PLoS ONE plos plosone PLOS ONE 1932-6203 Public Library of Science San Francisco, CA USA 10.1371/journal.pone.0231075 PONE-D-20-07708 Correction Correction: Using financial incentives to promote physical activity in American Indian adolescents: A randomized controlled trial Short Kevin R. Chadwick Jennifer Q. Cannady Tamela K. Branam Dannielle E. Wharton David F. Tullier Mary A. Thompson David M. Copeland Kenneth C. 25 3 2020 2020 15 3 e0231075 2020 Short et al This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Using financial incentives to promote physical activity in American Indian adolescents: A randomized controlled trial

There is an error in the footnote of Table 1. “Increase from baseline to end of Phase 1 within group, p < 0.03” should be corrected to “Increase from baseline to end of Phase 1 within group, p<0.05”. Please see the correct Table 1 here.

10.1371/journal.pone.0231075.t001 Clinical and physiological characteristics at baseline, changes at the end of Phase 1, and exercise performance in Phase 1.
Standard Group Incentive Group
Baseline Change at End of Phase Baseline Change at End of Phase
BMI, kg/m2* 34.9 ± 8.5 0.7 ± 1.1† 34.7 ± 6.2 0.7 ± 1.8†
BMI, percentile 98 ± 3 0 ± 1 98 ± 3 0 ± 1
Body fat, % 43.6 ± 8.1 0.9 ± 2.7 43.1 ± 6.9 0.1 ± 4.2
Fat-free mass, kg 48.6 ± 10.2 0.6 ± 2.9 52.2 ± 10.2 0.9 ± 4.3
Waist circumference, cm 104 ± 16 -1 ± 5 108 ± 12 0 ± 8
VO2peak, ml/kg FFM/min* 34.2 ± 7.1 3.4 ± 5.7† 35.2 ± 8.7 3.7 ± 7.5†
Steps per day 6,404 ± 3,425 -869 ± 2,318 6,218 ± 2,419 483 ± 3,401
Glucose, mmol/l 5.3 ± 0.5 0.2 ± 1.0 5.1 ± 0.4 0.4 ± 2.1
Insulin, pmol/l 164.7 ± 229.3 -2.9 ± 166.9 119.7 ± 94.3 -11.4 ± 80.3
iHOMA2 (%S) 74.9 ± 48.5 -13.8 ± 40.7 68.6 ± 44.2 -4.9 ± 26.2
HbA1c (%) 5.4 ± 0.3 0.1 ± 0.2† 5.3 ± 0.2 0.1 ± 0.6
Exercise sessions performed — 26 ± 16 — 28 ± 15
Total MVPA time, h — 15.2 ± 10.1 — 15.0 ± 8.1
MVPA time per exercise session, minutes — 35 ± 7 — 32 ± 8
MVPA time in moderate intensity range, % — 63 ± 18 — 64 ± 18
Payments for exercise, USD$ — 99 ± 58 — 245 ± 144§

Values shown as mean ± SD. BMI, body mass index; VO2peak, peak oxygen uptake during aerobic fitness test; FFM, fat-free mass; iHOMA2, integrated homeostatic model of assessment; HbA1c, hemoglobin A1c; MVPA, moderate-to-vigorous activity. The Standard group had 18 girls, 17 boys; mean age 14.2 ± 2.4 years at baseline.

The Incentive group had 25 girls, 17 boys; mean age 14.4 ± 2.3 years at baseline.

* Main effect of time for entire cohort, p < 0.01.

† Increase from baseline to end of Phase 1 within group, p < 0.05.

§ Difference between groups, p < 0.01.

 Reference Short KR, Chadwick JQ, Cannady TK, Branam DE, Wharton DF, Tullier MA, et al. (2018) Using financial incentives to promote physical activity in American Indian adolescents: A randomized controlled trial. PLoS ONE 13(6): e0198390. https://doi.org/10.1371/journal.pone.0198390 29856832