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Effect of low- and moderate-intensity endurance exercise on physical functioning among breast cancer survivors: a randomized controlled trial. | LitMetric

AI Article Synopsis

  • The study aimed to compare how low-intensity versus moderate-intensity exercises affect the physical functioning of breast cancer survivors aged 50 and older post-treatment.
  • Participants followed a structured exercise program for six months and received support through counseling and informational materials.
  • Results showed that while both exercise intensities improved physical functioning over time, there were no significant differences between the two groups, indicating that both approaches were beneficial for enhancing health outcomes.

Article Abstract

Purpose: Compare the effects of low-intensity and moderate-intensity exercise on physical functioning in breast cancer survivors.

Methods: Women aged 50 + years and post-primary treatment for stage 0 to III breast cancer were randomly assigned to a 6-month low-intensity (LIG) or moderate-intensity (MIG) exercise group. Participants were instructed to walk (low- or moderate-intensity) for 30 min five days a week, followed by flexibility exercises, and do strengthening and balance exercises twice weekly. Exercise adherence was facilitated with seven individual counseling sessions tapered over six months and a Theory of Planned Behavior-based booklet. Assessments occurred at baseline, 6 months (post-intervention), and 12 months. Primary measures were PROMIS Physical Functioning, PROMIS Global Health, and six-minute walk test (6MWT).

Results: Of 101 women randomized, 65 (64.4%) completed the study. No statistically significant between-group differences occurred at post-intervention or 12 months. Compared to baseline, within-group improvements in PROMIS physical functioning occurred (LIG increased from 45.87 ± 7.58 to 48.37 ± 7.13 post-intervention (p = 0.01); MIG increased from 45.26 ± 7.27 to 49.53 ± 8.80 post-intervention (p = 0.002) and 48.91 ± 9.29 at 12 months (p = 0.02)). Similarly, Global Health physical health improved (LIG increased from 46.04 ± 5.00 to 49.19 ± 5.76 post-intervention (p = 0.001); MIG increased from 45.06 ± 6.59 to 48.20 ± 7.33 post-intervention (p = 0.005) and 48.49 ± 7.89 at 12 months (p = 0.007)). 6MWT improved between post-intervention and 12 months for the LIG (469.99 ± 64.69 m to 492.19 ± 68.64 m, p = 0.008) and between baseline and post-intervention for the MIG (471.01 ± 62.69 m to 495.88 ± 66.64 m, p = 0.006).

Conclusion: Both low and moderate-intensity exercise led to significant improvement in physical functioning. When feasible and acceptable, prescribing low-intensity exercise can yield important benefits.

Trial Registration Number: ClinicalTrials.gov identifier: NCT02982564.

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Source
http://dx.doi.org/10.1007/s00520-024-09100-2DOI Listing

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