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Table 4 Analysis of outcomes

From: Evaluating the reach, effectiveness, adoption, implementation and maintenance of the Resistance Training for Teens program

  Baseline, n 10-week, n Adjusted difference in change,
Mean (95% CI)a
Time
Mean (95% CI) Mean (95% CI) p
Fitness tests
 Push-ups (reps) 15.18 (11.99,18.37) 435 18.39 (15.20,21.58) 422 3.21 (1.81,4.61)  < 0.001
 Standing long jump (cm) 170.57 (162.27,178.88) 440 176.00 (167.69,184.30) 431 5.42 (0.93,9.92) 0.023
Perceived fitnessb
 Perceived general fitness (units) 3.73 (3.58,3.90) 676 3.75 (3.60,3.90) 572 0.02 (-0.05,0.09) 0.527
 Perceived CRF (units) 3.43 (3.36,3.49) 673 3.55 (3.48,3.62) 573 0.13 (0.07,0.19)  < 0.001
 Perceived MF (units) 3.49 (3.38,3.60) 674 3.53 (3.42,3.64) 576 0.04 (-0.03,0.12) 0.225
 Perceived speed/agility (units) 3.61 (3.54,3.67) 676 3.63 (3.56,3.70) 574 0.02 (-0.03,0.08) 0.392
 Perceived flexibility (units) 3.07 (2.96,3.18) 668 3.20 (3.09,3.30) 574 0.13 (0.05,0.21)  < 0.05
Self-reported participation in PA
 Total PA (days/week) 3.71 (3.27,4.14) 710 3.93 (3.49,4.37) 566 0.23 (-0.90,0.55) 0.146
 Strength-related PA (days/week) 2.08 (1.79,2.38) 659 2.79 (2.49,3.09) 567 0.70 (0.47,0.93)  < 0.001
Motivation, self-efficacy and well-being
 PA autonomous motivation (units)c 3.96 (3.91,4.03) 672 3.92 (3.85,3.98) 561 -0.05 (-0.10,0.01) 0.056
 Motivation for RT (units)c 3.47 (3.34,3.59) 668 3.48 (3.35,3.62) 567 0.02 (-0.10,0.14) 0.743
 RT self-efficacy (units)d 3.82 (3.71,3.93) 677 3.91 (3.79,4.02) 573 0.09 (0.03,0.14)  < 0.05
  1. Abbreviations: CI Confidence intervals, CRF Cardiorespiratory fitness, MF Muscular fitness, PA Physical activity, RT Resistance training
  2. a Within group change over time from mixed model that included baseline and follow-up, and school as a random intercept
  3. b Perceived fitness scale: Participants report perceptions of their ‘general fitness’ and four other specific fitness components on a five-point scale, ranging from Very poor (1) to Very good (5)
  4. c Autonomous motivation for PA and Motivation for RT evaluated using a five-point scale, ranging from Not true for me (1) to Very true for me (5)
  5. d RT self-efficacy evaluated using a five-point scale, ranging from Strongly disagree (1) to Strongly Agree (5)