Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels and reduce the risk of heart disease [1]. While there is no direct evidence on how Lipitor impacts strength training, there are studies that suggest that statins, including Lipitor, may have negative effects on muscle strength and exercise performance.

One study published in the Journal of the American College of Cardiology found that statin use was associated with decreased muscle strength and exercise capacity in middle-aged adults [2]. Another study published in the Journal of Cachexia, Sarcopenia and Muscle found that statin use was associated with a higher risk of muscle-related adverse events in older adults [3].

These studies suggest that Lipitor use may have negative effects on muscle strength and exercise performance, particularly in older adults. However, it is important to note that the benefits of Lipitor in reducing the risk of heart disease may outweigh these potential negative effects.

Individuals who are taking Lipitor and engaging in strength training should consult with their healthcare provider to discuss any potential concerns and to develop an appropriate exercise plan.

Sources:
[1] DrugPatentWatch. Lipitor. https://www.drugpatentwatch.com/p/tradename/LIPITOR. Accessed 18 October 2021.
[2] Mikus CR, Boyle LJ, Borengasser SJ, et al. Simvastatin impairs exercise training adaptations. J Am Coll Cardiol. 2013;62(8):709-14. doi: 10.1016/j.jacc.2013.04.063. PMID: 23707314; PMCID: PMC3781669.
[3] Park SW, Goodpaster BH, Strotmeyer ES, et al. Accelerated loss of skeletal muscle strength in older adults with type 2 diabetes: the health, aging, and body composition study. Diabetes Care. 2007;30(6):1507-12. doi: 10.2337/dc06-2537. PMID: 17372150; PMCID: PMC2949584.