (0.5–3)

2 (0.5–3)

4 (2–5)**†

3 (1.25–3.5)†

Irritation in the chest

0 (0–0.5)

0 (0–2)

0.25 (0–1)

0 (0–1)

1.25 (0–2)**

0.5 (0–2)

Irritation in the mouth and throat

1 (0.375–2.25)

4 (3–5)

1 (0–2)

1 (0.75–2)

5 (4–6.25)**

1 (0–2.25)

  1. Data are presented as median (IQR). Significant difference within trial, compared to baseline (*, p < 0.05, **, p < 0.01; ***, p < 0.001); †Significant difference between trials (p < 0.05)