Tension headaches can be prevented, or at least made milder by strength training, according to a new Danish study just published in the journal of the International Headache Society, Cephalalgia.

Tension-type headache is the most common type of headaches and it is usually accompanied by increased muscle tenderness.

The researchers compared muscle strength in neck and shoulder muscles in 60 patients with tension-type headaches and 30 healthy controls, using rigorous strength measurement techniques. Patients were included if they had tension-type headaches on more than 8 days per month and had no more than 3 migraines a month. Compared to controls headache patients had significantly weaker muscle strength in neck extension, which helps keep the head straight. Headache patients also showed a tendency toward significantly lower muscle strength in shoulder muscles. Among the 60 headache patients, 25 had frequent headaches and 35 had chronic tension-type headaches (defined as occurring on 15 or more days each month).

The use of computers, laptops, tablets, and smart phones has increased in recent years and this may increase the time people are sitting with a forward leaning head posture, which contributes to neck muscle weakness.

Neck pain and tenderness is a common symptom in both tension-type and migraine headache sufferers.

This is not the first study to show that muscle strength and weakness were associated with tension-type headaches, but it is still not clear whether the muscle weakness is the cause or the effect of headaches. Neck and shoulder strengthening exercises have been shown to reduce neck pain in previous studies and in my experience strengthening neck muscles will often relieve not only tension-type headaches, but also migraines. So it is most likely that there is not a clear cause-and-effect relationship, but a vicious cycle of neck pain causing headaches and headaches causing worsening of neck pain and neck muscle weakness.

Physical therapy can help, but the mainstay of treatment is strengthening neck exercises. Here is a YouTube video showing how to do them. The exercise takes less than a minute, but needs to be repeated many times throughout the day (10 or more). Many people have difficulty remembering to do them, so using your cell phone alarm can help. Other treatment measures include being aware of your posture when sitting in front of a computer or when using your smart phone, wearing a head set if you spend long periods of time on the phone, doing yoga or other upper body exercises, in addition to the isometrics.

Sometimes pain medications or muscle relaxants are necessary, while for very severe pain, nerve blocks and trigger point injections can help. Persistent neck pain can respond to Botox injections. When treating chronic migraines with Botox, the standard protocol includes injections of neck and shoulder/upper back muscles. Here is a video of a typical Botox treatment procedure for chronic migraines.