Cardiovascular, behavioral, and subjective effects of caffeine under field conditions

Höfer, Ilse; Bättig, K.

doi:10.1016/0091-3057(94)90198-8

Cited by 43 publications

(40 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By way of comparison, Passmore et al (1987) found that, after 24 h withdrawal, administration of 90 mg caffeine resulted in a significant increase in SBP and DBP of ~4 mm and 8 mmHg, respectively. Nevertheless, these acute effects in withdrawn subjects are thought to be transient as no consistent relationship between habitual caffeine ingestion (either tea or coffee) and blood pressure has been found in prospective clinical trials (Burr et al 1989;Bak and Grobbee 1990;van Dusseldorp et al 1992;Hofer and Battig 1994;Bingham et al 1996).…”

Section: Effects Of Caffeinementioning

confidence: 95%

“…In relation to blood pressure (BP), acute caffeine ingestion is associated with moderate but transient increases in subjects who have abstained from caffeine for 11-18 h (Smits et al 1985;Greenberg and Shapiro 1987;Lane and Williams 1987;Sung et al 1994), though chronic consumption is not reliably associated with such increases (van Dusseldorp et al 1992;Burr et al 1989;Bak and Grobbee 1990;Hofer and Battig, 1994;Bingham et al 1997). Changes in skin conductance have also been used as a sensitive measure of autonomic nervous system activation, indexing activity of the sympathetic nerves innervating the skin (Iwase et al 1988) and can correlate with changes in cerebral cortical activity (Lim et al 1996).…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Effects of hot tea, coffee and water ingestion on physiological responses and mood: the role of caffeine, water and beverage type

1997

View full text Add to dashboard Cite

Psychopharmacological studies using caffeinated beverages or caffeine have rarely considered temporal effects on psychological and physiological function or the specific contribution of caffeine, hot water, or beverage type to the observed effects. The effect of 400 ml hot tea, coffee, and water consumption on systolic and diastolic blood pressure (SBP and DBP), heart rate, skin conductance (a measure of sympathetic nervous system activation), skin temperature, salivary cortisol, and mood were monitored in 16 healthy caffeine-withdrawn (14 h) subjects in a complete crossover design. Beverages were ingested with/without 100 mg caffeine and milk (tea/coffee only). Hot beverage ingestion rapidly increased skin conductance and temperature (+1.7 degrees C) with peak effects observed only 10-30 min post-consumption. Caffeine in the beverage rapidly augmented skin conductance responses but, in contrast to the effect of hot water, reduced the skin temperature response and increased SBP (+2.8 mmHg) and DBP (+2.1 mmHg) 30-60 min post-consumption. Both caffeine and milk addition to beverages independently improved mood and reduced anxiety 30 and 60 min post-consumption. Milk addition had no other effects apart from attenuating the transient increase in physiological responses associated with the drinking phase. There were no effects of beverage consumption on salivary cortisol or of beverage vehicle on salivary caffeine levels, the latter indicating that caffeine pharmacokinetics was similar in both tea and coffee, and not different from caffeinated water. In keeping with this, the responses to tea and coffee ingestion were similar and largely accounted for by the effects of hot water and caffeine. However, tea potentiated the increase in skin temperature compared to coffee and water indicative of a greater vasodilatory response plausibly related to the presence of flavonoids in tea. We conclude that ingestion of hot caffeinated beverages stimulates physiological processes faster than hitherto described, primarily via the effects of hot water and caffeine, but with beverage type and milk playing important modulatory roles.

show abstract

Section: Effects Of Caffeinementioning

confidence: 95%

Section: Introductionmentioning

confidence: 98%

Effects of hot tea, coffee and water ingestion on physiological responses and mood: the role of caffeine, water and beverage type

1997

View full text Add to dashboard Cite

show abstract

“…Table 2). Decreased motor activity has been demonstrated in studies comparing acute caffeine abstinence with a preceding baseline condition (Höfer and Bättig 1994a,b), and the effect was time limited (Höfer and Bättig 1994a).…”

Section: Impaired Behavioral and Cognitive Performancementioning

confidence: 98%

A critical review of caffeine withdrawal: empirical validation of symptoms and signs, incidence, severity, and associated features

2004

View full text Add to dashboard Cite

show abstract

“…be related to the baroreflex effect that the HR suffers as a result of BP adjustments, as when there is a change in this variable, the HR may be adjusted as a result of the sympathetic or parasympathetic modulation of the heart. 26 Although the ingestion of caffeine may alter the baroreflex responses through antagonism of adenosine, modifying the responses in the autonomous nervous system, with an increase in sympathetic responses to the heat and culminating in an increased HR 26 , some experiments 9,27,28 have found a reduction in HR after consumption of 300 to 445 mg of caffeine, during 1 to 12 weeks. This reduction in HR may be associated to cardiovascular adjustments in an attempt to compensate for the increased BP.…”

Section: Resultsmentioning

confidence: 99%

Caffeine and physical training: effects on cardiac morphology and cardiovascular response

Ruíz¹,

Ramos

Martins‐Pinge

et al. 2014

Rev. Assoc. Med. Bras.

View full text Add to dashboard Cite

Conflict of interest: noneObjective: to analyze the morphological structure of cardiac, blood pressure (BP), heart rate (HR) and heart rate variability (HRV) of rats subjected to physical training with supplementation of caffeine. Methods: 60 rats were divided into 4 groups: control (CO), control with caffeine (CAF), trained control (TRE) and trained with caffeine (TCAF). All trained groups underwent 4 weeks of swimming, and all caffeine groups were supplemented by voluntary ingestion of caffeine diluted in drinking water. Results: there were no changes to BP and HR between groups. Regarding HRV, there was a decrease in LFnorm (low frequency) and LF/HF ratio (low and high frequency) in TCAF and CAF compared to group (p<0.02 and p<0.03, respectively). An increase occurred in CAF compared to the CO in the component LFnorm (p<0.05). The results also showed an increase in the relative weight of heart in the TRE (p<0.04) and TCAF (p<0.03) compared to CO. Conclusion: caffeine did not modify the hemodynamic responses. However, physical training resulted in a decrease in sympathetic response and an increase in relative heart weight.Uniterms: caffeine; exercise; arterial blood pressure; heart rate.

show abstract

Cardiovascular, behavioral, and subjective effects of caffeine under field conditions

Cited by 43 publications

References 27 publications

Effects of hot tea, coffee and water ingestion on physiological responses and mood: the role of caffeine, water and beverage type

Effects of hot tea, coffee and water ingestion on physiological responses and mood: the role of caffeine, water and beverage type

A critical review of caffeine withdrawal: empirical validation of symptoms and signs, incidence, severity, and associated features

Caffeine and physical training: effects on cardiac morphology and cardiovascular response

Contact Info

Product

Resources

About