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High-intensity interval neuromuscular training promotes exercise behavioral regulation, adherence and weight loss in inactive obese women
Batrakoulis A, Loules G, Georgakouli K, Tsimeas P, Draganidis D, Chatzinikolaou A, Papanikolaou K, Deli CK, Syrou N, Comoutos N, Theodorakis Y, Jamurtas AZ, Fatouros IG
European Journal of Sport Science 2020;20(6):783-792
clinical trial
4/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

It is unclear how high-intensity, interval-type nontraditional exercise training programs can be feasible and effective options for inactive obese individuals. This randomized controlled trial investigated the hypothesis that a 10-month high-intensity, group interval-type neuromuscular training program (DoIT) with adjunct portable modalities, performed in a small-group setting, induces improvements in psychological well-being, subjective vitality and exercise behavioral regulations in obese women. Associations between adherence, psychological and physiological indicators were also investigated. Forty-nine previously inactive obese females (36.4 +/- 4.4 yrs) were randomly assigned to three groups (control; N = 21, 10-month training; N = 14, or 5-month training plus 5 month-detraining; N = 14). DoIT was a supervised, progressive, and time-efficient (< 30 min) program that used 10 to 12 functional/neuromotor exercises and prescribed work and rest time intervals (20 to 40 sec) in a circuit fashion (1 to 3 rounds) for 10 months. Questionnaires were used to measure psychological distress, subjective vitality, and behavioral regulations in exercise at pre-, mid-, and post-intervention. The 10-month training reduced psychological distress (72%, p = 0.001), external regulation (75%, p = 0.011) and increased vitality (53%, p = 0.001), introjected regulation (63%, p = 0.001), intrinsic regulation (33%, p = 0.004), and identified regulation (88%, p = 0.001). A moderate to strong positive relationship was found between adherence rate and identified regulation scores (r = 0.59, p = 0.001) and between VO2peak and identified regulation scores (r = 0.59, p = 0.001). A mild dissociation between exercise intensity and perceived exertion was also observed. Our novel findings suggest that a 10-month implementation of a high-intensity interval neuromuscular training program promotes positive psychological adaptations provoking exercise behavioral regulation and adherence while inducing weight loss in previously inactive obese women.

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