Having to dash to the loo halfway through a run or during a workout is a problem many people with Irritable Bowel Syndrome understand all too well. Digestive symptoms can quickly turn a good training session into a frustrating experience. Often, these unpleasant symptoms are caused by high FODMAP foods; however, with the right food choices, you can fuel your body for exercise without triggering gut discomfort.
We spoke with Chloe Valentine, a research dietitian from the Monash University FODMAP team, to explore how people with IBS can manage sports fuelling on the low FODMAP diet.
Why Sports Fuelling Is Important For People with IBS
Fuelling before and after exercise is essential for maintaining energy, supporting recovery, and achieving your training goals. Before exercise, you need carbohydrates to power your muscles. Afterward, your body requires both carbohydrates and protein to rebuild and repair.
The challenge for people with IBS is that traditional sports nutrition advice often recommends foods rich in simple carbohydrates like fruit, cereal, and sports drinks. Many of these foods are high in FODMAPs (a group of fermentable carbohydrates) that can cause bloating, pain, and changes in bowel habits.
This means that those with IBS often need to choose low FODMAP carbohydrate options that are easy to digest and won’t set off symptoms.
Low FODMAP Pre-Work Out Meal Ideas
Before a workout, the goal is to eat foods that provide quick energy and digest easily. Chloe recommends avoiding foods high in fat, protein, or fibre immediately before exercise since these take longer to digest.
Some IBS-friendly pre-workout snacks include:
- A firm banana or a handful of blueberries
- A few dried dates within a low FODMAP serve (you can have up to 5 dates)
- A fruit smoothie made with lactose-free milk (ideally low fat) and low FODMAP fruit
- Gluten-free toast or wheat/spelt-based sourdough bread with strawberry jam (check labels and avoid products with high fructose corn syrup). There is a recipe for low FODMAP strawberry jam in the Monash University FODMAP Diet App.
These light snacks give you the fast-releasing energy you need to perform well while keeping your gut calm. If you struggle to eat early in the morning, a smoothie can be a gentle and effective option.
Low FODMAP Post-Work Out Meal Ideas
After training, your body needs a mix of carbohydrates and protein for recovery. Many protein-rich foods are naturally low in FODMAPs, which makes building post-workout meals simple and flexible.
Try these low FODMAP post-workout meal ideas:
- Tinned tuna or chicken with rice cakes or gluten free crackers, topped with mayonnaise or avocado
- A chicken sandwich or salad made with lettuce, grated carrot, and green pepper/capsicum
- A lactose-free yoghurt with low FODMAP fruit like kiwifruit or a few strawberries
- Firm tofu for a vegetarian protein option
These meal ideas provide energy for recovery while being gentle on your digestive system.
Low FODMAP Sports Supplements and Protein Powders
Many sports nutrition supplements and protein powders contain high FODMAP ingredients like polyol sweeteners (mannitol, sorbitol, xylitol) or added fibres such as inulin (chicory root). These can easily trigger IBS symptoms.
To avoid this, Chloe recommends choosing Monash University FODMAP Certified products. These have been tested in the Monash University FODMAP lab to confirm their FODMAP content and that they are suitable for the first phase of the low FODMAP diet. You can find certified products in the Monash University FODMAP Diet app under the food guide section or by looking for the blue Monash University Low FODMAP logo on product packaging.
Final Thoughts
Balancing sports nutrition and IBS can take some trial and error, but it is possible. Start by experimenting with low FODMAP snacks and meals around your workouts to find what works best for your body.
For more guidance, explore the Monash University FODMAP Diet App and explore A Little Bit Yummy’s low FODMAP recipes designed to fuel your body and calm your gut.
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