The Impact of Sitting All Day – Part 4
In part 1, I looked at the impact of sitting on your muscles, and in part 2 generally explored the impact on the rest of your body. In part 3 I focused on the impact of sitting on your circulatory system including your heart. In this article I will explore the impact of sedentary behaviour (sitting) and the link to cancer.
So how common is cancer?
According to Cancer Research UK
- Every two minutes someone in the UK is diagnosed with cancer.
- 1 in 2 people in the UK born after 1960 will be diagnosed with some form of cancer during their lifetime.
- Breast, lung, prostate and bowel cancers together account for over half of all new cancers each year.
- Overall cancer incidence rates in Great Britain have increased by more than a third since the mid-1970s, with almost this entire rise occurring before the late 1990s.
And here is the good news is more people survive cancer than die from it now.
- 46% of men and 54% of women cancer patients diagnosed in 2010-2011 in England and Wales are predicted to survive 10 or more years.
- Cancer survival in the UK has doubled in the last 40 years.
The Link Between Cancer & Inactivity
Last year in a meta-analysis, Daniela Schmid and Michael F. Leitzmann of the University of Regensburg in Germany analyzed 43 observational studies, amounting to more than 4 million people’s answers to questions about their sitting behavior and cancer incidences. The researchers examined close to 70,000 cancer cases and found that sitting is associated with a 24% increased risk of colon cancer, a 32% increased risk of endometrial cancer, and a 21% increased risk of lung cancer.
D Schmid & MF Leitzmann, 2014, Sedentary behaviour insreases the risk of certain cancers, Journal of National Institute of Cancer, Volume 106, No 7. see http://jnci.oxfordjournals.org/content/106/7/dju206.full
The really bad news is that your can’t exercise away the harmful effects, “Adjustment for physical activity did not affect the positive association between sedentary behavior and cancer” write Schmid & Leitzmann. Even participants who achieved the daily recommended levels of physical activity were at the same risk as those who spent their day sitting.
One theory as to why this is the case, is that regular movement boosts natural antioxidants that kill cell-damaging and potentially cancer-causing free radicals, another theory is that the excess insulin encourages cell growth.
The pancreas produces insulin, a hormone that carries glucose to cells for energy. But cells in idle muscles don’t respond as readily to insulin, so the pancreas produces more and more. A 2011 study by Stephens et al found a decline in insulin response after just one day of prolonged sitting.
Stephens et al, 2001, Effects of 1 day of inactivity on insulin action in healthy men and women: interaction with energy intake, Metabolism Volume 60, No 7 pages 941 – 949. see http://www.sciencedirect.com/science/article/pii/S002604951000315X
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More oops I did it again ….
We all wonder why after an injury or issue has healed and after several weeks of feeling pretty good, bang it flares up again, why? Last week I explained so factors influencing why this happens, now I want to explore the physiological aspects. The Physiological Law of Facilitation (the path of least resistance) The law explains why old injuries flare up under stress.
When an impulse has passed once through a certain set of neurons in your brain to the exclusion of others, it will tend to take the same course on a future occasion, and each time it does, the resistance will become less.
An analogy of this would be the image of rain on a dirt hill each time it rains the pathway becomes more entrenched, larger, and more intricate spreading out to nearby pathways. So once a nerve learns a pain pattern it tends to repeat it even in the absence of the injury. So the effects of stress to your mind and body can be a trigger for this response to kick in.
But wait, there is good news!
The Law of Facilitation can be maneuvered to help a massage therapist make the benefits of their treatment last longer. You may be wandering how can this be? In massage, patterns of imbalance which result from trauma, or from habitually stressful patterns like poor posture can be addressed. So your body should adapt to changes taking place in the musculoskeletal system and create new pathways.
The body likes sameness, which produces habitual patterns. When a pattern is established, it does not take as much stimulation to activate the response.Introduction to Carpal Tunnel Syndrome
Way back when I first started at Barclays, one of the first clients I treated was returning to work after being signed off with Carpal Tunnel Syndrome. Which is a common and painful disorder of the wrist, caused by pressure on the median nerve which creates numbness and tingling in the fingers. At its worse it can lead to loss of grip and permanent numbness in the fingers. Repetitive computer use thought to be one of the causes, but scientific studies have shown contradictory results. A recent review of the scientific evidence found that frequent computer or mouse use can nearly double the risk of developing the condition. Repeated tapping, scrolling and swiping on your smartphone or tablet can also lead ot carpal tunnel problems. If these sort of repeated movements are the cause then improving your posture will help. But it is also worth ruling out other possible causes such as:
- Diabetes
- Arthritis
- Thyriod Disease
Is the way you breathing causing your neck pain? – Part 1
If you have had a treatment with us, we may have talked to you about importance of deep breathing, if you have tension in your neck. Shallow breathing, thoracic breathing, or chest breathing is the drawing of minimal breath into the lungs, usually by drawing air into the chest area using accessory muscles rather than throughout the lungs via the diaphragm. This means that you over use some of the accessory muscles of breathing, including the scalenes and sternocleidomastoid muscles both of which are located in the side of the neck. The scalenes elevate the 1st rib during inspiration and the sternocleidomastoid raises the sternum. Unfortunately, these accessory muscles aren’t built for routine respiration, and they exhaust and eventually injure themselves which may result in pain and/or a reduced range of movement (i.e. inability to turn your head fully from side to side). People shallow breath when they are nervous, stressed, anxious, or when they concentrate. So simply stopping and taking one deep breath after you send each email, can reduce the over use of your scalenes and sternocleidomastoid.
