A gender-sensitised weight loss and healthy living programme for overweight and obese men delivered by Scottish Premier League football clubs (FFIT): a pragmatic randomised controlled trial

The researchers tested a programme called "Football Fans in Training" (FFIT) — a 12-week, group-based weight loss and healthy living programme delivered at Scottish Premier League football clubs. The programme was "gender-sensitised," meaning it was designed specifically to appeal to men by:

**Context:** Held in the traditionally male environment of football stadiums, in men-only groups.

**Content:** Included information on the science of weight loss presented simply, discussion of alcohol's role in weight management, and club-branded materials (e.g., club crests on t-shirts and handbooks).

**Style:** Used participative, peer-supported learning that encouraged "male banter" to help discuss sensitive topics like body image and health.

The programme consisted of 12 weekly sessions, each 90 minutes long, combining dietary advice with physical activity. Groups of up to 30 men were led by community coaching staff employed by the clubs (a 15:1 participant-to-coach ratio). Coaches received 2 days of training from the research team.

**Comparator:** The comparison group was placed on a 12-month waiting list. They received a British Heart Foundation booklet on weight management at baseline and were told they could participate in the FFIT programme after the 12-month trial period ended.

**Primary outcome:** Mean difference in weight loss between groups at 12 months, expressed as both absolute weight (kg) and percentage of baseline body weight.

**Secondary outcomes included:** Waist circumference, body fat percentage, blood pressure, physical activity (measured by the International Physical Activity Questionnaire, IPAQ), self-reported diet (fruit/vegetable intake, fat intake), self-reported alcohol consumption, and quality of life (EQ-5D-3L).

**Sample size:** 747 men (374 intervention, 374 comparison; one man was randomised but withdrew before baseline, leaving 374 vs 373 for analysis).

**Age:** 35–65 years old.

**BMI:** All had a body-mass index of 28 kg/m² or higher (overweight to obese range). Mean baseline BMI was approximately 31.5 kg/m².

**Setting:** 13 Scottish professional football clubs (12 clubs in the Premier League in 2011–12, plus one club relegated the previous season).

**Recruitment:** Men self-referred in response to club-based advertising (websites, in-stadium ads, match-day recruitment), media coverage (local/national newspapers, BBC Scotland, radio), and word-of-mouth. They contacted the research team to register interest.

**Exclusions:** Men whose blood pressure contraindicated vigorous exercise (systolic ≥160 mmHg or diastolic ≥100 mmHg) were excluded from intense physical activity during sessions until they could show reduced blood pressure. Men who had previously participated in FFIT were excluded.

**Completion rate:** 89% of the intervention group (333 men) and 95% of the comparison group (355 men) completed 12-month assessments.

**Weight:** Measured by trained fieldworkers using calibrated scales, taken as the first measure in a screened-off area to prevent interaction with others. This was the primary outcome.

**Waist circumference:** Measured at the midpoint between the lowest rib and the iliac crest.

**Body fat percentage:** Measured using bioelectrical impedance scales (Tanita).

**Blood pressure:** Measured using an automated monitor (Omron).

**Physical activity:** Self-reported using the International Physical Activity Questionnaire (IPAQ), which asks about minutes of walking, moderate, and vigorous activity per week.

**Diet:** Self-reported using a short food frequency questionnaire assessing fruit/vegetable intake (portions per day) and fat intake (a validated fat intake score).

**Alcohol consumption:** Self-reported using the AUDIT-C (Alcohol Use Disorders Identification Test – Consumption), a 3-item screening tool for hazardous drinking.

**Quality of life:** Measured using the EQ-5D-3L, a standardised instrument for measuring health-related quality of life.

**Adverse events:** Collected through self-report and medical record review.

**Study design:** Two-group, pragmatic, randomised controlled trial (RCT).

**Randomisation:** After baseline measurements, participants were randomly assigned in a 1:1 ratio using a computer-generated sequence (SAS version 9.2) with block randomisation (block sizes 2–9, varying by club) and stratification by club. The allocation sequence was generated by a statistician at the Tayside Clinical Trials Unit who had no day-to-day role in the study. A database manager (not part of the research team) assigned individuals to groups.

**Blinding:** The primary outcome (weight at 12 months) was assessed by fieldworkers who were masked to group allocation. These fieldworkers were employed only for the 12-month measurements and were trained to minimise interaction with participants until weight was recorded. However, blinding for other measures (waist circumference, body fat, blood pressure, questionnaires) was not possible because participants knew their group assignment. The researchers note this as a limitation.

