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All-rhythms survival increased from phase 1 to phase 2 (20/231, 8.7% versus 35/252, 13.9% difference 5.2% 95% CI -0.4% to 10.8%), with an adjusted odds ratio of 2.72 (95% CI 1.15 to 6.41), controlling for initial rhythm, witnessed arrest, age, minimally interrupted cardiac resuscitation protocol compliance, and provision of therapeutic hypothermia. CPR quality measures improved significantly from phase 1 to phase 2: Mean chest compression rate decreased from 128 to 106 chest compressions per minute (difference -23 chest compressions 95% confidence interval -26 to -19 chest compressions) mean chest compression depth increased from 1.78 to 2.15 inches (difference 0.38 inches 95% CI 0.28 to 0.47 inches) median chest compression fraction increased from 66.2% to 83.7% (difference 17.6% 95% CI 15.0% to 20.1%) median preshock pause decreased from 26.9 to 15.5 seconds (difference -11.4 seconds 95% CI -15.7 to -7.2 seconds), and mean ventilation rate decreased from 11.7 to 9.5/minute (difference -2.2/minute 95% CI -3.9 to -0.5/minute). Median age was 68 years (interquartile range 56-79) 66.5% were men. Multiple imputation of missing data was used to analyze the effect of interventions on CPR quality.Īnalysis included 484 out-of-hospital cardiac arrest patients (phase 1 232 phase 2 252). The effect of interventions on survival to hospital discharge was assessed with multivariable logistic regression.
WARSHIFT TRAINER 1.47 PROFESSIONAL
Phase 2 included 16 months (May 2010 to September 2011) after scenario-based training of 373 professional rescuers and real-time audiovisual feedback enabled. Phase 1 included 18 months with real-time audiovisual feedback disabled (October 2008 to March 2010). Data were obtained from out-of-hospital forms and defibrillators. This was a before-after study of consecutive adult out-of-hospital cardiac arrest. The authors suggest that health outcomes in response to sprint interval training be examined in children.We assess whether an initiative to optimize out-of-hospital provider cardiopulmonary resuscitation (CPR) quality is associated with improved CPR quality and increased survival from out-of-hospital cardiac arrest. These data indicate that acute sprint interval exercise leads to short-term increases in oxygen uptake and reduced blood pressure in youth. Post hoc tests revealed that systolic blood pressure was significantly lower than in control at 90 min postexercise (control 104 mm Hg, exercise 99 mm Hg p<.05). However, total fat oxidation did not differ between trials (control 4.5 g, exercise 5.4 g p=.247).
WARSHIFT TRAINER 1.47 TRIAL
After exercise, RER was elevated above control but then fell rapidly and was lower than control 30-60 min postexercise, and fat oxidation was significantly higher in the exercise than control trial 45-60 min postexercise. Total postexercise oxygen uptake was significantly higher in the exercise than control trial over the 90 min (mean : control 20.0 L, exercise 24.8 L p=.030). Time-matched measurements of oxygen consumption, RER, and blood pressure were made 90 min into recovery, and substrate oxidation were calculated over the time period. After overnight fasts, each participant undertook 2 trials in a random balanced order: (a) two 30-s bouts of sprint interval exercise on a cycle ergometer and (b) rested in the laboratory for an equivalent period. Participants were 10 normal-weight healthy youth (7 female), age 15-18 years. The current study examined the effect of sprint interval exercise on postexercise oxygen consumption, respiratory-exchange ratio (RER), substrate oxidation, and blood pressure in adolescents.