If you are choosing IB SEHS EE topics this fall, consider wearable accuracy, movement biomechanics, recovery, sleep, environmental conditions, warm-ups, or motor learning. These areas connect directly to Sports, Exercise and Health Science and can often be investigated through safe experiments, published studies, or existing datasets.
The strongest topic is not necessarily the most unusual. It is one that supports a focused question, appropriate scientific methods, sufficient evidence, and meaningful evaluation within the Extended Essay's 4,000-word limit. Treat the ideas below as starting points to adapt with your supervisor, not questions to copy unchanged.
What makes a strong SEHS Extended Essay topic?
The current SEHS course is organized around exercise physiology and nutrition, biomechanics, and sports psychology and motor learning. The official IB SEHS subject brief also emphasizes scientific inquiry, data analysis, evaluation, and ethical investigation.
A suitable SEHS essay should apply sports science concepts to evidence about health, movement, exercise, or performance. A promising topic normally includes:
- A defined independent variable, predictor, or comparison
- A measurable outcome such as heart rate, jump height, accuracy, or perceived exertion
- A specific population, activity, dataset, or environmental context
- A safe, ethical, affordable, and repeatable method
- Relevant scientific literature for interpreting the findings
- Enough uncertainty to support analysis and evaluation
For students assessed from May 2027, the revised EE model evaluates the research framework, subject knowledge, analysis and line of argument, discussion and evaluation, and reflection. The official IB Extended Essay update explains this model.
IB SEHS EE topics worth scoping
| Research angle | Possible working research question | Feasible evidence and caution |
|---|---|---|
| Wearable validity | To what extent does exercise intensity affect agreement between wrist and chest-strap heart-rate monitors? | Use safe submaximal trials and agreement analysis, not correlation alone. |
| Running biomechanics | How does speed affect knee flexion at initial contact in a selected open dataset? | Understand how the motion-capture variables were produced before analysis. |
| Recovery intervals | How does recovery duration affect performance decline across repeated submaximal cycling efforts? | Standardize resistance, effort duration, prior activity, and participant training level. |
| Warm-up design | How do dynamic and static warm-ups affect countermovement jump height? | Control warm-up duration, order, rest, footwear, and measurement technique. |
| Attentional focus | How does internal versus external feedback affect basketball free-throw acquisition? | Distinguish immediate performance from learning measured in a later retention test. |
| Sleep regularity | Is sleep regularity associated with reaction time among adolescent athletes over four weeks? | Observe normal sleep and protect privacy; never deliberately restrict sleep. |
| Weather and endurance | To what extent do temperature and humidity predict finishing times in one road race from 2015-2025? | Consider course changes, wind, participation, and variation in athlete quality. |
| Cooling strategies | How effectively do practical precooling methods reduce perceived exertion in hot conditions? | A structured review is safer than exposing participants to dangerous heat. |
| Menstrual-cycle evidence | Do methodological differences explain conflicting findings about cycle phase and endurance performance? | Compare phase definitions, hormonal verification, samples, and confounding variables. |
| Equipment and technique | How does permitted football inflation pressure affect velocity after a standardized kick? | Use video analysis and a repeatable kicking or mechanical-launch protocol. |
Adapt any question to your facilities, skills, and available evidence. SEHS EE examples can clarify appropriate structure and scope, but another student's question, analysis, or method must not be reproduced.
Why these areas support effective research
Wearables generate convenient data, but device outputs are not automatically valid. Accuracy may depend on intensity, movement, placement, and the reference measure. A worthwhile essay therefore asks when measurement error becomes important, rather than merely whether two devices correlate.
Heat provides another relevant research area. The IOC consensus statement on sport in the heat discusses acclimation, hydration, cooling, scheduling, and medical preparation. Secondary analysis of weather and race results is generally safer than making students exercise in severe heat.
Sleep connects physiology, psychology, and performance. A systematic review of sleep interventions found promising evidence for sleep extension and napping but also substantial methodological variation. Appropriate student projects can observe normal sleep patterns or compare published effects on reaction time, accuracy, endurance, or recovery.
Female-athlete research is scientifically important but methodologically difficult. Inconsistent phase definitions, small samples, and weak measurement procedures can produce conflicting conclusions. Evaluating the quality of evidence is often more defensible than collecting sensitive health information or claiming that one cycle phase universally changes performance.
Secondary data can also make biomechanics research possible without laboratory equipment. The SPL Open Data repository provides anonymized sports movement datasets. Before committing, open a sample file and confirm that you understand its variables, processing, units, and limitations.
Turning an idea into a focused research question
A focused question identifies what changes, what is measured, and under what conditions:
- Too broad: How does sleep affect sports performance?
- Better: Is sleep duration related to reaction time in athletes?
- Focused: To what extent is mean nightly sleep duration associated with median visual reaction time among school-level basketball players during a four-week observation period?
The final version specifies a predictor, outcome, population, and timeframe. It still requires decisions about measurement reliability and confounding variables. The RevisionDojo research-question guide can help you test alternative wording, while Jojo AI can suggest narrower versions for supervisor review.
A practical fall scoping plan
Treat September-November as a feasibility phase rather than rushing into formal data collection.
- Choose two candidate areas. Keep one preferred topic and one realistic backup.
- Run a source test. Find 8-12 credible sources, including recent reviews and primary studies.
- Test access. Inspect the dataset, borrow the equipment, or run a harmless technical pilot.
- Define the variables. Record measurements, units, uncertainty, controls, and likely confounders.
- Check ethics and safety. Secure approval before recruiting people or collecting personal data.
- Compare two questions. Judge each for scientific depth, feasibility, and scope.
- Consult your supervisor. Bring preliminary sources, methods, and expected limitations.
Human-participant research may require informed consent, confidentiality, the right to withdraw, and additional permission for minors. Follow school procedures and consult the RevisionDojo EE and IA ethics guide before collecting data.
Common topic-selection mistakes
Avoid questions that sound advanced but require inaccessible equipment or expertise. Blood lactate, maximal oxygen uptake, hormones, supplements, injury risk, deliberate dehydration, or maximal exertion may be unsafe or impractical.
Other frequent mistakes include treating correlation as causation, generalizing from one participant, failing to standardize interventions, trusting wearable data without validation, and producing a descriptive literature review without evaluating evidence. The IA and EE must also remain separate pieces of work rather than reusing the same question and dataset.
The RevisionDojo SEHS EE guide can help align the question, method, analysis, and evaluation. After drafting, the SEHS EE Grader can highlight areas to review, but it should not replace your judgment or supervisor's guidance.
Conclusion
The most workable IB SEHS EE topics combine scientific relevance with realistic evidence, safe methods, and clear analytical potential. Test the literature, data access, equipment, ethics, and scope before finalizing your question. RevisionDojo's SEHS examples, EE guide, Jojo AI, and feedback tools can support this planning and revision process.
Sources and referenced URLs
- Official IB SEHS subject brief
- Official IB Extended Essay overview
- Official IB Extended Essay curriculum update
- IOC consensus statement on sport in the heat
- Wearable heart-rate validation recommendations
- Systematic review of sleep interventions
- UEFA consensus statement on menstrual-cycle tracking
- SPL Open Data biomechanics repository
- RevisionDojo Extended Essay guides
- RevisionDojo SEHS EE guide
- RevisionDojo SEHS EE examples
- RevisionDojo EE research-question guide
- RevisionDojo research ethics guide
- RevisionDojo SEHS EE Grader