Massage & Posture
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The hidden cause of lower back pain
The psoas muscle is a very deep muscle that connects your torso to your legs. It affects your posture and helps you to stabilise your spine. In fact, whether you run, bike, dance, practice yoga, or just hang out on your couch, your psoas muscles are involved. A person suffering from IlioPsoas syndrome may have pain in the hip and thigh region, as well as hip stiffness and in some cases a clicking or snapping hip. Other signs which may indicate an unhappy psoas muscle are:
- Knee pain - if there is no obvious source then it may be your psoas muscle.
- Constipation - a tight psoas muscle can cause or contribute to constipation.
- Menstrual cramps - a tight psoas muscle can put pressure on reproductive organs contributing to menstrual cramps.

So how does massage reduce pain? – Part 1
I said in a previous post that scientists are interested in finding out how massage works. So if we accept that massage reduces muscle pain, that leaves the question, "How does massage reduce muscle pain?". In 1965, Ronald Melzack and Patrick Wall outlined a scientific theory about psychological influence on pain perception; the ‘gate control theory’. According to the gate control theory, pain signals are not free to reach the brain as soon as they are generated at the injured tissues or sites. They need to encounter certain ‘neurological gates’ at the spinal cord level and these gates determine whether the pain signals should reach the brain or not. In other words, pain is perceived when the gate gives way to the pain signals and it is less intense or not at all perceived when the gate closes for the signals to pass through. Cutaneous mechano-receptors are stimulated by touch (massage) and transmit information within large never fibres to the spinal cord. These impulses block the passage of painful stimuli entering the same spinal segment along small, slowly conducting neurons. This theory gives the explanation for why someone finds relief by rubbing or massaging an injured or a painful area. For example, the pain gate theory explains "how" a child feels better after mum or dad intuitively rub their knee when they have fallen over. In summary massage produces short term pain relief by being a particularly effective trigger for the pain gate process. References Melzack R, & Wall PD (1965). Pain mechanisms: a new theory. Science (New York, N.Y.), 150 (3699), 971-9 Moayedi M, & Davis KD (2013). Theories of pain: from specificity to gate control. Journal of neurophysiology, 109 (1), 5-12 Jacobs M. (1960) Massage for the relief of pain: anatomical and physiological considerations. Physical Therapy Review, 40: 93-8 Melzack R, Wall PD. Pain mechanisms: a new theory. Science. 1965 Nov 19;150(3699):971–979. Wells PE, Frampton V, Bowsher D. (1988) Pain: Management and Control in Physiotherapy. Heinemann Medical. Chapter 13. Watson J. (1982) Pain mechanisms: a review. 1. Characteristics of the peripheral receptors. Australian Journal of Physiotherapy. 27:135-43


