How much exercise?

So how much exercise should you take?

The effectiveness of exercise is proportional to its intensity and total dose. From what I said last week, you would be right to presume that optimal exercising should be about 30 to 40 minutes of exercise three or four times per week to a level which makes you reasonably out of breath. This is also sufficient exercise to have a highly significant effect in both the prevention and treatment of a number of diseases.

It is not enough exercise if you wish to compete as a serious sportsman. Committed runners, cyclists, squash players, footballers and competitive tennis players for instance need to be far fitter than would be allowed by this relatively modest regime – but they do risk injury for their sport and the older they become the bigger a problem this becomes.

Department of Health Guidelines

The current NHS Guideline recommends a mix of aerobic exercise and muscle strengthening.

“To stay healthy, adults aged 19-64 should try to be active daily and should do:

• At least 150 minutes (2 hours and 30 minutes) of moderate-intensity aerobic activity such as cycling or fast walking every week, and
• muscle-strengthening activities on 2 or more days a week that work all major muscle groups (legs, hips, back, abdomen, chest, shoulders and arms).

• 75 minutes (1 hour and 15 minutes) of vigorous-intensity aerobic activity such as running or a game of singles tennis every week, and
• muscle-strengthening activities on 2 or more days a week that work all major muscle groups (legs, hips, back, abdomen, chest, shoulders and arms).

• An equivalent mix of moderate- and vigorous-intensity aerobic activity every week (for example 2 30-minute runs plus 30 minutes of fast walking), and
• muscle-strengthening activities on 2 or more days a week that work all major muscle groups (legs, hips, back, abdomen, chest, shoulders and arms).

A rule of thumb is that 1 minute of vigorous-intensity activity is about the same as 2 minutes of moderate-intensity activity.”

What counts as moderate exercise?

One way to do your recommended 150 minutes of weekly physical activity is to do 30 minutes on 5 days a week.

Examples of activities that require moderate effort for most people include:

• walking fast
• water aerobics
• riding a bike on level ground or with few hills
• doubles tennis
• pushing a lawn mower
• hiking
• skateboarding
• rollerblading
• volleyball
• basketball

Moderate-intensity activity will raise your heart rate and make you breathe faster and feel warmer. One way to tell if you’re working at a moderate intensity is if you can still talk, but you can’t sing the words to a song.

What counts as vigorous-intensity activity?

There is substantial evidence that vigorous-intensity activity can bring health benefits over and above that of moderate intensity activity.
Examples of activities that require vigorous effort for most people include:

• jogging or running
• swimming fast
• riding a bike fast or on hills
• singles tennis
• football
• rugby
• skipping rope
• hockey
• aerobics
• gymnastics
• martial arts

Vigorous-intensity activity means you’re breathing hard and fast, and your heart rate has gone up quite a bit. If you’re working at this level, you won’t be able to say more than a few words without pausing for a breath.

In general, 75 minutes of vigorous-intensity activity can give similar health benefits to 150 minutes of moderate-intensity activity.

What counts as muscle-strengthening activity?

The caption to this week’s illustration is the Mae West quote: ‘I go for two kinds of men. The kind with muscles and the kind without.’ 

Muscle strength is necessary for daily activities, to build and maintain strong bones, to regulate blood sugar and blood pressure and to help maintain a healthy weight.
Muscle-strengthening exercises are counted in repetitions and sets. A repetition is 1 complete movement of an activity, like lifting a weight or doing a sit-up. A set is a group of repetitions.
For each activity, try to do 8 to 12 repetitions in each set. Try to do at least 1 set of each muscle-strengthening activity. You’ll get even more benefits if you do 2 or 3 sets.

What about golf?

The DoH recommendations ignore golf and what an excellent exercise it is. It combines long walks with concentration, social interaction, a challenge and the possibility of increasing its intensity if you pull your clubs or, even better, if you carry. More of this next week.

PS: Hampshire Open Studios

August sees the Hampshire Open Studio initiative. Many artists across the county open their studios for visits by the general public. One such artist is the excellent illustrator of these blogs, Toni Goffe. As well as drawing pictures for the blog his cartoons also appear in Private Eye and The Oldie. However he is much more than a cartoonist. His humorous cat pictures are famous and he also paints other animals, landscapes and scenes of everyday life.

He is open today and tomorrow (21, 22 August) and then from Friday to Monday next week (27-30 August) from 10am to 4pm. If you live in or near Alton do go along – Address The Manse, 56 Ackender Road, Alton GU34 1JS. Bargains galore!