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Fitness_South_Africa_JulyAugust_2017

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fitnessnews<br />

10 AS GOOD AS 50<br />

A10-minute workout that consists<br />

of three 20-second all-out<br />

intervals to exhaustion, followed<br />

by brief recoveries, can be just as<br />

effective as a typical 50-minute<br />

session according to new research from<br />

Martin Gibala, an exercise physiologist<br />

at McMaster University in Ontario.<br />

Both workouts resulted in identical<br />

improvements in heart function and<br />

blood-sugar control, even though one<br />

<br />

other.<br />

15 000<br />

– the new target for steps<br />

per day that researchers at the<br />

University of Warwick in England (in<br />

conjunction with other institutions)<br />

determined was required to<br />

improve our health,<br />

based on reference<br />

to a foundational<br />

Transit Workers<br />

<br />

used to determine<br />

the 10,000 steps-aday<br />

guideline. The team then advanced and<br />

expanded on these results by examining other<br />

groups of employees whose workdays involve<br />

mostly walking or sitting, including postal<br />

<br />

were published in The International Journal of<br />

Obesity.<br />

TRAIN HARD, REST HARD<br />

A new study by researchers from<br />

Brock University in Canada suggests<br />

that extended, high-intensity training<br />

sessions (in this case elite rowers)<br />

<br />

bone mineral density that<br />

are usually associated<br />

with exercise,<br />

without adequate<br />

rest. Regular exercise<br />

should be an important<br />

protective mechanism<br />

against bone fractures<br />

and osteoporosis,<br />

particularly<br />

among women.<br />

fitness<br />

s<br />

b y<br />

G-FORCE<br />

The forces imparted<br />

by walking have been<br />

shown to improve blood<br />

supply to the brain as the<br />

resultant pressure waves<br />

travel through arteries<br />

and significantly modify<br />

blood circulation to the<br />

brain. Researchers at<br />

New Mexico Highlands<br />

University determined this<br />

was a contributing factor<br />

to the brain-health benefits<br />

of exercise, with running<br />

causing similar, yet<br />

significantly greater impact<br />

forces of up to 4-5G that<br />

boosted cerebral blood flow.<br />

The research was presented<br />

at the APS annual meeting<br />

at Experimental Biology<br />

<strong>2017</strong> in Chicago.<br />

34<br />

JULY - AUGUST <strong>2017</strong> |

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