Contextual overview
To maximize the long-term metabolic 'afterburn' of a workout, high-intensity strength training is required. This research provides clear evidence that lifting heavy is superior for maintaining an elevated resting metabolic rate during recovery.
Original publication abstract
This 2017 study by Barboza-González et al. investigated how different intensities of resistance training affect resting energy expenditure (REE). Results showed that while both low (40% RM) and high (80% RM) intensity lifting increase metabolism immediately, only high-intensity lifting keeps REE elevated 24 hours later.
Check the original article for the population, device, protocol and limitations before applying its results to a different configuration.