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Feb 22 • 5 tweets • 2 min read
This one suggests that conventional daily caffeine intake does not provide sufficient time for the elimination of caffeine and paraxanthine. Image
- Worse still, even though the salivary caffeine nearly reaches a clear state, the caffeine-associated brain responses seem to require a longer time to be fully restored.
"The concurrence of a reduced hippocampal GM intensity and an incomplete caffeine elimination, together with a GM recovery after being deprived of caffeine, underscore the importance of a sufficient cessation period...
"...The overcompensation of the CBF response after the caffeine deprivation, again, points to a longer time, perhaps some consecutive days, for full recovery."
Time to Recover From Daily Caffeine Intake (open access)

doi.org/10.3389/fnut.2…

#nutrition #diet #caffeine #coffee

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More from @nick_krontiris

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Feb 22
This systematic review and meta-analysis of RCTs comes to the conclusion that ~700 METs-min/week is the minimal dose to elicit clinically important changes in cognition in older adults.
- The estimated minimal exercise dose found that can elicit clinically relevant changes in cognition was 724 METs-min per week, with doses beyond the upper bound of WHO recommended level of physical activity providing less clear benefits.
- 724 METs-min per week is slightly above the lower bound of WHO recommended level of physical activity (i.e. 600 METs-min per week, equivalent to 150 min/week of moderate intensity or 75 min/week of vigorous activity).
Read 12 tweets
Nick Krontiris Profile picture
Feb 22
This Mendelian randomization analysis suggests that VAT mass is associated with a wide range of CVD outcomes including coronary heart disease, cardiac arrhythmia, vascular diseases, and stroke, with some circulating proteins being potential mediators of this association. Image
- Among these proteins, genetically estimated VAT mass had the highest OR value for the expression of leptin.
- Excessive VAT increased the level of leptin and further increased the incidence of all-cause heart failure, atrial fibrillation and flutter, DVT of lower extremities, pulmonary embolism, and DVT of lower extremities and pulmonary embolism.
Read 4 tweets
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Feb 22
This systematic review and meta-analysis aimed to investigate the efficacy of increasing dietary protein ingestion to improve lean body mass gain, skeletal muscle strength, and physical function in healthy subjects.
- Additional protein ingestion together with resistance training leads to small additional lean body mass and lower body strength.
- This effect seems to be more prominent in younger subjects ingesting ≥1.6 g/kg/day.
Read 8 tweets
Nick Krontiris Profile picture
Feb 22
This study explored the effect of three different modes of resistance training on appetite hormones, cardiometabolic and anthropometric measures in males with obesity.
- 44 males with obesity were randomized to traditional resistance training (TRT, n = 11), circuit resistance training (CRT, n = 11), interval resistance training (IRT, n = 11) or control (C, n = 11) groups.
- All resistance training groups received 50 min of supervised training per session, three days per week, for 12 weeks.
Read 12 tweets
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Feb 22
This one suggests that individuals with high serum microRNA-122 levels may be less responsive during diet/physical activity-induced weight loss, as far as hepatic fat content loss is concerned.
- In the current study of participants with abdominal obesity or dyslipidemia from an 18-month randomized, controlled diet and physical activity intervention trial, it was observed that serum miR-122 levels were positively associated with hepatic fat percentage at baseline.
- A greater elevation in miR-122 from baseline to 18 months was associated with a smaller reduction in hepatic fat content during the 18-month intervention process.
Read 5 tweets
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Feb 22
This one aimed to assess whether inflammation mediates the Black-White incident diabetes disparity.
- In this prospective cohort study of Black and White adults, Black adults had higher CRP and higher rates of incident diabetes than White adults.
- Inflammation as measured by CRP was found to be a risk factor for diabetes regardless of race.
Read 7 tweets

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