{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T07:51:45Z","timestamp":1791359505577,"version":"4.3.1"},"reference-count":35,"publisher":"Korea Society for Exercise Nutrition","issue":"3","license":[{"start":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:00:00Z","timestamp":1790726400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/2.0\/"}],"content-domain":{"domain":["e-pan.org"],"crossmark-restriction":true},"short-container-title":["Phys Act Nutr"],"published-print":{"date-parts":[[2026,9,30]]},"abstract":"<jats:p>[Purpose] Blood flow restriction (BFR) training involves limiting blood flow to specific areas, enabling low-intensity exercise to mimic high-intensity workouts. This study explored the effectiveness of combining BFR with online exercise classes to improve strength and functionality in older adults.[Methods] Over ten weeks, men and women, N = 41 with 22 BFR and 19 control (CON), (mean age = 70 \u00b1 6.2) participated in Zoom sessions twice a week. Strength in the hamstrings and quadriceps was assessed using a dynamometer, while functionality was tested with the 30-second sit-to-stand, 8-foot timed upand-go, and 30-second calf raise tests.[Results] Both the BFR and CON groups showed improvements in muscle strength and lower extremity functionality. However, the BFR group achieved greater gains, mainly in functional performance.[Conclusion] The observed preliminary evidence suggests that BFR augment the effectiveness of low-intensity exercise by providing an additional physiological stimulus without increasing mechanical load. This study highlights a novel, accessible, and practical strategy for improving functional mobility in aging populations, particularly for individuals who may be unable or unwilling to engage in higher-intensity training. 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