In a trial of 29 frail older adults, four weeks of low-methoxy pectin raised 30-second sit-to-stand repetitions by 2.07 compared with 0.71 for placebo.In a trial of 29 frail older adults, four weeks of low-methoxy pectin raised 30-second sit-to-stand repetitions by 2.07 compared with 0.71 for placebo.