Q&A #66 - Whoop and Halo Sport - the next big things or riding the hype wave? 

• What is the evidence supporting the Whoop strap, that measures heart rate, heart rate variability (HRV) and tracks sleep? 
• Is continuous HRV-measurement overnight better than a standardised morning measurement? 
• Is there any validation for the accuracy of Whoop's measurements?
• What is the evidence supporting the Halo Sport neurostimulator, that uses transcranial direct current stimulation (tDCS) to supposedly improve athletic performance? 
• Issues with the marketing of both the Whoop and Halo Sport devices

  LINKS AND RESOURCES:

• That Triathlon Show website 
• Coaching
• Training Plans
• Electrolyte beverage consumption alters electrically induced cramping threshold
• New lab-based evidence suggests electrolyte intake can help reduce cramps - Precision Hydration blog
• HRV-article by Marco Altini
• Is Brain Stimulation the Next Big Thing? - Alex Hutchinson
• The Ergogenic Effects of Transcranial Direct Current Stimulation on Exercise Performance
• Effect of transcranial direct current stimulation on exercise performance: A systematic review and meta-analysis.
• The effects of transcranial direct current stimulation on objective and subjective indexes of exercise performance: A systematic review and meta-analysis.

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