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Watermelon Helps Soothe Aching Muscles

Posted Aug 24 2013 10:07pm

l-Citrulline, an amino acid shown in previous studies to reduce muscle soreness, is found abundantly in watermelons, as well as certain squashes, cucumbers, and other melons.  Martha P. Tarazona-Díaz, from the  Universidad Politecnica de Cartagena  (Spain), and colleagues administered 500 mL of natural watermelon juice (containing 1.17 g of l-Citrulline), enriched watermelon juice (4.83 g of l-Citrulline plus 1.17 g naturally occurring), or a control beverage, to seven healthy university-age sports science students (average age 22.7 years).  Whereas neither juice form improved pedaling cadence, heart rate, or perceived exertion, both juice forms reduced muscle soreness 24-hours post-exercise.  The study authors report that: “watermelon juices helped to reduce the recovery heart rate and muscle soreness after 24 h.”

Tarazona-Díaz MP, Alacid F, Carrasco M, Martínez I, Aguayo E.  “Watermelon Juice: Potential Functional Drink for Sore Muscle Relief in Athletes.”  J Agric Food Chem. 2013 Jul 29.

  
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Anti-Aging Forum MLDP Join A4M
Tip #192 - Stay Connected
Researchers from the University of Chicago (Illinois, USA) report that social isolation may be detrimental to both mental and physical health. The team analyzed data from the National Social Life, Health, and Aging Project, a nationwide US study involving 3,000 men and women, ages 57 to 85 years. They arrived at three key findings regarding the relationships between health and different types of isolation:

• The researchers found that the most socially connected older adults are three times as likely to report very good or excellent health compared to those who are least connected, regardless of whether they feel isolated.

• The team found that older adults who feel least isolated are five times as likely to report very good or excellent health as those who feel most isolated, regardless of their actual level of social connectedness.

• They determined that social disconnectedness is not related to mental health unless it brings feelings of loneliness and isolation.

Separately, Rush University Medical Center (Illinois, USA) researchers studied 906 older men and women, testing their motor functions (including grip, pinch strength, balance, and walking) and surveying their social activity, for a period of 5 years. Those study participants with less social activity were found to have a more rapid rate of motor function decline. Specifically, the team found that every one-point decrease in social activity corresponded to an increase in functional aging of 5 years, translating to a 40% higher risk of death and 65% higher risk of disability.

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