Direct answer: The limitations section of a physiotherapy thesis in Malaysia should state, specifically, what your design could not control: sample size and single-site recruitment, the outcome measures you relied on (self-report scales, non-blinded assessors), follow-up length, and how far your findings generalise beyond the clinic or hospital you studied. Pair every limitation with a delimitation you chose deliberately, and a recommendation for the next study.
Physiotherapy FYPs, undergraduate research projects and masters dissertations at Malaysian faculties share one weak spot at Chapter 5: a limitations paragraph that says the sample was small and the study was cross-sectional, then stops. Examiners read that as a list of excuses rather than a scientific judgement about what the findings can and cannot support. This article works through what belongs in the section chapter by chapter, using the study designs Malaysian physiotherapy theses actually run — randomised and quasi-experimental trials, single-subject and case-series designs, cross-sectional surveys, and correlational studies, the same designs covered in our methodology chapter guide — and closes with a bank of ready sentences you can adapt.
Why do physiotherapy examiners scrutinise this section so closely?
Because physiotherapy sits between clinical practice and research, and examiners — often practising physiotherapists registered with the Malaysian Allied Health Professions Council (MAHPC) under the Allied Health Professions Act 2016 (Act 774) — read the limitations section as a test of clinical judgement, not just methodological awareness. Physiotherapist registration under Act 774 began in April 2022, and the same clinical-reasoning standard that governs practice carries into how examiners read a thesis: can you say precisely what your evidence supports, and what it does not? A vague limitations paragraph signals the same imprecision an examiner would flag in a clinical case write-up. A precise one, naming the exact threat to validity and its likely direction of bias, signals a candidate who understands the evidence they produced.
What sampling and design limitations should I state?
Start with recruitment. Most undergraduate and masters physiotherapy studies in Malaysia recruit from a single hospital, university physiotherapy clinic, or a convenience sample of patients attending during the data-collection window — state this plainly, and name the likely bias: patients who attend a teaching hospital or a specific private clinic may differ systematically in severity, socioeconomic background, or health-seeking behaviour from the wider population your title implies. If your sample size fell short of an a-priori calculation (common when clinical recruitment runs behind schedule), report the calculated target, the number achieved, and the effect on statistical power — this is a limitation examiners expect stated as a number, not a feeling; our guide to how many respondents you need for an FYP covers how to run that calculation in the first place.
For randomised and quasi-experimental designs, state whether allocation was concealed and whether assessors were blinded to group. Many undergraduate trials cannot blind the treating therapist to the intervention being delivered; say so, and note that outcome-assessor blinding, where achieved, protects the primary outcome even when therapist blinding is impossible. For single-subject and case-series designs, state the number of cases and that findings describe those cases only, not a population — this is a delimitation you chose (depth over generalisability), not a weakness to apologise for.
What outcome-measurement limitations are specific to physiotherapy?
Physiotherapy theses lean heavily on patient-reported outcome measures — pain visual analogue scales, the Oswestry Disability Index, the DASH, the Berg Balance Scale, condition-specific quality-of-life questionnaires — and each carries a limitation worth naming. Self-report measures are subject to recall bias and social-desirability bias, particularly when the same therapist who delivered treatment also administers the follow-up questionnaire; state whether that dual role applied in your study. Where you used a Malay-translated version of an instrument, state whether it has been formally validated for the Malaysian population or only translated for the purposes of your study — our guide to validated Malay-language scales explains what validation actually requires and how to describe an unvalidated translation honestly rather than presenting it as equivalent to the original.
Performance-based measures (gait speed, the Timed Up and Go test, goniometry) reduce self-report bias but introduce rater reliability as a limitation: state whether inter-rater reliability was tested, and if a single assessor collected all measurements, note that inter-rater variability could not be estimated. Short follow-up — common when data collection is compressed into one semester — means findings speak to immediate or short-term effect only; say explicitly that longer-term outcome, relapse or maintenance of gains was not measured.
How do delimitations differ from limitations in a physiotherapy thesis?
A limitation is a constraint you did not choose: the sample size your recruitment window allowed, the assessor blinding your staffing did not permit. A delimitation is a boundary you set deliberately, to keep the study feasible: choosing one condition (say, mechanical low back pain) rather than all musculoskeletal presentations, choosing adults aged 18–60 rather than the full adult range, or choosing one outcome domain (pain and function) rather than every domain a condition affects. State delimitations in the affirmative — “this study was delimited to adults with sub-acute mechanical low back pain attending [setting], to allow depth of assessment within one semester” — rather than apologising for them. Examiners distinguish a candidate who chose a scope from one who ran out of time; the delimitation paragraph is where you make that distinction visible.
What generalisability limits apply, and how should I state them?
Name the population your findings do and do not generalise to. A study run at one Klang Valley teaching hospital does not generalise to rural primary-care physiotherapy, private practice, or other Malaysian states without further evidence — say this directly rather than leaving readers to infer it. If your sample skewed toward one sex, age band or condition severity because of who happened to attend during recruitment, state the skew and its likely effect on the direction of your findings. Where your study measured association rather than causation (a correlational design linking, say, pain catastrophising scores with disability scores), state plainly that the design cannot establish which variable drives the other, and resist any temptation in the discussion chapter to use causal language your design does not support.
What recommendations should follow from each limitation?