**Duration:** The intervention lasted 12 weeks (weekly 90-minute sessions). The primary endpoint was measured at 12 months from baseline. The comparison group was on a 12-month waiting list.

**Statistical approach:** Primary analysis was by intention-to-treat (ITT), meaning all participants were analysed in the group they were randomised to, regardless of whether they completed the programme. Missing data were handled using multiple imputation. The primary outcome was analysed using linear regression adjusted for baseline weight and club (the stratification factor). Results are reported as mean differences with 95% confidence intervals and p-values.

**What this design can and cannot prove:**

**Can prove:** Because this is an RCT with random allocation, it can establish causality — the weight loss difference between groups is attributable to the FFIT programme, not to pre-existing differences between participants. The pragmatic design (real-world setting, real coaches, real clubs) means the results are likely to generalise to similar programmes delivered in similar settings.

**Cannot prove:** The design cannot tell us which specific component of the programme caused the effect (the football setting, the group support, the dietary advice, the physical activity, the gender-sensitised content, or the combination). It also cannot tell us whether the programme would work in other settings (e.g., non-football contexts, with women, in different countries). The lack of blinding for secondary outcomes means those results are more susceptible to bias. The waiting-list comparison means the comparison group knew they were on a list, which could have affected their behaviour (though this would likely reduce the apparent effect, not inflate it).

**Major methodological strengths:** High retention (89% intervention, 95% comparison), objective primary outcome (weight measured by fieldworkers, not self-reported), masked assessment of primary outcome, intention-to-treat analysis, pragmatic design with real-world delivery.

**Major methodological weaknesses:** No blinding of participants or coaches (impossible for this type of intervention), self-reported secondary outcomes (diet, physical activity, alcohol), waiting-list comparison group (not a true placebo or attention control), relatively short follow-up (12 months — we don't know if effects persist beyond that).

**Primary outcome (weight loss at 12 months):**

Mean weight loss in the intervention group: 5.56 kg (95% CI 4.72–6.40)

Mean weight loss in the comparison group: 0.62 kg (95% CI 0.12–1.12)

**Mean difference between groups:** 4.94 kg (95% CI 3.95–5.94, p<0.0001), adjusted for baseline weight and club

**Percentage weight loss difference:** 4.36% (95% CI 3.64–5.08, p<0.0001), favouring the intervention

**Secondary outcomes (all favouring intervention, p<0.0001 unless noted):**

**Waist circumference:** Mean difference −4.37 cm (95% CI −5.38 to −3.36)

**Body fat percentage:** Mean difference −1.63% (95% CI −2.05 to −1.21)

**Systolic blood pressure:** Mean difference −3.8 mmHg (95% CI −5.6 to −2.0)

**Diastolic blood pressure:** Mean difference −2.7 mmHg (95% CI −3.9 to −1.5)

**Physical activity (IPAQ):** Intervention group increased by 130 minutes/week more than comparison (p<0.0001)

**Fruit and vegetable intake:** Intervention group increased by 0.8 portions/day more than comparison (p<0.0001)

**Fat intake score:** Intervention group reduced by 2.4 points more than comparison (p<0.0001)

**Alcohol consumption (AUDIT-C):** No significant difference between groups (p=0.14)

**Quality of life (EQ-5D-3L):** Small but statistically significant improvement in the intervention group (mean difference 0.03, p=0.02)

**Adverse events:**

Eight serious adverse events reported: five in the intervention group (loss of consciousness due to drugs for pre-existing angina, gallbladder removal, hospital admission with suspected heart attack, ruptured gut, ruptured Achilles tendon) and three in the comparison group (transient ischaemic attack, two deaths).

Two adverse events were reported as related to participation in the programme: gallbladder removal and ruptured Achilles tendon.

**Subgroup analyses:** The effect was consistent across age groups, baseline BMI categories, and clubs. Men who attended more sessions lost more weight (per-session attendance was associated with ~0.3 kg additional weight loss per session attended).

The average man in the FFIT programme lost about 5 kg more than the average man who only received a booklet. To put this in perspective:

**5 kg is roughly the weight of a large bag of potatoes or a small bowling ball.**

**4.36% weight loss** is clinically meaningful — the NHS and NICE consider 5% weight loss over 12 months as the threshold for clinically significant health benefits. The FFIT group nearly reached this threshold on average, and many individual men exceeded it.

**Waist circumference reduction of 4.37 cm** is roughly the width of two fingers — enough to move down one or two trouser sizes.

**Blood pressure reduction of 3.8 mmHg systolic** is modest but meaningful at a population level — equivalent to what you might see from reducing salt intake by about 1–2 grams per day.

