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Table 2 Measured variables in STS and FIRS bathing 30 min or in STS and sitting in a normal room (NO SAUNA) 30 min and in both cases during recovery sitting another 30 min (mean ± SD)

From: Effects of far-infrared sauna bathing on recovery from strength and endurance training sessions in men

Variable Before STS After STS Recovery 30 min Recovery 60 min
Isometric bench press (kg)
 FIRS 96.6 ± 14.6 78.9 ± 12.4a 83.7 ± 13.2a
 NO SAUNA 97.2 ± 15.9 80.3 ± 12.7a 84.6 ± 13.1a
Isometric leg press (kg)
 FIRS 428 ± 79 374 ± 70a 383 ± 78a
 NO SAUNA 424 ± 70 362 ± 69a 372 ± 83a
Heart rate (beats/min)
 FIRS 68 ± 10 129 ± 16a 87 ± 10 77 ± 10
 NO SAUNA 67 ± 8 125 ± 8a 76 ± 8 67 ± 8
Blood pressure (mm Hg)
 FIRS systolic 130 ± 13 158 ± 15a 129 ± 13 128 ± 12
 FIRS diastolic 74 ± 9 75 ± 18 76 ± 6 78 ± 12
 NO SAUNA systolic 132 ± 15 163 ± 13a 129 ± 10 129 ± 12
 NO SAUNA diastolic 74 ± 9 75 ± 18 76 ± 6 78 ± 12
pH
 FIRS 7.41 ± 0.02 7.32 ± 0.06a 7.42 ± 0.02 7.41 ± 0.02
 NO SAUNA 7.41 ± 0.02 7.34 ± 0.02a 7.40 ± 0.03 7.41 ± 0.02
Lactate (mmol/l)
 FIRS 1.8 ± 0.9 13.2 ± 1.7a 4.4 ± 1.6 2.4 ± 0.9
 NO SAUNA 2.6 ± 1.7 12.1 ± 1.9a 3.8 ± 0.8 2.5 ± 0.7
Testosterone (nmol/l)
 FIRS 18.1 ± 5.2 22.7 ± 6.5b 20.3 ± 5.4 20.1 ± 5.9
 NO SAUNA 18.5 ± 7.5 22.3 ± 6.4b 20.5 ± 7.5 19.8 ± 7.4
Cortisol (nmol/l)
 FIRS 471 ± 162 449 ± 159 435 ± 213 368 ± 242b
 NO SAUNA 467 ± 197 441 ± 216 401 ± 219 320 ± 189b
Growth hormone (µg/l)
 FIRS 0.2 ± .0.2 43.3 ± 36.6a 16.6 ± 12.2b 6.5 ± 7.0
 NO SAUNA 1.3 ± 3.5 40.5 ± 41.9a 13.5 ± 17.3b 6.6 ± 8.8
Body mass (kg)
 FIRS 81.1 ± 6.3 80.8 ± 6.2 80.7 ± 6.2c 80.6 ± 6.2c
 NO SAUNA 80.9 ± 6.6 80.6 ± 6.6 80.5 ± 6.6 80.5 ± 6.6
CMJ (m)
 FIRS 0.37 ± 0.05 0.33 ± 0.05a 0.34 ± 0.05a
 NO SAUNA 0.37 ± 0.06 0.33 ± 0.07a 0.33 ± 0.08a  
  1. aSignificantly (p < 0.001) different from before value.
  2. bSignificantly (p < 0.05) different from before value.
  3. cSubjects drank 0.5 dl water in sauna which is included in body mass.