Key result
Noise stress impaired skilled performance, while pre-loading with glucose attenuated the impairment and reduced high blood glucose levels.
Why the study?
Does glucose pre-loading attenuate performance impairment caused by noise stress in male subjects?
RCT (n=32)
randomly assigned
Does glucose pre-loading attenuate performance impairment caused by noise stress in male subjects?
Glucose pre-loading attenuates performance impairment during noise stress, suggesting a relationship between blood glucose utilization and stress response.
Glucose pre-loading may preserve skilled performance in noisy settings; extends evidence on metabolic modulation of acute stress responses.
Thirty-two male subjects were randomly assigned to one of four groups. Groups A and B were pre-loaded with glucose, Groups C and D were not. Groups A and D carried out a pursuit rotor task under 50 dBA (non-stressful ), white noise. Groups B and C carried out the same task under 80 dBA (stressful) white noise. Blood samples were taken from each subject, and blood glucose levels as well as time on target were measured Statistical analysis of the results showed that noise stress impaired performance and that pre-loading with glucose attenuated the impairment. This change in performance was accompanied by a reduction in the high blood glucose level caused by pre-loading. Pre-loading in the non-stressful condition impaired performance without an associated fall in the high blood glucose level. A suggestion is made that blood glucose levels may be used as an indicant of stress.
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SIMPSON et al. (1974) reported an RCT. Glucose pre-loading and 80 dBA white noise stress vs. No glucose pre-loading and 50 dBA white noise was evaluated on Blood glucose levels and time on target (skilled performance). Noise stress impaired skilled performance, while pre-loading with glucose attenuated the impairment and reduced high blood glucose levels.
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