Table 5 Physiological and subjective responses during competitive singles tennis
VariableMean (SD)Range
Rectal temperature (°C)38.45 (0.36)37.43 to 39.98
Change in rectal temperature (°C)1.32 (0.40)0.47 to 2.40
Maximum rectal temperature (°C)38.72 (0.38)37.52 to 39.59
Skin temperature (°C)31.82 (2.27)25.74 to 36.50
Sweat rate (ml/kg/min)13.32 (5.56)2.74 to 26.00
Heart rate (beats/min)136.79 (13.62)99.01 to 167.66
Perceived exertion12.9 (1.9)8.5 to 17.0
Thermal comfort5.1 (0.8)3.0 to 7.0
Sweatiness1.9 (1.0)0.0 to 10.0
Conditions6.0 (2.2)0.5 to 10.0
  • Data from 94 observations.

  • Perceived exertion: 6, “very, very light” to 20, “very, very hard”.

  • Thermal comfort: 1, “much too cool” to 7, “much too warm”.

  • Sweatiness: 0, “dry” to 4, “dripping wet”.