Pamela LeBlanc; University of Calgary, Chloe Parezanovic; University of Calgary,
Denis Blondin; Université de Sherbrooke, André Carpentier; Université de Sherbrooke,
Lucie Vaillancourt; Université de Sherbrooke, David Campbell; University of Calgary
Both central and peripheral regulators of metabolism display circadian rhythmicity and are sensitive to circadian misalignment. Disruption of the body’s biological clocks is believed to contribute to metabolic outcomes such as insulin resistance, prediabetes and type 2 diabetes. Timing of behavioural interventions to enhance alignment with the circadian rhythm systems holds great promise to improve metabolic health. Uptake of lifestyle interventions requires assessment of both effectiveness and acceptability.
A qualitative descriptive study design was used to generate a comprehensive summary of the time restricted exercise intervention as experienced by participants. This study design involves minimal interpretation and stays close to the data as reported by the participants, detailing in their own words their thoughts, feelings and experience with the time restricted exercise intervention.
Semi-structured interviews were undertaken with study participants at the start of the 12-week exercise program and upon completion of the intervention. Participants (n=23), age range 43-70 years, were randomized into either morning or afternoon exercise sessions. Using a conventional qualitative content analysis approach, interview transcripts were analyzed for codes and collated into categories based on similarities and differences. The resulting groupings informed the generation of emerging themes.
Preliminary themes include preferred exercise timing and willingness to change, the need for credible health information, the role of teamwork in providing a safe and supportive environment, navigating one’s personal and social settings, and seeing the results and impact of time restricted exercise.