Group items tagged

Summary of 2010 report on marathons and the heart.  Less fit runners can do significant damage to the heart i.e. fibrosis compared to fit runners.  V02 max is a good way to assess aerobic endurance and differentiate between the two.  Dr Larose showed via MRI that it can take 3 months for the heart to recover.

Arnica found to lower muscle soreness after marathons, but not found to lower cell damage markers.

ibuprofen provided no reduction in muscle damage/soreness in 29 ultra marathoners.  However, LPS, CRP, IL-6, IL-10, IL-8, IL-1ra, GSF, MCP-1, and MIP-1beta were increased in the ibuprofen group.  TNF-alpha was unaffected.

Nice review of the treatment of hyper/hyponatremia with marathon runners.

This study shows that "healthy marathon" runners may not be as healthy as once thought.  Basically, current strategies to assess coronary artery calcification is inadequate.  Point: damage is being done that is not being detected.

No cases of hyponatremia noted in marathon runners.   Of note, over hydration was prevented through limited stations enroute.  NSAIDS negatively altered renal function

no surprise that sedentary lifestyle associated with decreased lifespan. Exercise is beneficial in normal weight and obese individuals.  Also of note, one does not need to train for a marathon to see the health benefits.  Exercise is more about intensity than it is about duration/frequency.

to be read

Body weight post race was inversely associated with serum sodium i.e.  less weight loss was associated with lower serum sodium.  Body weight loss was unrelated to marathon time.

The majority of ultra marathon runners deal with hypernatremia versus hyponatremia.  The majority were normonatremic.  Intravenous fluids can more rapidly resolve hypernatremia versus oral liquids and serves as useful means to reduce hypernatremia when oral liquids proves intolerable.

Study finds endurance racing results in reduce Right ventricle ejection fraction even in elite athletes.  This post-race RVEF reduction is associated with VO2max.

great review of data on cardiac damage associated with extreme endurance training.  These EEEs, that they are called, are rare in those < 40 and usually involved genetic defects.  This article points to aggressive preventive testing in those > 50.

event over hydration with under renal excretion can lead to hyponatremia.  SIADH and resultant increased ECW is involved.  Weight is an adequate means to evaluate--no weight loss and/or weight gain may suggest fluid overload and potential hyponatremia.

Study looked at 9 athletes that were treated with IV fluids and found no significant morbidity with exercise associated hyponatremia.

study finds IV hydration with glucose and larger volume did not recover as well as those with 100 ml  of IV fluids.  This conclusion is incomplete as the time differences between the 2 groups was significant--group 2 (2.5 L fluid group) finished much faster and studies have shown that these endurance athletes are more prone to dehydration, more significant weight loss, adverse effects from the event.  This likely explains the difference between the 2 groups.

Nutrition for ultra endurance.  To be read.