Strength exercises like these can be done at home to improve your health and mobility.

Do not worry if you have not done much for a while, these strength exercises are gentle and easy to follow.

For the chair-based exercises, choose a solid, stable chair that does not have wheels and that will not slip on the surface it is on.

You should be able to sit with your feet flat on the floor and your knees bent at right angles. Avoid chairs with arms, as these will restrict your movement.

Wear loose, comfortable clothing and keep some water handy.

Build up slowly and aim to gradually increase the repetitions of each exercise over time.

Try to do these exercises at least twice a week and combine them with the other routines in this series:

• sitting exercises
• flexibility exercises
• balance exercises

A. Sit on the edge of the chair, feet hip-width apart. Lean slightly forwards.

B. Stand up slowly using your legs, not arms. Keep looking forward and do not look down.

C. Stand upright and then slowly sit down, using your hands or arms just to guide you if possible .

Aim for 5 repetitions. The slower the repetitions, the better.

A. Rest your hands on the back of the chair for stability and stand with your feet hip-width apart.

B. Slowly bend your knees as far as is comfortable, keeping them facing forwards. Aim to get them over your big toe. Keep your back straight at all times.

C. Gently come up to standing, squeezing (clenching) your buttocks as you do so.

Repeat 5 times.

A. Rest your hands on the back of a chair for stability.

B. Lift both heels off the floor as far as is comfortable. The movement should be slow and controlled.

Repeat 5 times.

To make this more difficult, perform the exercise without support.

A. Rest your hands on the back of a chair for stability.

B. Raise your left leg to the side as far as is comfortable, keeping your back and hips straight. Avoid tilting to the right.

C. Return to the starting position. Now raise your right leg to the side as far as possible.

Raise and lower each leg 5 times.

A. Rest your hands on the back of a chair for stability.

B. Standing upright, raise your left leg backwards, keeping it straight. Avoid arching your back as you take your leg back. You should feel the effort in the back of your thigh and bottom.

C. Repeat with the right leg.

Hold the lift for up to 5 seconds and repeat 5 times with each leg.

A. Stand at arm's length from the wall. Place your hands flat against the wall at chest level, with your fingers pointing upwards.

B. With your back straight, slowly bend your arms, keeping your elbows by your side. Aim to close the gap between you and the wall as much as you can.

C. Slowly return to the start.

Attempt 3 sets of 5 to 10 repetitions.

A. Hold a pair of light weights (filled water bottles will do) and stand with your feet hip-width apart.

B. Keeping your arms by your side, slowly bend them until the weight in your hand reaches your shoulder.

C. Slowly lower again.

This can also be carried out while sitting. Attempt 3 sets of 5 curls with each arm.