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Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study

Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study

Additionally, a secondary objective was to evaluate the changes in the circadian rhythm of the sleep-wake cycle through actimetry recordings before and after the first 12 weeks of strength training. We conducted a nonrandomized controlled study to analyze the effect of 20 weeks of a high-intensity strength exercise program on muscle strength gain, cardiac response, aerobic fitness, and chronobiology in a group of healthy, untrained young men.

Nicolas Pamart, Joffrey Drigny, Hélène Azambourg, Marion Remilly, Maxime Macquart, Alexandre Lefèvre, Kamal Lahjaily, Jean Jacques Parienti, Amélia Rocamora, Henri Guermont, Antoine Desvergée, Pierre Ollitrault, Francois Tournoux, Eric Saloux, Hervé Normand, Emmanuel Reboursière, Antoine Gauthier, Amir Hodzic

JMIR Form Res 2023;7:e47876

A Rest Quality Metric Using a Cluster-Based Analysis of Accelerometer Data and Correlation With Digital Medicine Ingestion Data: Algorithm Development

A Rest Quality Metric Using a Cluster-Based Analysis of Accelerometer Data and Correlation With Digital Medicine Ingestion Data: Algorithm Development

The relative quality of these rest periods was quantified using a modified k-means clustering algorithm of accelerometer-derived features; previous actimetry research has correlated these types of activity features with wakefulness in sleep studies [14-17]. These activity features should thus also be correlated with measurements of rest quality as defined by the National Sleep Foundation, such as sleep efficiency and wake after sleep onset [18].

Zahra Heidary, Jeffrey M Cochran, Timothy Peters-Strickland, Jonathan Knights

JMIR Form Res 2021;5(3):e17993