Cardiovascular Stress, Energy Expenditure and Subjective Perceived Ratings of Fire Fighters During Typical Fire Suppression and Rescue Tasks

The study determined physiological and psychophysical responses to fire fighters ‘ typical activities. Self-reported assessment of the most demanding fire fighting/rescue tasks were collected with a questionnaire. Then 19 voluntary fire fighters performed 3 simulated fire fighting/rescue tasks in protective clothing. Heart rate (HR), blood pressure and energy expenditure were measured; the rating of perceived exertion (RPE) was assessed with the Borg scale. The questionnaires showed that carrying out victims, fire suppression and resuscitation were classified as heavy load; climbing stairs with a hose as moderate load. According to RPE the subjects considered their effort during ladder climbing fairly light and only somewhat harder during stair climbing and carrying out injured people. The study demonstrated that typical fire fighting/rescue tasks were associated with high energy expenditure and imposed considerable cardiovascular stress. The Borg scale appeared not suitable for assessing perceived exertion in fire fighters during simulated tasks.

[1]  P Bishop,et al.  Empirical prediction of physiological response to prolonged work in encapsulating protective clothing. , 1994, Ergonomics.

[2]  Barnard Rj,et al.  Heart rate and ECG responses of fire fighters. , 1975 .

[3]  B. Bone,et al.  Selected physiological and psychobiological responses to physical activity in different configurations of firefighting gear , 1995 .

[4]  Ingvar Holmér,et al.  Thermoregulatory responses of firemen to exercise in the heat , 2006, European Journal of Applied Physiology and Occupational Physiology.

[5]  S N MacKinnon,et al.  Relating heart rate and rate of perceived exertion in two simulated occupational tasks. , 1999, Ergonomics.

[6]  Lemon Pw,et al.  The human energy cost of fire fighting , 1977 .

[7]  T. Itani,et al.  Effects of shift schedules on fatigue and physiological functions among firefighters during night duty , 2005, Ergonomics.

[8]  V Louhevaara,et al.  Cardiorespiratory and thermal effects of wearing gas protective clothing , 1984, International archives of occupational and environmental health.

[9]  Ingvar Holmér,et al.  Classification of metabolic and respiratory demands in fire fighting activity with extreme workloads. , 2007, Applied ergonomics.

[10]  Cady Ld,et al.  Energy costs of simulated stair climbing as a job-related task in fire fighting. , 1986 .

[11]  J E Manning,et al.  Heart rates in fire fighters using light and heavy breathing equipment: similar near-maximal exertion in response to multiple work load conditions. , 1983, Journal of occupational medicine. : official publication of the Industrial Medical Association.

[12]  P. Raven,et al.  Oxygen consumption during fire suppression: error of heart rate estimation. , 1991, Ergonomics.

[13]  John Frim,et al.  Physiological responses to fire fighting activities , 2004, European Journal of Applied Physiology and Occupational Physiology.

[14]  V Louhevaara,et al.  Are the job demands on physical work capacity equal for young and aging firefighters? , 1994, Journal of occupational medicine. : official publication of the Industrial Medical Association.

[15]  P. Lemon,et al.  The human energy cost of fire fighting. , 1977, Journal of occupational medicine. : official publication of the Industrial Medical Association.

[16]  J. Medbø,et al.  Physiological responses of firefighters and performance predictors during a simulated rescue of hospital patients , 2006, Ergonomics.

[17]  H. W. Duncan,et al.  Heart rate and ECG responses of fire fighters. , 1975, Journal of occupational medicine. : official publication of the Industrial Medical Association.

[18]  H N Williford,et al.  Relationship between fire fighting suppression tasks and physical fitness. , 1999, Ergonomics.

[19]  G. Borg.  Psychophysical bases of perceived exertion. , 1982, Medicine and science in sports and exercise.

[20]  M S Sothmann,et al.  Heart rate response of firefighters to actual emergencies. Implications for cardiorespiratory fitness. , 1992, Journal of occupational medicine. : official publication of the Industrial Medical Association.

[21]  B. Noble,et al.  Clinical applications of perceived exertion. , 1982, Medicine and science in sports and exercise.

[22]  J Faff,et al.  Physiological responses to working with fire fighting equipment in the heat in relation to subjective fatigue. , 1989, Ergonomics.

[23]  P. Åstrand,et al.  Textbook of Work Physiology , 1970 .

[24]  R J Robertson,et al.  The validity of regulating exercise intensity by ratings of perceived exertion. , 1992, Medicine and science in sports and exercise.

[25]  Anna Marszałek,et al.  Physical work capacity (VO2 max) and work ability (WAI) of active employees (men and women) in Poland , 2005 .

[26]  B. Dietrich.  Textbook of Work Physiology: Physiological Bases of Exercise , 2004 .

[27]  V Louhevaara,et al.  Physiological strain in work with gas protective clothing at low ambient temperature. , 1985, American Industrial Hygiene Association journal.