6 exercises to relieve lower back pain and improve posture, according to a physical therapist

• Most lower back pain is caused by poor posture, which can be fixed with core-strengthening exercises. 
• The best exercises to relieve lower back pain include planks, squats, and core work. 
• More effective lower back exercises include yoga, Pilates, and walking.
• Visit Insider's Health Reference library for more advice.

Lower back pain is common and occurs for a variety of causes, but is most often due to poor posture.

Strengthening your core muscles can help alleviate low back pain by building endurance in spine-supporting muscles, says Joseph Gjolaj, MD, an orthopedic surgeon and associate professor of orthopedics at the University of Miami Miller School of Medicine. This allows you to hold proper posture for longer.

 A 2015 review of studies found multiple types of core strengthening exercises alleviated chronic low back pain. It also found core training was more effective than typical resistance training in alleviating pain.

Such exercises also increase blood flow to the area, which helps promote healing to injured tissues, says Amanda Malone, a physical therapist at the Iowa Clinic. 

Malone recommends trying these simple at-home exercises that can reduce back pain by strengthening your core.

1. Lower trunk rotation

How to do it:

1. Lie on your back with your feet flat on the floor
2. Place your arms straight out to your sides.
3. Lower your knees to one side
4. Return to center
5. Repeat on the other side. Complete three sets of 10 repetitions. 

2. Transversus abdominis bracing

How to do it: 

1. Lie on your back with your knees bent and feet resting on the floor. 
2. Rest your fingers on your stomach, just above your hip bones.
3. Tighten your abs, pulling your navel up and in toward your spine. You should feel your muscles contract under your fingers.
4. Hold this position for 5 seconds, then relax and repeat. Do two sets of 10. 

3. Bent knee fallouts

How to do it: 

1. Lie on your back with your knees bent and feet on the floor.
2. Engage your abs and slowly lower one knee to the side, toward the ground.
3. Return to the starting position and repeat with the other leg. Do three sets of 10.

4. Side plank on knees

How to do it: 

1. Lie on your side, propped up on your forearm, with your elbow directly under your shoulder, and knees bent.
2. Engage your abs and raise your hips up into a side plank position, keeping your knees on the ground.
3. Hold for 15-30 seconds, return to the starting position, and repeat. Complete one set of four reps on each side

5. Plank with hands on table

How to do it: 

1. Stand facing a table, with your hands resting on the table.
2. Lean onto the table with both hands, keeping your arms straight.
3. Walk your feet backward into a plank position.
4. Hold for 15-30 seconds. Repeat four times. 

As you become comfortable with this exercise, progress to a plank on something lower, like a bed or chair, and then a regular plank on the floor, which is more challenging for your core.

6. Squat with counter support

How to do it: 

1. Stand facing a countertop, with your feet shoulder-width apart and your hands on the counter.
2. Squat down, slowly bending your knees to roughly a 90-degree angle.
3. Press into your feet to return to standing, and repeat. Do three sets of 10. 

More exercises to relieve lower back pain

The exercises above introduce gentle movement, which can slowly loosen back muscles. Once a patient gets comfortable with them, Malone incorporates more advanced exercises. 

"In general, spine surgeons recommend exercise categories that are done slowly and carefully," such as yoga and Pilates, which have low injury rates, Gjolaj says. 

Walking can also help relieve low back pain, says Malone, as it introduces gentle movement and increases blood flow.  

When you are walking or standing, your spine is better aligned than it is while you're sitting, Gjolaj says. This relieves pressure on spinal discs, which can reduce pain. 

If walking is not comfortable, you might try a stationary bike, a seated step machine, or walking in the pool, Malone says. These all place less stress and pressure on the spine. 

Insider's takeaway 

Lower back pain is not only painful but can impede on your quality of life. Therefore, it's important to work with a physician or physical therapist to find a solution for you. 

The above exercises can be a good starting point to help relieve back pain. After you get accustomed to them, you can incorporate more advanced movements into your routine like Pilates or yoga.

"Movement truly is medicine," Malone says.