A 3-ball incentive spirometer measures how deeply and steadily you inhale by lifting three lightweight balls inside separate chambers. Each ball rises when you breathe in through the mouthpiece with enough force and control. The goal isn’t to slam all three balls to the top as fast as possible. It’s to raise them slowly and keep them elevated for as long as you can, which encourages your lungs to fully expand.
What the Three Balls Actually Tell You
Unlike a single-piston spirometer that shows your inhaled volume on a numbered scale, the 3-ball design gives you visual feedback on your airflow rate. Each ball is slightly heavier than the last, so the first ball rises with a gentle breath, the second requires more sustained effort, and the third only lifts when you’re inhaling deeply and steadily. Think of them as easy, moderate, and strong levels of inhalation.
There’s also a smaller indicator (sometimes a separate floating marker on the side) that tells you whether your breathing speed is correct. Your goal is to keep the balls floating in the middle of their chambers, not bouncing off the top. If a ball shoots up and hits the ceiling of its chamber, you’re breathing in too fast. If it barely lifts, you’re not inhaling deeply enough.
Step-by-Step Instructions
Sit upright before you start. Sitting on the edge of your bed is ideal. If that’s not possible, raise the head of your bed as far as it goes. Lying flat compresses your lungs and makes it harder to take a full breath, which defeats the purpose of the exercise.
Hold the spirometer upright in front of you. Tilting it to the side changes how easily the balls rise and gives you inaccurate feedback. Then follow this sequence:
- Exhale normally. Before putting the mouthpiece in, breathe out at your regular pace so your lungs are ready for a full inhalation.
- Seal your lips around the mouthpiece. The seal needs to be tight. Any air leaking around the edges means less airflow reaches the chambers, and the balls won’t reflect your actual effort.
- Inhale slowly and deeply through your mouth. This is the most important part. Draw air in as slowly as you can while still lifting the balls. A slow, sustained breath opens more of your lung tissue than a quick gasp.
- Watch the balls. Try to raise all three and keep them floating in the middle of their chambers. If they spike to the top, slow down your inhalation.
- Hold your breath for 3 to 5 seconds (longer if you can manage it). This pause at full inflation gives your smallest airways time to open fully.
- Remove the mouthpiece and exhale slowly. Let the balls fall back to the bottom on their own. Don’t blow into the device.
Rest for a few normal breaths between repetitions. This prevents lightheadedness from breathing too deeply too many times in a row. Aim for about 10 breaths per session, and try to do a session every 1 to 2 hours while you’re awake, especially in the first few days after surgery.
The Most Common Mistake
The single biggest error people make is exhaling into the spirometer. The device only works correctly when you breathe in through your mouth. Blowing out into the mouthpiece won’t lift the balls in a meaningful way, and it skips the deep inhalation your lungs actually need. The exhale phase always happens with the mouthpiece removed from your mouth, or at least with your lips relaxed and open.
The second most common mistake is inhaling too quickly. It’s natural to try to suck in air as hard as you can to get all three balls up, but speed works against you here. A fast breath mostly fills the large upper airways while the smaller, deeper sections of your lungs stay collapsed. Slow, steady inhalation is what forces air into those deeper areas. If you can only raise two balls at a slow pace, that’s better than raising all three with a rapid gasp.
Why You’re Asked to Use It
After surgery, especially procedures involving the chest or abdomen, most people take shallow breaths because deeper breathing hurts. Pain medications can also suppress your natural urge to sigh or yawn, which are your body’s built-in ways of keeping lung tissue expanded. When parts of the lungs stay deflated for too long, mucus pools in those areas and creates a breeding ground for infection.
The spirometer essentially replaces those deep breaths your body would normally take on its own. Each slow inhalation stretches open the tiny air sacs at the ends of your airways, helps clear mucus, and improves oxygen exchange. It’s a simple tool, but it addresses a real risk: post-surgical pneumonia is one of the more common complications after major operations, and shallow breathing is a major contributor.
Setting a Realistic Goal
Don’t expect to raise all three balls on your first attempt, particularly right after surgery. Your healthcare team may set a target for you based on your age, height, and lung capacity before the procedure. If no one gave you a specific target, focus on gradually increasing how many balls you can lift at a slow, controlled pace and how long you can hold your breath at the top of each inhalation.
Track your progress over days rather than hours. It’s normal for your first sessions to feel difficult and produce modest results. As your lungs recover and pain decreases, you should notice the balls rising more easily and staying elevated longer. If you’re consistently unable to raise even the first ball after several days of practice, that’s worth mentioning to your care team.
Avoiding Dizziness
Lightheadedness is the most common side effect, and it almost always happens because you’re doing too many deep breaths in a row without resting. Take two or three normal breaths between each spirometer breath. If you feel dizzy, stop the session, breathe normally for a few minutes, and try again. The goal is 10 deep breaths per session, not 10 consecutive deep breaths.
If you’re recovering from surgery and deep breathing triggers pain at the incision site, try holding a pillow firmly against your chest or abdomen as you inhale. This splinting technique supports the surgical area and makes the breathing less uncomfortable. Pain that prevents you from using the spirometer at all is something to address with your care team, since avoiding the exercises altogether raises your risk of complications more than working through mild discomfort.
Keeping the Device Clean
Since the mouthpiece sits directly against your lips multiple times a day, basic hygiene matters. Wipe the mouthpiece with a clean cloth or rinse it with warm water daily. Don’t submerge the entire unit, because water inside the chambers will affect how the balls move. Store it upright in a clean, dry spot between sessions. These devices are typically designed for single-patient use and aren’t meant to be shared.