OBJECTIVE: To examine core body temperature, energy expenditure, and respiratory quotient among breast cancer survivors experiencing hot flashes and compare these data to published studies from healthy women. DESIGN: In an observational study, nine breast cancer survivors with daily hot flashes who met specified criteria spent 24 hours in a temperature- and humidity-controlled whole-room indirect calorimeter (ie, metabolic room). Demographic and disease/treatment information were obtained and the following were measured: hot flashes via sternal skin conductance monitoring (sampled every second); core body temperature via an ingested radiotelemetry pill (sampled every 10 seconds); and energy expenditure and respiratory quotient via a whole-room indirect calorimeter (calculated every minute). RESULTS: Circadian analysis of core temperature indicated wide variability with disrupted circadian rhythm noted in all women. Core temperature began to rise 20 minutes pre-flash to 7 minutes pre-flash (0.09 degrees C increase). Increases in energy expenditure and respiratory quotient increased with each hot flash. CONCLUSIONS: Findings are comparable to published data from healthy women and warrant replication in larger, more diverse samples of women treated for breast cancer.
OBJECTIVE: To examine core body temperature, energy expenditure, and respiratory quotient among breast cancer survivors experiencing hot flashes and compare these data to published studies from healthy women. DESIGN: In an observational study, nine breast cancer survivors with daily hot flashes who met specified criteria spent 24 hours in a temperature- and humidity-controlled whole-room indirect calorimeter (ie, metabolic room). Demographic and disease/treatment information were obtained and the following were measured: hot flashes via sternal skin conductance monitoring (sampled every second); core body temperature via an ingested radiotelemetry pill (sampled every 10 seconds); and energy expenditure and respiratory quotient via a whole-room indirect calorimeter (calculated every minute). RESULTS: Circadian analysis of core temperature indicated wide variability with disrupted circadian rhythm noted in all women. Core temperature began to rise 20 minutes pre-flash to 7 minutes pre-flash (0.09 degrees C increase). Increases in energy expenditure and respiratory quotient increased with each hot flash. CONCLUSIONS: Findings are comparable to published data from healthy women and warrant replication in larger, more diverse samples of women treated for breast cancer.
Authors: K L Rand; J L Otte; D Flockhart; D Hayes; A M Storniolo; V Stearns; N L Henry; A Nguyen; S Lemler; J Hayden; S Jeter; J S Carpenter Journal: Climacteric Date: 2010-05-07 Impact factor: 3.005
Authors: Hadine Joffe; David P White; Sybil L Crawford; Kristin E McCurnin; Nicole Economou; Stephanie Connors; Janet E Hall Journal: Menopause Date: 2013-09 Impact factor: 2.953
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