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Diabetes Obes Metab. 2019 Mar;21(3):550-559. doi: 10.1111/dom.13551. Epub 2018 Oct 29.

Effectiveness of high-intensity interval training combined with resistance training versus continuous moderate-intensity training combined with resistance training in patients with type 2 diabetes: A one-year randomized controlled trial.

Author information

1
Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Lisbon, Portugal.
2
Faculdade de Educação Física e Desporto, Universidade Lusófona, Lisbon, Portugal.
3
Education and Research Centre, APDP - Diabetes Portugal (APDP-ERC), Lisbon, Portugal.
4
Military Forces Hospital, Lisbon, Portugal.
5
Light Hospital, Lisbon, Portugal.
6
NOVA Medical School, Lisbon, Portugal.
7
Genetics Laboratory Environmental Health Institute (ISAMB), Faculty of Medicine, University of Lisbon, Lisbon, Portugal.
8
Institute of Scientific Research Bento da Rocha Cabral, Lisbon, Portugal.

Abstract

AIMS:

To evaluate the impact of one-year high intensity interval training (HIIT) combined with resistance training (RT) vs continuous moderate intensity training (MCT) combined with RT on glycaemic control, body composition and cardiorespiratory fitness (CRF) in patients with type 2 diabetes.

MATERIALS AND METHODS:

A randomized controlled trial included 96 participants with type 2 diabetes for a one-year supervised exercise intervention with three groups: Control, HIIT with RT and MCT with RT). The control group received standard counseling regarding general PA guidelines, with no structured exercise sessions. The main outcome variable was HbA1c (%). Secondary outcomes were other glycaemic variables, body composition, anthropometry measurements, CRF and enjoyment of exercise. Generalized estimating equations (GEE) were used to model outcomes.

RESULTS:

Among the 96 participants enrolled in the intervention, 80 were randomized, with a mean (SD) age of 58.5 years (7.7) and a mean HbA1c of 7.2% (1.6). After adjusting the model for sex and total moderate-to-vigorous physical activity (MVPA), we found that both the MCT with RT (β, 0.003; P, 0.921) and the HIIT with RT (β, 0.025; P, 0.385) groups had no effect on HbA1c. A favourable effect was observed in the MCT with RT group, with a reduction in whole body fat index (β, -0.062; P, 0.022), android fat index (β, -0.010; P, 0.010) and gynoid fat index (β, -0.013; P, 0.014). Additionally, CRF increased during the intervention, but only in the MCT with RT group (β, 0.185; P, 0.019).

CONCLUSIONS:

The results from this study suggest that there was no effect of either MCT with RT or HIIT with RT on glycaemic control in individuals with type 2 diabetes. However, the combination of MCT and RT improved body composition and CRF following a one-year intervention.

KEYWORDS:

HbA1c; RCT; abdominal fat; body composition; cardiorespiratory fitness; glycemic control; intervention

PMID:
30284352
DOI:
10.1111/dom.13551

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