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Physical Activity Progression and Adherence in Healthy Adults


Original Editor - Ewa Jaraczewska based on the course by Tarina van der Stockt

Top Contributors - Jess Bell and Ewa Jaraczewska  

Introduction

When physical activity prescription is done well, clients can progress safely and develop habits that support ongoing commitment. This page sets out practical strategies for prescribing, progressing, and sustaining physical activity.

Physical Activity Prescription Considerations

Lasting habits are easier to build when the activity fits the client's life and situation. Early on, consistency matters more than having a perfect plan. Several factors can significantly impact consistency and should be considered when prescribing physical activity.[1]

Setting. Preference is important as people are more likely to stick with what they enjoy. Being active outdoors confers certain mental health benefits,[2] while indoor options are not weather-dependent and can be easier to keep up year-round. Many people do best with a mix, but the priority is finding out what the client will actually do.[1]

Social context. Some clients prefer to exercise alone; others might do better exercising in group settings where there is connection and accountability.[3] Asking 'Have you exercised regularly before, and what worked?' helps draw out whether a person prefers group or solo settings, or a combination of the two.

Accessibility and cost. Socioeconomic circumstances strongly influence physical activity, and addressing them openly is part of realistic physical activity prescription.[4] Cost, in particular, is often the most immediate barrier. Not all clients can afford gym memberships, classes, or equipment, and it is worth exploring this directly. Where necessary, free options such as walking, body-weight training, or community resources are effective alternatives to gyms.[1]

Cultural sensitivity. Cultural context can shape what feels acceptable and achievable for a person. Religious observances, a preference for gender-specific spaces, and traditional practices can all influence activity choices. Accounting for these aspects can make the plan feel more accessible.[5][6]

Ultimately, being curious about a client's individual context helps make the physical activity plan sustainable and meaningful.[1]

Physical Activity Progression

Once a client is established in their physical activity routine, the next consideration is progression. Two key principles guide safe progression: progressive overload and periodisation. It is also important to recognise overtraining and ensure appropriate recovery.

Progressive Overload

"Progressive overload refers to the need to increase the stimulus (stressor) placed upon the muscle throughout a training program."[7]

Progressive overload is the foundation of any progression plan: the body only adapts to demands that exceed what it is already used to. Load can be increased by adjusting:[8][9]

  • Frequency – the number of sessions per week
  • Duration – the length of each session
  • Intensity – how hard the session feels (moderate vs vigorous, load lifted)
  • Volume – the total sets, repetitions, or distance

Progressive overload should always be individualised. As a general habit, change only one variable at a time; adjusting more than one variable (e.g. frequency and intensity) in the same week makes it difficult to pinpoint the source of any adverse response and can unnecessarily increase injury risk.

The 10% rule suggests that weekly training volume should not increase by more than roughly 10%. It is a widely used rule of thumb rather than a firm evidence-based figure, and it is most useful for clients returning from injury, illness, or a long period of inactivity. It can be treated as a conservative default to adjust for the individual's training history, tissue tolerance, and goals.[1]

Periodisation

Periodisation is the structured variation of training over time to manage fatigue, promote adaptation, and prevent staleness.[10][11] For most clients, periodisation does not need to be complex. A simple 3:1 or 4:1 loading pattern, meaning three or four weeks of a progressive increase in load, followed by a lighter recovery week, before building again, works well for most healthy adults.[1] It also gives physiotherapists a natural checkpoint to reassess symptoms, adherence, and goals.[12]

The lighter recovery week should be framed positively, as some clients may read a deliberate reduction in load as "falling behind." Naming it in advance, for example as a recovery or consolidation week, can help maintain adherence and reduce the chance of a client either skipping the plan or adding extra sessions to compensate.[1]

Signs of Overtraining

Overtraining

Progressive training normally produces short-term fatigue that, with adequate rest, leads to adaptation and improved performance. Overtraining syndrome occurs when there is an ongoing imbalance between training load and recovery.[13][14] Physiotherapists should ask about, or screen for, the following in follow-up consultations:[15][16][17]

  • persistent fatigue not resolved by one or two rest days
  • declining performance despite continued or increased training
  • mood changes, such as irritability, low motivation or low mood
  • disrupted sleep
  • recurrent upper respiratory infections

A cluster of these signs warrants a planned reduction in training load and, where they persist or another cause seems likely, onward referral to exclude other conditions.[1]

The Cycle of Training and Recovery

Recovery

Recovery is an essential component of a physical activity plan. Key aspects to consider are sleep, active recovery, nutrition, and hydration.