Pair every limitation with a specific, feasible recommendation, not a generic call for “further research.” A single-site convenience sample suggests a multi-centre replication across Klang Valley and East Malaysian hospitals to test whether the effect holds across settings. Non-blinded therapist delivery suggests a future trial powered for a blinded outcome assessor even where therapist blinding remains impossible. A short follow-up window suggests a specific extension — three or six months — rather than an unspecified “longer follow-up.” An unvalidated Malay translation suggests formal psychometric validation as a standalone study, which is itself a common and publishable Malaysian physiotherapy FYP topic. Specific recommendations read as evidence of clinical reasoning; generic ones read as a section written to satisfy a template.
What do ready-to-adapt limitation sentences look like?
Below are worked examples for the designs Malaysian physiotherapy theses run most often. Adapt the numbers and setting to your own data; do not copy the wording without checking it matches what actually happened in your study.
- Convenience sample, single site: “Participants were recruited by convenience sampling from patients attending the physiotherapy outpatient clinic at [hospital] between [month] and [month] 2026; findings may not generalise to patients treated in primary-care or private-practice settings, where case severity and health-seeking patterns commonly differ.”
- Under-powered sample: “An a-priori power calculation indicated a target of [n] participants to detect a moderate effect at 80% power; recruitment achieved [n], reducing the study’s power to detect smaller but still clinically meaningful differences between groups.”
- Unblinded therapist delivery: “The treating physiotherapist could not be blinded to group allocation, as is typical of manual-therapy and exercise-based interventions; the primary outcome was assessed by a therapist independent of treatment delivery to reduce this risk.”
- Self-report outcome measure: “The primary outcome was measured using a self-report disability index, which is subject to recall and social-desirability bias; this risk was judged acceptable given the index’s established validity in comparable clinical populations.”
- Short follow-up: “Outcomes were assessed immediately post-intervention and at [X] weeks only; the study cannot speak to maintenance of gains beyond this window, and a [X]-month follow-up is recommended for future replication.”
- Single-subject or case-series design: “This study was delimited to [n] cases presenting with [condition] at [setting]; findings describe the response of these cases in depth and are not intended to generalise to the wider [condition] population.”
Notice the pattern in each: name the mechanism, state the population or measure it affects, and where relevant, state what was done to mitigate it. That third clause is what separates a limitation an examiner accepts from one they flag as unaddressed. For the discussion chapter that surrounds this section, our guide to writing the discussion chapter of an allied-health thesis covers how limitations connect to the interpretation of your findings, and our viva preparation guide covers how examiners typically probe this section out loud.
Get the limitations and delimitations drafted while the design is still fresh
The limitations section is easiest to write honestly in the week you finish data collection, while you still remember exactly which assessor was blinded and which was not — and hardest to write from memory three months later at the writing-up stage. Tesify helps you draft it while the detail is fresh: describe your design, your sample, your instruments and your follow-up period, and it returns a limitations-and-delimitations structure in the register Malaysian physiotherapy examiners expect, ready for you to check against what actually happened in your data collection.
Draft your physiotherapy thesis limitations section with Tesify
Frequently asked questions
Where does the limitations section go in a physiotherapy thesis?
Usually near the end of Chapter 5 (discussion and conclusion), after the interpretation of findings and before the recommendations. Some faculty handbooks separate delimitations into Chapter 1 alongside the scope of the study; check yours before you draft.
How long should the limitations section be?
Two to four paragraphs for an FYP or masters dissertation is typical: one on design and sampling, one on measurement, and one on generalisability, each closing with its recommendation. Length should come from precision about each threat, not from a long apologetic list.
Should I list limitations I already addressed in the methodology?
State them again briefly, because Chapter 5 is read on its own by many examiners preparing viva questions. A limitation mentioned only in Chapter 3 and never revisited in Chapter 5 reads as forgotten rather than managed.
Is a small sample size always a limitation worth stating?
State it if it fell below your calculated target or limits the statistical tests you could run. If your design was always intended as a small case series, frame the sample size as a delimitation rather than a limitation.
Can I turn a limitation into a strength?
Only if it is genuinely one. A single-site design is not a strength dressed up as a limitation, but a homogeneous, well-characterised sample sometimes is — state which is true of your study rather than reframing a real weakness.
Do qualitative physiotherapy studies need this section too?
Yes, though the content differs: transferability rather than generalisability, reflexivity about the researcher’s own clinical role, and the depth-versus-breadth trade-off of a small interview or focus-group sample.
What do examiners ask about this section at the viva?
Most often, which single limitation most threatens the main finding, and what one change to the design would have addressed it. Prepare a one-sentence answer for your primary outcome specifically, not the whole list.
Should recommendations for future research go here or in a separate section?
Many Malaysian faculty templates pair each limitation with its recommendation in the same paragraph; others require a standalone recommendations section. Follow your faculty handbook, and if it is silent, pairing them is the safer default because it shows the reasoning explicitly.
How do I state a limitation about assessor blinding honestly without sounding like the study is invalid?
Name the specific outcome it affects and its likely direction: unblinded assessment of a self-report pain scale risks an overestimate of treatment effect, not an unknown-direction error. Precision, not alarm, is what examiners want to read.
Is it acceptable to have more limitations than delimitations, or the reverse?
There is no fixed ratio. A tightly scoped case series may list several delimitations and few limitations; a large survey with recruitment problems may show the reverse. What matters is that each one is specific to your actual study.