For older adults, which aerobic frequency is considered valid?

• A. Five days per week of moderate activity
• B. Five days per week moderate, or three days per week vigorous, or a combination of three to five days per week
• C. Two days per week of light activity
• D. One day per week mixed modalities

Answer: (B)

Regular weekly frequency matters for older adults because spreading aerobic activity across multiple days helps reach the total weekly volume needed for benefits while supporting safety and adherence. The valid pattern allows flexibility: five days of moderate-intensity activity, or three days of vigorous-intensity activity, or a combination spread over three to five days per week. This aligns with aiming for about 150 minutes of moderate or 75 minutes of vigorous aerobic activity each week, with the total volume achieved through appropriately distributed sessions. The other options don’t meet the recommended weekly dose or frequency: two days of light activity may not add up to the target weekly volume, and one day per week of mixed modalities is far below the recommended frequency.