Hip osteoarthritis has been associated with reduced hip abduction strength, which is indicative of gluteus medius weakness (Arokoski et al. 2002; Rasch et al. 2007; Suetta et al. 2007) as well as with compensatory increased gluteus medius muscle activity (Sims et al. 2002; Dwyer et al. 2013). (strengthandconditioningresearch.com)
Participants in the placebo arm had a compensatory increase in bone formation, which was an expected result, but bone formation was flat in the treatment arm. (sciencedaily.com)
The researchers noted that this would «normally trigger a compensatory increase in [heart rate to maintain cardiac output], but it did not.» (washingtonpost.com)