Sleep quality and duration have a significant impact on physical performance, injury prevention, and health outcomes.[18][19] Sleep is one of the most important recovery variables we can influence, and inadequate sleep (less than 7 hours) is worth addressing as a priority.[20][21]

Active recovery, such as light walking or gentle mobility work, supports circulation and can reduce soreness without adding meaningful training stress.[21]

Nutrition, particularly protein distribution across the day, supports tissue repair. If providing dietary advice falls outside your scope, refer on to a dietitian where necessary.[22][20]

Hydration helps maintain performance and supports recovery.[23] Poor hydration (hypohydration) can stress the cardiovascular system and reduce physical capacity, increasing musculoskeletal injury risk.[24] Hydration is therefore an important consideration, especially for people training in hot conditions or completing long sessions.

Adherence Considerations

Around 50% of people who start an exercise programme drop out within six months.[25] Adherence therefore deserves as much attention as the exercise prescription itself.[25]

Motivational Interviewing

Motivational interviewing (MI) is a collaborative, client-centred communication style that helps people resolve uncertainty about behavioural change.[26] It is often used in physical activity, but the evidence base is mixed, with early gains fading within a year.[26] It is best viewed as a complementary technique alongside goal setting and self-monitoring that supports clients to articulate their own reasons for becoming more active.[1]

SMART Goals
Goal Setting

SMART goals (specific, measurable, achievable, relevant, time-bound) are a commonly used way to structure goal setting, and are often a required part of care planning. More recently, however, the approach has been questioned, with some authors noting a weak evidence base and inconsistent use in practice.[27]

When setting goals, SMART or otherwise, it is important to distinguish between outcome goals and process goals. Outcome goals (e.g. "lose 5kg") describe an endpoint outside the client's direct control. Process goals (e.g. "complete two strength sessions and three walks per week") describe the behaviour itself, which is within their control. For adherence, process goals tend to provide a more reliable anchor, since clients can succeed at them regardless of how quickly results follow.

It can also help to set short-, medium-, and long-term goals. This means clients get early wins, but the longer-term goals provide direction and meaning over time.[1][28]

The Cue-Routine-Reward Loop
Habit Formation

Habits form through a cue–routine–reward loop. Rather than leaving a new behaviour dependent on finding time, physiotherapists can help clients attach it to something that already happens reliably each day. For example, "after breakfast, I walk for 20 minutes." Where a client is struggling to start, the clinician can make the initial behaviour as small as possible, like "put on your walking shoes." The rest then tends to follow.[29] Pairing the routine with something rewarding, whether that is tracking the session, a sense of achievement, or an enjoyable podcast kept for walks, helps the behaviour consolidate over time.[1]

Self-Monitoring

Self-monitoring, such as the session tracking mentioned above, is one of the more consistently effective adherence tools available.[30][31] The best tool is the one the client will actually use, and that varies from person to person. Some may prefer a simple tick sheet on the fridge, while others get on better with an activity-tracking app.[1]

Managing Lapses

It helps to talk about lapses before they happen. A missed week or two through illness or work pressure does not undo the progress a client has already made. The bigger risk is often the all-or-nothing response to a lapse rather than the lapse itself. Working out a simple "if–then" re-entry plan with clients in advance can help. For example, "if I miss a week, then I will restart with [specific, low-barrier session] on [specific day]."

Social Support

"Social support refers to the emotional and material assistance provided within social relationships".[32]

Social support is a strong predictor of physical activity adherence, whether from formal sources, such as a coach, trainer or exercise class, or informal ones, such as a family member or a friend.[33] Following up with clients on their activity can be a helpful motivator. For many people, knowing that someone is interested and will ask how things are going creates a sense of social accountability.

