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Table 3 Baseline data by self-reported physical activity level (n = 83): the “low physical activity”, “medium physical activity” and “high physical activity” level

From: Longitudinal associations between cardiorespiratory fitness and stress-related exhaustion, depression, anxiety and sleep disturbances

 Low fitnessMedium fitnessHigh fitness 
CharacteristicsNMedianIQRNMedianIQRNMedianIQRp-value
Age, yrs.1343549417.02148130.04a
Education13  48  21  0.68b
 high, % (n) 77% [10]  63% [30]  67% [14]  
 low, % (n) 23% [3]  37% [18]  33% [7]  
Body mass index (BMI)1321.95.14924.54.12123.72.70.07a
Current smokers/nicotine users, % (n)138% [1] 4815% [7] 2119% [4] 0.75b
AUDIT score132.04.0492.02.0213.01.00.41a
Symptom duration13  47  21  0.02b
  ≥ 1 year 85% [11]  40% [19]  57% [12]  
  < 1 year 15% [2]  60% [28]  43% [9]  
Use of antidepressants, % (n)1331% [4] 4933% [16] 2119% [4] 0.59b
KSQ insomnia index122.91.9483.01.3192.81.50.54a
KSQ sleepiness index113.81.6474.21.0174.81.20.04a
KSQ premature awakening index131.72.3482.71.7183.71.70.01a
KSQ single item, poor sleep quality, % (n)1369% [9] 4768% [32] 1867% [12] 0.99a
HADS depression sum score13136.0499.07.0219.05.00.10a
HADS anxiety sum score13148.049127.021115.00.50a
SMBQ sum score126.50.9455.61.1215.21.00.002a
SMBQ > 4.4, % (n)12100% [12] 4596% [43] 2190% [19] 0.62b
  1. aKruskal-Wallis test; bFisher’s exact test. AUDIT = Alcohol Use Disorders Identification Test; HADS = Hospital Anxiety and Depression Scale; KSQ = Karolinska Sleep Questionnaire; SD = standard deviation; SMBQ = Shirom-Melamed Burnout Questionnaire