Interactive GuideWellness monitoringFemale athletesMenstrual cycle

Menstrual Cycle Tracking for Female Athletes

Menstrual cycle tracking for female athletes, explained for coaches: what the science supports, what it doesn't, and how to set it up without overclaiming.

Why it matters

Why the menstrual cycle belongs in your monitoring

You already track load and wellness. Menstrual cycle tracking adds the missing piece for female athletes: a private, athlete-controlled signal that explains symptoms and flags health problems early.

Quick answer

Menstrual cycle tracking for female athletes means logging menstruation and symptoms so staff can read readiness with the full picture. The honest reason to do it is not phase-based training prescriptions. A 2020 meta-analysis of 78 studies found only a trivial performance difference across cycle phases. The value is spotting symptoms that affect availability and catching missing periods that signal a health problem, both of which are highly individual.

Most staff working with female athletes track load, sleep, and soreness, then read the menstrual cycle nowhere. That is a gap the athletes themselves notice. In a study of 1,086 female athletes across Sweden and Norway, only 11% had discussed female-health issues with their coach, 81% agreed the topic is treated as taboo, and 53% rated their coaches' knowledge of cycle issues as poor or very poor.

von Rosen P, Ekenros L, Solli GS, et al. "Offered Support and Knowledge about the Menstrual Cycle in the Athletic Community: A Cross-Sectional Study of 1086 Female Athletes." International Journal of Environmental Research and Public Health 2022;19(19):11932. DOI: 10.3390/ijerph191911932

11%

of female athletes had discussed female-health issues with their coach

von Rosen et al. 2022, 1,086 athletes across 57 sports.

81%

agreed menstrual health is treated as taboo in their sport

Same cohort. Silence is the default, not a decision.

53%

rated their coaches' knowledge of cycle issues as poor or very poor

A knowledge gap you can close with a shared, private record.

Symptoms are common and they move training. A survey of 6,812 exercising women recruited through the Strava app found that the most reported symptoms were mood changes or anxiety (90.6%), tiredness or fatigue (86.2%), and stomach cramps (84.2%). A higher symptom burden was linked to missing or changing training and missing events. This is the practical signal a coach can act on, and it is different for every athlete.

Bruinvels G, Goldsmith E, Blagrove R, et al. "Prevalence and frequency of menstrual cycle symptoms are associated with availability to train and compete: a study of 6812 exercising women recruited using the Strava exercise app." British Journal of Sports Medicine 2021;55(8):438-443. DOI: 10.1136/bjsports-2020-102792

The basics

The four phases, in plain language

You don't need a physiology degree to use this. You need a shared vocabulary and a healthy respect for how much it varies between athletes.

The menstrual cycle

A roughly monthly hormonal cycle, counted from the first day of one period to the first day of the next. A textbook cycle is about 28 days, but normal cycles range widely, and the timing of ovulation shifts from athlete to athlete and month to month.

Example: Two athletes can both have healthy cycles and still be in different phases on the same training day. Averages describe a group, not the player in front of you.

Phase	Roughly when	What athletes commonly report
Menstruation	Cycle days 1 to about 5, when bleeding occurs.	Some report cramps, fatigue, and broken sleep. Many report nothing unusual.
Follicular	From the end of the period up to ovulation.	Oestrogen rises. Some athletes say they feel good here, but this is individual, not a rule.
Ovulation	Around mid-cycle, when an egg is released.	Oestrogen peaks. The exact day is hard to pin down without a test.
Luteal	After ovulation until the next period starts.	Progesterone rises. Late in this phase some report higher perceived effort, heat sensitivity, and premenstrual symptoms.

The word that matters most is 'estimated'

Confirming which phase an athlete is truly in takes more than a calendar. Sport-science standards call for reporting the period, a urine test for the ovulation hormone surge, and a blood test for progesterone to confirm the luteal phase. Calendar or app-based tracking gives you an estimated phase, not a verified one. That is fine for coaching context, as long as you say so and read it that way.

