Relative to usual-care participants , telephone counseling participants achieved modest , but significant , improvements in weight loss ( relative rate [ RR ] -1.42 % of baseline body weight [ 95 % CI -2.54 to -0.30 % of baseline body weight ] ) , MVPA ( RR 1.42 [ 95 % CI 1.06-1 .90 ] ) , diet quality ( 2.72 [ 95 % CI 0.55-4 .89 ] ) , and waist circumference ( -1.84 cm [ 95 % CI -3.16 to -0.51 cm ] ) , but not in HbA1c level ( RR 0.99 [ 95 % CI 0.96-1 .02 ] ) , or other cardio-metabolic markers .