Older Adults / Seniors

WHO 2020 guidelines and U.S. Physical Activity Guidelines (2nd ed., 2018) for adults ≥65:

• Aerobic: 150–300 minutes/week of moderate-intensity, OR 75–150 minutes/week of vigorous-intensity, OR an equivalent combination — same target as younger adults.
• Muscle-strengthening: moderate-or-greater intensity involving all major muscle groups on ≥2 days/week.
• Multicomponent activity — the key addition for older adults. WHO 2020: varied multicomponent activity that emphasises functional balance and strength training at moderate or greater intensity on ≥3 days/week, to enhance functional capacity and prevent falls (now recommended for all older adults, not only those with poor mobility). PAGA 2018: multicomponent activity that includes balance training as well as aerobic and muscle-strengthening activity, as part of weekly activity (no set number of days). See Fall-Prevention Exercise (Older Adults), Fall Prevention for Older Adults (Overview).
• If 150 min/week is not achievable because of chronic conditions, PAGA says older adults should be as physically active as their abilities and conditions allow; WHO says as active as their functional ability allows, adjusting effort to their fitness. PAGA notes the biggest gain comes from going from no activity to about 60 minutes a week — some activity is better than none.

Why strength + balance: aging brings sarcopenia (loss of muscle mass/strength, see Sarcopenia & Age-Related Muscle Loss), reduced power, bone loss, and impaired balance. Resistance training (and especially power training — moving moderate loads quickly, where safe) is highly effective for maintaining function, gait speed, and independence. Balance and gait training reduce fall risk.

Practical resistance prescription: ~2–3 days/week, 1–3 sets of 8–15 reps for major muscle groups; begin with lower intensity and longer learning period; include functional/multijoint patterns (sit-to-stand, step-ups, carries).

• Longer warm-ups and recovery; tissues are less tolerant of rapid load jumps.
• Common comorbidities (hypertension, type 2 diabetes, osteoarthritis, osteoporosis, CVD) modify the program — see those modules.
• Polypharmacy: medications (e.g., beta-blockers blunt HR; diuretics/antihypertensives affect BP/hydration; some raise fall/dizziness risk) alter exercise response → use RPE alongside HR.
• Sensory/cognitive changes: ensure safe environment, good footwear, supervision as needed.

• Recommend medical clearance for those with known/symptomatic CV/metabolic/renal disease before vigorous activity (see Medical Clearance & Pre-Participation Screening).
• Red flags to stop and seek care: chest pain/pressure, severe breathlessness, dizziness/fainting, new severe joint pain, sudden weakness.

• ≥65: 150–300 min/wk moderate (or 75–150 vigorous) aerobic.
• Muscle-strengthening ≥2 d/wk; multicomponent balance + strength training ≥3 d/wk for fall prevention (WHO 2020; PAGA asks for it weekly without a day count).
• If full target not possible: be as active as conditions allow — some is better than none.
• Counter sarcopenia/power loss with resistance + (where safe) power training.
• Use RPE alongside HR (medications blunt HR response); longer warm-up/recovery.