Elliott-Sale KJ, Minahan CL, Janse de Jonge XAK, et al. "Methodological Considerations for Studies in Sport and Exercise Science with Women as Participants: A Working Guide for Standards of Practice for Research on Women." Sports Medicine 2021;51(5):843-861. DOI: 10.1007/s40279-021-01435-8

The evidence

What the science actually says about performance

This is where good intentions meet weak evidence. Read it before you build cycle phases into a training plan.

The largest review to date pooled 78 studies on cycle phase and exercise performance in women with natural cycles. It found that performance may be trivially reduced in the early follicular phase, the days around the start of the period, compared with other phases. The largest difference it detected was small, with an effect size of about -0.14, and the authors graded the overall quality of evidence as low. Their conclusion was blunt: because the effect is trivial and the studies vary so much, you cannot write general guidelines from it. A personalised approach, based on each athlete's own reported response, is what they recommend.

McNulty KL, Elliott-Sale KJ, Dolan E, et al. "The Effects of Menstrual Cycle Phase on Exercise Performance in Eumenorrheic Women: A Systematic Review and Meta-Analysis." Sports Medicine 2020;50(10):1813-1827. DOI: 10.1007/s40279-020-01319-3

What this means for your week

Do not sell athletes or directors on training blocks periodised to the cycle as if the science were settled. It isn't. What you can do is track how each athlete reports feeling and performing across her own cycle, and use that individual pattern, alongside her load and wellness, to inform conversations and small adjustments. The unit of analysis is the athlete, not the phase.

Health first

When a missing period is a health flag, not a training variable

The biggest payoff from cycle tracking is catching a health problem early, well before it costs an athlete a season.

If an athlete's periods become irregular or stop, that is a health signal, not something to train through. The 2023 International Olympic Committee consensus statement treats menstrual dysfunction such as absent periods as a possible sign of low energy availability and Relative Energy Deficiency in Sport, a syndrome with real consequences for health and performance. The consensus also notes that awareness of it is still low among athletes and support staff. If tracking shows a player missing periods, the right next step is a referral to a doctor or sports physician, not a change to her programme.

Mountjoy M, Ackerman KE, Bailey DM, et al. "2023 International Olympic Committee's (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs)." British Journal of Sports Medicine 2023;57(17):1073-1097. DOI: 10.1136/bjsports-2023-106994

Treat these as reasons to refer, not to adjust load

Periods that stop for three or more months in an athlete not using hormonal contraception.
Cycles that become markedly irregular over a season.
Missing periods alongside low energy, frequent illness, or repeated bone stress injuries.
An athlete raising a concern about her cycle that is outside your expertise.

Common question

Does the menstrual cycle change injury risk?

Coaches ask this most about the ACL. The honest answer is that the evidence does not support a confident yes.

A 2023 systematic review of how cycle phase affects anterior cruciate ligament injury-risk markers found mixed results and very low quality of evidence, and concluded it is inconclusive whether any single phase raises non-contact ACL injury risk. An earlier review and meta-analysis did find that knee laxity was greater around ovulation than in the follicular phase, but a laxity measurement is not the same as an injury, and the link to actual injuries stayed weak. So this is worth being aware of, and it is not a basis for changing training by phase.

Dos'Santos T, et al. "Effects of the menstrual cycle phase on anterior cruciate ligament neuromuscular and biomechanical injury risk surrogates in eumenorrheic and naturally menstruating women: A systematic review." PLOS ONE 2023;18(1):e0280800. DOI: 10.1371/journal.pone.0280800. See also Herzberg SD, et al., Orthopaedic Journal of Sports Medicine 2017;5(7):2325967117718781. DOI: 10.1177/2325967117718781

The practical takeaway matches the performance evidence. Keep doing the injury-prevention work that is well supported, such as managing wellness and readiness and sensible load progression, and treat cycle phase as context you observe per athlete rather than a risk dial you turn.

Getting started

How to start tracking, step by step

Tracking only works if athletes trust it. Build for consent and privacy first, data second.