Apps and Wearables

Where apps and wearables are used, the features with the strongest evidence are self-monitoring, feedback, and reminders. Social features such as leaderboards motivate some people, but are counterproductive for others. It is worth finding out a client's preference and setting up the technology with a clear purpose from the start.[34]

Clinical Considerations for Specific Subgroups

Additional factors must be considered for certain groups.[1]

Shift workers: Shift work is associated with insufficient physical activity and too much sedentary time.[35] Shorter, flexible, home-based sessions tend to work best, with lighter loads on work days and more volume on days off. Particular attention should be paid to sleep quality as a recovery priority.[35]

Sedentary occupations: Meeting minimum physical activity targets does not fully offset the independent metabolic risk of prolonged sitting. Multi-level strategies are needed to successfully reduce extended periods of sitting within sedentary jobs.[36] Alongside a formal exercise programme, clinicians can suggest a sitting-reduction plan for the working day (e.g. movement breaks every 30–60 minutes, walking meetings, or standing desks where available).

Highly active recreational athletes: This group of people is easily meeting and often exceeding physical activity guidelines. For very active clients, it is important to be alert for recurrent or overuse injuries, overtraining syndrome[37] and relative energy deficiency in sport (REDs).[38] For some clients, high-volume training is healthy and fulfilling, but for others, it can become compulsive, anxiety-driven, or tied to disordered eating patterns. Understanding this difference requires the clinician to build trust and ask careful questions.[1]

Summary

Effective physical activity prescription is about keeping clients active over the long term, not just starting them off. To support ongoing engagement:

  • progress activity in a structured, individualised way, using progressive overload and periodisation as a guide
  • build recovery into the plan from the outset
  • watch for overtraining in highly motivated clients, and adapt the approach for those with particular demands, such as shift workers and people in sedentary jobs
  • use goal setting, habit formation, and self-monitoring, and schedule regular follow-ups
  • treat lapses as expected events to plan for rather than failures