**Physical activity increase of 130 minutes/week** is roughly 20 minutes per day of additional activity — equivalent to adding a brisk 20-minute walk to your daily routine.

The effect is comparable to or better than many commercial weight loss programmes. For context, a 2011 meta-analysis of commercial weight loss programmes found average weight losses of 2–5 kg at 12 months for programmes like Weight Watchers.

**What the authors acknowledge:**

No blinding of participants or coaches (impossible for this type of intervention).

Self-reported secondary outcomes (diet, physical activity, alcohol) are subject to recall bias and social desirability bias.

The waiting-list comparison group may have been less motivated than the intervention group (though this would likely reduce the apparent effect).

The programme was delivered by trained community coaches, not researchers — fidelity may have varied across clubs.

The study was conducted in Scotland with Scottish football clubs — generalisability to other countries, sports, or settings is unknown.

**What a critical reader would note:**

**No attention control:** The comparison group received only a booklet, while the intervention group received 12 weeks of group sessions with coaches. The effect could be partly due to the attention, social support, and accountability of attending sessions, not the specific content of the programme.

**Self-selection bias:** Men who volunteered for this study were already motivated to lose weight and interested in football. The results may not apply to men who are less motivated or not football fans.

**Short follow-up:** 12 months is good, but we don't know if weight loss is maintained at 2, 3, or 5 years.

**No dietary or physical activity objective measures:** Diet and activity were self-reported, which is notoriously unreliable. People tend to overreport healthy behaviours and underreport unhealthy ones.

**Alcohol finding is null:** The programme included discussion of alcohol, but it didn't change drinking behaviour. This is a missed opportunity, as alcohol is a significant source of calories for many men.

**Industry funding:** The programme delivery was funded by the Scottish Government and The UK Football Pools (a lottery). The assessment was funded by the National Institute for Health Research. While this is public and charitable funding, not industry, the involvement of a gambling-related organisation (Football Pools) is worth noting.

**Exclusion of men with high blood pressure:** Men with systolic ≥160 or diastolic ≥100 were excluded from intense physical activity. This limits generalisability to men with uncontrolled hypertension, who are a high-risk group.

For someone running their own n=1 experiment:

**What to test:**

A 12-week structured weight loss programme that combines:

- Weekly group sessions (90 minutes each) with a coach or facilitator

- Dietary education (calorie awareness, portion control, reducing fat and sugar)

- Physical activity guidance (gradually increasing to 30+ minutes of moderate activity most days)

- A "gender-sensitised" or personally relevant context (e.g., a sports club, a hobby group, a workplace team)

- Peer support and accountability (group banter, shared goals, friendly competition)

**Minimum meaningful duration:**

Run the programme for at least 12 weeks (the intervention length in this study).

Measure outcomes at the end of the programme and again at 12 months to see if effects are sustained.

A shorter programme (e.g., 4–6 weeks) may produce initial weight loss but is unlikely to produce sustained change.

**What to measure (specific metrics):**

**Primary:** Body weight (kg) — weigh yourself at the same time of day, on the same scale, wearing the same amount of clothing, ideally first thing in the morning after using the bathroom.

**Secondary:** Waist circumference (cm) — measure at the narrowest point between your lowest rib and your iliac crest (hip bone), after exhaling.

**Optional but useful:** Body fat percentage (if you have bioelectrical impedance scales), blood pressure (if you have a home monitor), physical activity (minutes per week of moderate-to-vigorous activity), fruit/vegetable intake (portions per day), alcohol consumption (units per week).

**Process measure:** Session attendance — track how many sessions you attend. In this study, each session attended was associated with ~0.3 kg additional weight loss.

**Key confounds to control for:**

**Seasonal effects:** Weight tends to increase over winter holidays and decrease in summer. If you start in January, some weight loss may be due to seasonal trends. Run your experiment for a full year or compare to a baseline period.

**Life events:** Job changes, relationship changes, illness, or travel can affect weight. Keep a log of major life events and note them in your data.

**Dietary changes outside the programme:** You might unconsciously change other eating habits. Keep a food diary for at least 3 days per week to track total calorie intake.

**Exercise outside the programme:** You might increase or decrease non-programme activity. Track all physical activity, not just programme sessions.

**Alcohol:** This study found no change in alcohol consumption, but alcohol is a major source of calories. If you drink, track your alcohol intake separately.

**Sleep and stress:** Both affect weight. Track sleep duration and subjective stress levels weekly.

**What a positive result would look