1
Explain why, and make it optional
Tell athletes you want to understand symptoms and protect their health, not police their bodies. Make clear that logging is their choice and can be stopped at any time. Consent is the foundation, and without it the data is both unreliable and wrong to collect.
2
Keep it private and athlete-controlled
Menstrual data is personal. It should be logged by the athlete on her own device, visible to the small group of staff who need it, and never passed around in a shared spreadsheet column. If athletes don't control it, most will not share it.
3
Log the two things that matter
Record when the period starts and any symptoms that affect training, such as cramps, fatigue, or poor sleep. That is enough to spot patterns and health flags. You do not need to estimate ovulation to get value.
4
Read it next to load and wellness, per athlete
Look at each athlete's reported symptoms and cycle alongside her RPE, training load, and wellness scores. Build a picture of how she responds across her own cycle. Compare her to herself, not to a phase chart or to a teammate.
5
Refer health concerns out
If tracking surfaces missing or irregular periods, route it to a doctor or sports physician. Your job is to notice and refer, not to diagnose.

If you already run a daily wellness check-in, cycle tracking fits inside it rather than adding another habit. The best version is one your athletes barely notice they are doing.

In Fractall

How Fractall tracks the menstrual cycle

Fractall puts cycle context inside the wellness check-in athletes already complete, then shows estimated phases next to the rest of their data. It's part of every plan, with no add-on.

From a one-tap log to phase context on your dashboard

Athletes log menstruation with a single toggle inside the daily wellness check-in. The toggle is only visible to athletes who identify as female, and logging is always their choice, on their own phone.

The coach Wellness tab plots each athlete on her estimated phase, menstruation, follicular, ovulation, or luteal, with estimated dates for what's coming, right beside RPE, load, and wellness.

Open an athlete to read plain-language physiological context for her current phase, drawn from current research and expert interviews, then make the call yourself. Phase context also flows into one-click PDF reports.

Fractall Wellness tab plotting each female athlete on her estimated menstrual cycle phase, labelled estimated cycle phases based on athlete-reported menstruation data. — The squad view: estimated phases from athlete-reported data, next to wellness.

Fractall athlete detail showing estimated luteal phase, cycle day, wellness and RPE, and plain-language physiological context for the current phase. — Per athlete: estimated phase, wellness, RPE, and plain-language context to inform a decision.

Because it lives in the same check-in as the rest of your monitoring, you read the cycle as context, not as a separate app. See how the full feature works on the menstrual cycle tracking page.

Fractall estimates cycle phases from athlete-reported menstruation data. Estimated phases are for coaching context and are not a clinically verified measurement of cycle phase (see the methodology note above). Missing or irregular periods should be referred to a medical professional.

FAQs

Frequently asked questions

Short, honest answers to the questions coaches ask first.

Should athletes train differently in each phase of their cycle?

Not as a blanket rule. The best available meta-analysis found only a trivial performance difference across phases, graded the evidence as low quality, and recommended an individualised approach. Track how each athlete responds across her own cycle and adjust from that, rather than applying a phase-based template to the whole squad.

Can a tracking app tell me exactly which phase an athlete is in?

No. Calendar and app-based tracking give an estimated phase, not a verified one. Confirming a phase properly requires reporting the period plus hormone testing. Estimated phases are useful context as long as you treat them as estimates.

What should I do if an athlete's periods stop?

Treat it as a health flag and refer her to a doctor or sports physician. Absent or irregular periods can signal low energy availability and Relative Energy Deficiency in Sport, per the 2023 IOC consensus. This is not something to train through.

Does the menstrual cycle affect ACL injury risk?

The evidence is mixed and low quality. A 2023 systematic review found it inconclusive whether any phase raises non-contact ACL injury risk, though knee laxity may be higher around ovulation. It is worth awareness, not a reason to change training by phase.

How do I get athletes comfortable logging something this personal?

Make it optional, private, and controlled by the athlete on her own device, and explain that the goal is symptom awareness and health, not surveillance. In one study of over 1,000 athletes, most had never discussed the topic with a coach and 81% saw it as taboo, so honest data depends on trust and privacy.

Track the cycle inside the wellness check-in athletes already do

Fractall adds private, athlete-controlled cycle tracking to the same daily check-in, then shows estimated phases next to load and wellness. Start a 4-week free trial from €12.50 per team per month.

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