Resources

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 van der Stockt, T. Physical Activity Progression and Adherence Considerations for Healthy Adults Course. Physiopedia Plus, 2026.
  2. ↑ Wicks C, Barton J, Orbell S, Andrews L. Psychological benefits of outdoor physical activity in natural versus urban environments: A systematic review and meta-analysis of experimental studies. Appl Psychol Health Well Being. 2022 Aug;14(3):1037-1061.
  3. ↑ Teixeira PJ, Carraça EV, Markland D, Silva MN, Ryan RM. Exercise, physical activity, and self-determination theory: a systematic review. Int J Behav Nutr Phys Act. 2012 Jun 22;9:78.
  4. ↑ Bantham A, Ross SE, Sebastião E, Hall G. Overcoming barriers to physical activity in underserved populations. Progress in cardiovascular diseases. 2021 Jan 1;64:64-71.
  5. ↑ Koa AJAF, Chou CC, Lindayani L, Wang CJ. Exploring barriers to physical activity participation among female nursing students adhering to specific social-cultural norms in Indonesia: A qualitative study. Belitung Nurs J. 2024 Aug 28;10(4):438-447.
  6. ↑ Rio CJ, Saligan LN. Understanding physical activity from a cultural-contextual lens. Front Public Health. 2023 Aug 4;11:1223919.
  7. ↑ Currier BS, D'Souza AC, Singh MAF, Lowisz CV, Rawson ES, Schoenfeld BJ, et al. American College of Sports Medicine Position Stand. Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults: An Overview of Reviews. Med Sci Sports Exerc. 2026 Apr 1;58(4):851-872.
  8. ↑ Pedersen H, Saeterbakken AH, Fimland MS, Iversen VM, Schoenfeld BJ, Stien N, Andersen V. Effects of one long vs two short resistance training sessions on training volume and affective responses in resistance-trained women. Front Psychol. 2022 Sep 29;13:1010596.
  9. ↑ Stavrinou PS, Astorino TA, Giannaki CD, Aphamis G, Bogdanis GC. Customizing intense interval exercise training prescription using the "frequency, intensity, time, and type of exercise" (FITT) principle. Front Physiol. 2025 Apr 3;16:1553846.
  10. ↑ Strohacker K, Fazzino D, Breslin WL, Xu X. The use of periodization in exercise prescriptions for inactive adults: A systematic review. Prev Med Rep. 2015 May 6;2:385-96.
  11. ↑ Lorenz D, Morrison S. Current concepts in periodization of strength and conditioning for this sports physical therapist. Int J Sports Phys Ther. 2015 Nov;10(6):734-47.
  12. ↑ Strohacker K, Fazzino D, Breslin WL, Xu X. The use of periodisation in exercise prescriptions for inactive adults: A systematic review. Preventive Medicine Reports. 2015 Jan 1;2:385-96.
  13. ↑ Symons IK, Bruce L, Main LC. Impact of overtraining on cognitive function in endurance athletes: a systematic review. Sports Med Open. 2023 Aug 8;9(1):69.
  14. ↑ Brenner JS, Watson A; Council on Sports Medicine and Fitness. Overuse injuries, overtraining, and burnout in young athletes. Pediatrics. 2024 Jan 1;153(2):e2023065129.
  15. ↑ Buchwald RL, Buchwald J, Lehtonen E, Peltonen JE, Uusitalo AL. A comprehensive analysis of overtraining syndrome in athletes and recreational exercisers. International journal of sports medicine. 2025 Nov;46(12):898-907.
  16. ↑ Kreher JB, Schwartz JB. Overtraining syndrome: a practical guide. Sports Health. 2012 Mar;4(2):128-38.
  17. ↑ Meeusen R, Duclos M, Foster C, Fry A, Gleeson M, Nieman D, et al. Prevention, diagnosis, and treatment of the overtraining syndrome: joint consensus statement of the European College of Sport Science and the American College of Sports Medicine. Med Sci Sports Exerc. 2013 Jan;45(1):186-205.
  18. ↑ Charest J, Grandner MA. Sleep and athletic performance: impacts on physical performance, mental performance, injury risk and recovery, and mental health. Sleep Med Clin. 2020 Mar;15(1):41-57.
  19. ↑ Kaczmarek F, Bartkowiak-Wieczorek J, Matecka M, Jenczylik K, Brzezińska K, Gajniak P, et al. Sleep and athletic performance: a multidimensional review of physiological and molecular mechanisms. J Clin Med. 2025 Oct 27;14(21):7606.
  20. ↑ 20.0 20.1 Doherty R, Madigan S, Warrington G, Ellis J. Sleep and Nutrition Interactions: Implications for Athletes. Nutrients. 2019 Apr 11;11(4):822.
  21. ↑ 21.0 21.1 Mason L, Connolly J, Devenney LE, Lacey K, O'Donovan J, Faulkner M, Doherty R. The Sleep, Recovery, and Nutrition Characteristics of Elite Adolescent Athletes. Sports (Basel). 2025 Feb 10;13(2):50.
