Eat Meat And Stop Jogging: 'Common' Advice On How To Get Fit Is Keeping You Fat And Making You Sick by Mike Sheridan Page B
Authors: Mike Sheridan
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what one would experience from over-training or too much stress. Again, we see a positive correlation with longer training durations:
6 times as many runners experience URTIs following marathons compared to non-participating runners.
Runners that run 96km/week or more, had twice the risk of URTI than those doing 32km/week (1/3rd the mil eage).
Intensi ty also plays a factor as walking produces favorable reductions in URTIs:
E lderly individuals walking 45min 5xWeek reduced infection by 50% compared to sedentary.
I mmune function appears to be the worst when there’s a moderate-to-high intensity (60-80%) and a longer duration (90min):
And it’s not just runners! One study looked at 24 swimmers, and the rate of respiratory infection was higher in the well-trained swimmers (56%), compared to the amateurs (12.5%). Although speculative, this could suggest that the repetitiveness of the exercise and the cumulative affect on the body may be the most detrimental.
“Excessive is training with insufficient rest and variety of trai ning.”
Asthma and allergies appear to be highly prevalent as well, as one study tested 42 elite runners of which 23 had asthma and 31 ast hma like symptoms. Another study from Finland tested 103 athletes with an average age of 23, reported 16 with asthma, 24 with allergies, and more than half with asthma-like symptoms or exercise-induced asthma.
A 1984 study in the American Journal of Sports Medicine, found that 29% of female endurance athletes have amenorrhea, which is a disruption in menstrual cycle. Amenorrhea results in a delayed or missed periods, and researchers point to a ‘lack of available calories’ as the driving force in producing these unfavorable consequences. It’s suspected that the total ‘amount’ of training is to blame for these high instances of amenorrhea in female long distance runners. Again we see a connection between chronic cardio and signs of early aging, as amenorrhea from over-exercising has been linked to bone loss.
Likewise, a 1994 study found that high-mileage male runners have lower sperm counts and motility than low-mileage runners. Considering the extremely high blood concentration of stress hormones with longer durations and higher intensities, it’s not surprising to see the disrupted release of reproductive hormones. The oxidative stress from long distance endurance training produces significant decreases in the size of the reproductive organs, and cortisol has been shown to reduce testosterone and androgen levels.
The other important consideration for those deciding to partake in long-distance running is the increased loss of blood, and the iron that goes with it. Women are already at an extremely high risk of anemia (low iron) because of their monthly blood loss, and generally low red meat intake. Research has identified a clear link between anemia and runners, and the statistics suggest that it’s also quite prevalent in males. In fact, most endurance athletes appear to be at a consistent iron deficiency, losing 1.7-2.2g/day while only absorbing 1g/day.
Cardio = Cardiovascular Problems?
Although the other negatives of selecting cardio to stay healthy have been eye opening, this one tends to sting the most. The main reason a lot of people decide to start running or biking is to improve their ‘heart health.’ So finding out that this activity does the opposite can be extremely troubling. I can’t help but think of someone out there running their butt off to get in shape or stay healthy, when in fact they’re doing more harm than good. As they continue to get better at it, they push the limits to strengthen that blood pumping muscle, when meanwhile the are putting their cardiovascular health at risk.
Overtraining is a common mistake many athletes make in preparation for competition, and perhaps more common in the general population when they decide it’s time to ‘get fit.’ January 1st roles
6 times as many runners experience URTIs following marathons compared to non-participating runners.
Runners that run 96km/week or more, had twice the risk of URTI than those doing 32km/week (1/3rd the mil eage).
Intensi ty also plays a factor as walking produces favorable reductions in URTIs:
E lderly individuals walking 45min 5xWeek reduced infection by 50% compared to sedentary.
I mmune function appears to be the worst when there’s a moderate-to-high intensity (60-80%) and a longer duration (90min):
And it’s not just runners! One study looked at 24 swimmers, and the rate of respiratory infection was higher in the well-trained swimmers (56%), compared to the amateurs (12.5%). Although speculative, this could suggest that the repetitiveness of the exercise and the cumulative affect on the body may be the most detrimental.
“Excessive is training with insufficient rest and variety of trai ning.”
Asthma and allergies appear to be highly prevalent as well, as one study tested 42 elite runners of which 23 had asthma and 31 ast hma like symptoms. Another study from Finland tested 103 athletes with an average age of 23, reported 16 with asthma, 24 with allergies, and more than half with asthma-like symptoms or exercise-induced asthma.
A 1984 study in the American Journal of Sports Medicine, found that 29% of female endurance athletes have amenorrhea, which is a disruption in menstrual cycle. Amenorrhea results in a delayed or missed periods, and researchers point to a ‘lack of available calories’ as the driving force in producing these unfavorable consequences. It’s suspected that the total ‘amount’ of training is to blame for these high instances of amenorrhea in female long distance runners. Again we see a connection between chronic cardio and signs of early aging, as amenorrhea from over-exercising has been linked to bone loss.
Likewise, a 1994 study found that high-mileage male runners have lower sperm counts and motility than low-mileage runners. Considering the extremely high blood concentration of stress hormones with longer durations and higher intensities, it’s not surprising to see the disrupted release of reproductive hormones. The oxidative stress from long distance endurance training produces significant decreases in the size of the reproductive organs, and cortisol has been shown to reduce testosterone and androgen levels.
The other important consideration for those deciding to partake in long-distance running is the increased loss of blood, and the iron that goes with it. Women are already at an extremely high risk of anemia (low iron) because of their monthly blood loss, and generally low red meat intake. Research has identified a clear link between anemia and runners, and the statistics suggest that it’s also quite prevalent in males. In fact, most endurance athletes appear to be at a consistent iron deficiency, losing 1.7-2.2g/day while only absorbing 1g/day.
Cardio = Cardiovascular Problems?
Although the other negatives of selecting cardio to stay healthy have been eye opening, this one tends to sting the most. The main reason a lot of people decide to start running or biking is to improve their ‘heart health.’ So finding out that this activity does the opposite can be extremely troubling. I can’t help but think of someone out there running their butt off to get in shape or stay healthy, when in fact they’re doing more harm than good. As they continue to get better at it, they push the limits to strengthen that blood pumping muscle, when meanwhile the are putting their cardiovascular health at risk.
Overtraining is a common mistake many athletes make in preparation for competition, and perhaps more common in the general population when they decide it’s time to ‘get fit.’ January 1st roles
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