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| The effect of high-intensity power training on habitual, intervention and total physical activity levels in older adults with type 2 diabetes: secondary outcomes of the GREAT2DO randomized controlled trial |
| Mosalman Haghighi M, Mavros Y, Kay S, Simpson KA, Baker MK, Wang Y, Zhao RR, Meiklejohn J, Climstein M, O'Sullivan AJ, de Vos N, Baune BT, Blair SN, Simar D, Singh N, Schlicht J, Fiatarone Singh MA |
| Geriatrics 2021 Mar;6(1):15 |
| clinical trial |
| 7/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
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BACKGROUND: We examined the effect of power training on habitual, intervention and total physical activity (PA) levels in older adults with type 2 diabetes and their relationship to metabolic control. MATERIALS AND METHODS: 103 adults with type 2 diabetes were randomized to receive supervised power training or sham exercise three times/week for 12 months. Habitual, intervention, and total PA, as well as insulin resistance (HOMA2-IR) and glycosylated hemoglobin (HbA1c), were measured. RESULTS: Participants were aged 67.9 +/- 5.5 yrs, with well-controlled diabetes (HbA1c = 7.1%) and higher than average habitual PA levels compared to healthy peers. Habitual PA did not change significantly over 12 months (p = 0.74), and there was no effect of group assignment on change over time in habitual PA over 0 to 6 (p = 0.16) or 0 to 6 to 12 months (p = 0.51). By contrast, intervention PA, leg press tonnage and total PA increased over both 6- and 12-month timepoints (p = 0.0001), and these changes were significantly greater in the power training compared to the sham exercise group across timepoints (p = 0.0001). However, there were no associations between changes in any PA measures over time and changes in metabolic profile. CONCLUSION: Structured high-intensity power training may be an effective strategy to enhance overall PA in this high-risk cohort.
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