  22. ↑ Bonilla DA, Pérez-Idárraga A, Odriozola-Martínez A, Kreider RB. The 4R's Framework of Nutritional Strategies for Post-Exercise Recovery: A Review with Emphasis on New Generation of Carbohydrates. Int J Environ Res Public Health. 2020 Dec 25;18(1):103.
  23. ↑ McDermott BP, Anderson SA, Armstrong LE, Casa DJ, Cheuvront SN, Cooper L, Kenney WL, O'Connor FG, Roberts WO. National Athletic Trainers' Association Position Statement: Fluid Replacement for the Physically Active. J Athl Train. 2017 Sep;52(9):877-895.
  24. ↑ Judge LW, Bellar DM, Popp JK, Craig BW, Schoeff MA, Hoover DL, et al. Hydration to maximize performance and recovery: knowledge, attitudes, and behaviors among collegiate track and field throwers. J Hum Kinet. 2021 Jul 28;79:111-122.
  25. ↑ 25.0 25.1 Linke SE, Gallo LC, Norman GJ. Attrition and adherence rates of sustained vs. intermittent exercise interventions. Ann Behav Med. 2011 Oct;42(2):197-209.
  26. ↑ 26.0 26.1 Zhu S, Sinha D, Kirk M, Michalopoulou M, Hajizadeh A, Wren G, Doody P, Mackillop L, Smith R, Jebb SA, Astbury NM. Effectiveness of behavioural interventions with motivational interviewing on physical activity outcomes in adults: systematic review and meta-analysis. Bmj. 2024 Jul 10;386.
  27. ↑ Swann C, Jackman PC, Lawrence A, Hawkins RM, Goddard SG, Williamson O, et al. The (over)use of SMART goals for physical activity promotion: A narrative review and critique. Health Psychol Rev. 2023 Jun;17(2):211-226.
  28. ↑ Swann C, Jackman PC, Lawrence A, Hawkins RM, Goddard SG, Williamson O, Schweickle MJ, Vella SA, Rosenbaum S, Ekkekakis P. The (over) use of SMART goals for physical activity promotion: A narrative review and critique. Health psychology review. 2023 Apr 3;17(2):211-26.
  29. ↑ Ellingson LD, Lansing JE, DeShaw KJ, Peyer KL, Bai Y, Perez M, Phillips LA, Welk GJ. Evaluating Motivational Interviewing and Habit Formation to Enhance the Effect of Activity Trackers on Healthy Adults' Activity Levels: Randomized Intervention. JMIR Mhealth Uhealth. 2019 Feb 14;7(2):e10988.
  30. ↑ Burgard M, Gallagher KI. Self-monitoring: influencing effective behavior change in your clients. ACSM's Health & Fitness Journal. 2006 Jan 1;10(1):14-9.
  31. ↑ Vetrovsky T, Borowiec A, Juřík R, Wahlich C, Śmigielski W, Steffl M, Tufano JJ, Drygas W, Stastny P, Harris T, Małek Ł. Do physical activity interventions combining self-monitoring with other components provide an additional benefit compared with self-monitoring alone? A systematic review and meta-analysis. Br J Sports Med. 2022 Dec;56(23):1366-1374.
  32. ↑ Huang J, Lv Q, Zeng X. The influence of social support and empowerment on physical exercise behavior in university students: A self-determination theory perspective. Acta psychologica. 2025 Jul 1;257:105086.
  33. ↑ Oka RK, King AC, Young DR. Sources of social support as predictors of exercise adherence in women and men ages 50 to 65 years. Womens Health. 1995 Summer;1(2):161-75.
  34. ↑ Sousa Basto P, Ferreira P. Mobile applications, physical activity, and health promotion. BMC Health Services Research. 2025 Mar 10;25(1):359.
  35. ↑ 35.0 35.1 Sprajcer M, Shriane AE, Ferguson SA, Gupta CC, Smith RG, Kim JJ, Baum CL, Kolbe-Alexander T, Stanton R, Thomas MJ, Paterson JL. ‘I just didn’t find time to exercise’: Co-designed physical activity resources for young Australian shiftworkers. Health promotion international. 2025 Dec;40(6):daaf175.
  36. ↑ Buman MP, Mullane SL, Toledo MJ, Rydell SA, Gaesser GA, Crespo NC, Hannan P, Feltes L, Vuong B, Pereira MA. An intervention to reduce sitting and increase light-intensity physical activity at work: Design and rationale of the 'Stand & Move at Work' group randomized trial. Contemp Clin Trials. 2017 Feb;53:11-19.
  37. ↑ Stellingwerff T, Heikura IA, Meeusen R, Bermon S, Seiler S, Mountjoy ML, Burke LM. Overtraining Syndrome (OTS) and Relative Energy Deficiency in Sport (RED-S): Shared Pathways, Symptoms and Complexities. Sports Med. 2021 Nov;51(11):2251-2280.
  38. ↑ Fortuna M, Hetnar P, Kiper S, Toczek S, Tomala M, Jastrowicz-Chęć K, Koryszko K, Pokrywka N, Suwała D, Polak M. Relative energy deficiency in sport (RED-S): a systematic overview of mechanisms, effects, and clinical implications. Quality in Sport. 2025 Jun 9;42:60506-.
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