Table 3.

Study Measures for Subjects Who Completed 12 Weeks of Health Coaching

AssessmentBaseline12 WeeksP Value*
Body mass index (kg/m2)34.1 (7.0)33.4 (7.0).014
Waist circumference (cm)104 (16)100 (16)<.001
Systolic blood pressure (mm)116 (10)115 (9).385
Diastolic blood pressure (mm)70 (8)66 (8).031
Fruits, vegetables, and beans (½-cup servings/day)5.1 (3.8)5.8 (3.9).291
Sugary beverages (12-oz servings/day)0.35 (0.51)0.17 (0.31).039
Total physical activity (min/week)340 (292)476 (388).007
Moderate or strenuous physical activity (min/week)123 (124)207 (263).061
Sleep score17.2 (3.5)15.9 (3.9).016
Stress score18.3 (7.6)16.8 (8.3).229
Fatigue score22.7 (7.8)20.9 (7.8).096
Confidence to carry out physical activity§6.8 (1.6)7.7 (1.7).002
Confidence for improving diet§7.3 (1.4)7.2 (2.0).756
  • Data are mean (standard deviation) for 33 subjects who completed measures at both baseline and 12 weeks. The data include all subjects, regardless of coaching goal. Of the 33 subjects with completed 12-week data, 32 subjects received coaching that included a physical activity goal, 26 subjects with a diet goal, and 7 subjects with a better sleep goal.

  • * P values for differences over time are from paired t tests for subjects who completed 12 weeks of health coaching. A total of 33 subjects had paired anthropometric measures, and 32 subjects had paired questionnaire data. Physical activity, diet, and sleep were assessed using the methods described in Table 2.

  • Stress was assessed using the 10-item Perceived Stress Scale developed by Cohen et al.28

  • Fatigue was assessed using the Neuor-QOL Item Bank 1.0 Fatigue Short Form (8 items) from the Patient-Reported Outcomes Measurement Information System (PROMIS) health organization.26

  • § Confidence for carrying out the indicated health behaviors was assessed using a study-specific questionnaire of 2 items that were answered on a 5-point scale (see the Methods).