The Exercise Snacks intervention comprises two daily sessions of approximately ten minutes each, five days per week (total ≈ 100 minutes/week). Each ten-minute session consists largely of alternating one-minute bouts of activity and one-minute rest. The exercises followed a structured three-month progression. Intensity targeted at a 4 on Borg CR10 Scale "somewhat hard" with progression rules (increase repetitions, range of motion and exercise difficulty).

Conventional Exercise comprises two supervised 50 minutes sessions per week (total ≈ 100 minutes/week). Organized in one-minute exercise/one-minute rest intervals equal in content to the snacks but performed in longer continuous practice. The exercises followed a structured three-month progression. Intensity targeted at a 4 on Borg CR10 Scale "somewhat hard" with progression rules (increase repetitions, range of motion and exercise difficulty).

Exercise snacks, defined as short bouts of gentle intermittent exercise performed twice a day

The Short Physical Performance Battery (SPPB) is a test of lower extremity functioning that combines scores from usual gait speed, standing balance, and chair stand tests. Scores range from 0 to 12, with higher scores indicating better physical functioning.

HADS consists of two subscales, one measuring anxiety, with seven items, and one measuring depression, with seven items, which are scored separately. Each item was answered by the participant on a 4-point (0-3) response category so the possible scores ranged from 0 to 21 for anxiety and 0 to 21 for depression. The HADS manual indicates that a score between 0 and 7 is ''normal'', between 8 and 10 ''mild'', between 11 and 14 ''moderate'' and between 15 and 21 ''severe''.