A researcher is studying whether current exercise guidelines for reducing blood

Question

A researcher is studying whether current exercise guidelines for reducing blood pressure (BP) are applicable to older persons. This study design was a six-month randomized controlled trial of combined aerobic and resistance training; controls followed usual physical activity and diet advice. Participants (ages 55-75) had untreated systolic BP (SBP) of 130 to 159 mm Hg or diastolic BP (DBP) of 85 to 99 mm Hg. There were 51 exercisers and 53 controls who completed the trial. The overall mean +/- SD age was 63.6 +/- 5.7. There were mean decreases in both SBP and DBP, respectively, among exercisers and among controls (p<0.001 for all). There were no significant group differences in mean SBP change from baseline. The mean DBP reduction was greater among exercisers. Body composition improvements explained 8% of the SBP reduction (p=0.006) and 17% of the DBP reduction (P<0.001). Which two pieces of data should be used to make a conclusion from this study? Choose 2 answers

A. Mean Blood Pressure

B. Group BMI values

C. Body composition means

D. P values for both groups.

Explanation / Answer

We can conclude from the study:

The mean DBP reduction was greater among exercisers.

Body composition improvements explained 8% of the SBP reduction (p=0.006) and 17% of the DBP reduction (P<0.001).

the mean dbp reduction was greater among exercisers because body composition improvements explained higher perecentage (17%) of the dbp reduction.

C) Body composition means

D) p values for both groups

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