Acute effects of sprinting with a sledge upon regular sprinting performance

The aim of this study was to investigate the acute effect of sprinting with a sledge upon running performances in sprint. Thirty four (23 men and 11 women) secondary school and university students with athletics experience (age 20.21 ? 3.22yr, mass 65.04 ? 10.89 kg, 171.21 height ? 8.29 cm) participated in the study. The subjects performed this protocol in a two non-consecutive days, doing a rest day or easy training between the days of protocol. This protocol consisted of each participant perform each day a group of sprints, one day 7x60m alternating with normal and sledge running and the other day 7x60m of normal running. The weight of the sledge was 10% of body mass of each participant. It was found that training with the sledge or without it have the same training effect, thus there is no acute effect of sprinting with a sledge upon running performances in sprint. It is concluded that when an athlete reports that felt running faster after using sledge it seems ir is only a subjective feeling.O objetivo deste estudo foi investigar os efeitos agudos nas performances das corridas de velocidade usando um trenó como método de treino de resistência e depois correndo normal sem resistência. Trinta e quatro (23 homens e 11 mulheres) do ensino secundário e estudantes universitários com experiência na modalidade de atletismo (idade 20,21 ? 3.22 anos, massa 65,04 ? 10,89 kg, altura 171,21 ? 8,29 cm) participaram no estudo. Os indivíduos realizaram este protocolo em dois dias não consecutivos, fazendo um dia de descanso ou de treino mais leve entre os dias de protocolo. Este protocolo consistiu em cada participante realizar cada dia um grupo de sprints, um dia alternando 7x60m com corrida de velocidade normal e com o trenó e o outro dia 7x60m apenas com corrida velocidade normal. O peso do trenó foi de 10% da massa corporal de cada participante. Verificou-se que o treino com o trenó ou sem ele teria o mesmo efeito de treino, portanto, não há um efeito agudo de correr com um trenó e após fazer corrida de velocidade normal. Conclui-se que quando um atleta diz que se sentiu mais rápido a correr após o uso do trenó, pode ser apenas um sentimento subjetivo

Rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART): Study protocol for a randomized controlled trial

Background: Acute respiratory distress syndrome (ARDS) is associated with high in-hospital mortality. Alveolar recruitment followed by ventilation at optimal titrated PEEP may reduce ventilator-induced lung injury and improve oxygenation in patients with ARDS, but the effects on mortality and other clinical outcomes remain unknown. This article reports the rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART). Methods/Design: ART is a pragmatic, multicenter, randomized (concealed), controlled trial, which aims to determine if maximum stepwise alveolar recruitment associated with PEEP titration is able to increase 28-day survival in patients with ARDS compared to conventional treatment (ARDSNet strategy). We will enroll adult patients with ARDS of less than 72 h duration. The intervention group will receive an alveolar recruitment maneuver, with stepwise increases of PEEP achieving 45 cmH(2)O and peak pressure of 60 cmH2O, followed by ventilation with optimal PEEP titrated according to the static compliance of the respiratory system. In the control group, mechanical ventilation will follow a conventional protocol (ARDSNet). In both groups, we will use controlled volume mode with low tidal volumes (4 to 6 mL/kg of predicted body weight) and targeting plateau pressure <= 30 cmH2O. The primary outcome is 28-day survival, and the secondary outcomes are: length of ICU stay; length of hospital stay; pneumothorax requiring chest tube during first 7 days; barotrauma during first 7 days; mechanical ventilation-free days from days 1 to 28; ICU, in-hospital, and 6-month survival. ART is an event-guided trial planned to last until 520 events (deaths within 28 days) are observed. These events allow detection of a hazard ratio of 0.75, with 90% power and two-tailed type I error of 5%. All analysis will follow the intention-to-treat principle. Discussion: If the ART strategy with maximum recruitment and PEEP titration improves 28-day survival, this will represent a notable advance to the care of ARDS patients. Conversely, if the ART strategy is similar or inferior to the current evidence-based strategy (ARDSNet), this should also change current practice as many institutions routinely employ recruitment maneuvers and set PEEP levels according to some titration method.Hospital do Coracao (HCor) as part of the Program 'Hospitais de Excelencia a Servico do SUS (PROADI-SUS)'Brazilian Ministry of Healt

Rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART): Study protocol for a randomized controlled trial

Background: Acute respiratory distress syndrome (ARDS) is associated with high in-hospital mortality. Alveolar recruitment followed by ventilation at optimal titrated PEEP may reduce ventilator-induced lung injury and improve oxygenation in patients with ARDS, but the effects on mortality and other clinical outcomes remain unknown. This article reports the rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART). Methods/Design: ART is a pragmatic, multicenter, randomized (concealed), controlled trial, which aims to determine if maximum stepwise alveolar recruitment associated with PEEP titration is able to increase 28-day survival in patients with ARDS compared to conventional treatment (ARDSNet strategy). We will enroll adult patients with ARDS of less than 72 h duration. The intervention group will receive an alveolar recruitment maneuver, with stepwise increases of PEEP achieving 45 cmH(2)O and peak pressure of 60 cmH2O, followed by ventilation with optimal PEEP titrated according to the static compliance of the respiratory system. In the control group, mechanical ventilation will follow a conventional protocol (ARDSNet). In both groups, we will use controlled volume mode with low tidal volumes (4 to 6 mL/kg of predicted body weight) and targeting plateau pressure <= 30 cmH2O. The primary outcome is 28-day survival, and the secondary outcomes are: length of ICU stay; length of hospital stay; pneumothorax requiring chest tube during first 7 days; barotrauma during first 7 days; mechanical ventilation-free days from days 1 to 28; ICU, in-hospital, and 6-month survival. ART is an event-guided trial planned to last until 520 events (deaths within 28 days) are observed. These events allow detection of a hazard ratio of 0.75, with 90% power and two-tailed type I error of 5%. All analysis will follow the intention-to-treat principle. Discussion: If the ART strategy with maximum recruitment and PEEP titration improves 28-day survival, this will represent a notable advance to the care of ARDS patients. Conversely, if the ART strategy is similar or inferior to the current evidence-based strategy (ARDSNet), this should also change current practice as many institutions routinely employ recruitment maneuvers and set PEEP levels according to some titration method.13Hospital do Coracao (HCor) as part of the Program 'Hospitais de Excelencia a Servico do SUS (PROADI-SUS)'Brazilian Ministry of Healt

Proceedings Of The 23Rd Paediatric Rheumatology European Society Congress: Part Two

PubMe

ESICM LIVES 2016: part two : Milan, Italy. 1-5 October 2016.

Meeting abstrac