APA (7th ed.) Citation

Grässler, B., Thielmann, B., Böckelmann, I., & Hökelmann, A. (2021). Effects of different exercise interventions on heart rate variability and cardiovascular health factors in older adults: A systematic review. European Review of Aging & Physical Activity, 18(1), 1. https://doi.org/10.1186/s11556-021-00278-6

Chicago Style (17th ed.) Citation

Grässler, Bernhard, Beatrice Thielmann, Irina Böckelmann, and Anita Hökelmann. "Effects of Different Exercise Interventions on Heart Rate Variability and Cardiovascular Health Factors in Older Adults: A Systematic Review." European Review of Aging & Physical Activity 18, no. 1 (2021): 1. https://doi.org/10.1186/s11556-021-00278-6.

MLA (9th ed.) Citation

Grässler, Bernhard, et al. "Effects of Different Exercise Interventions on Heart Rate Variability and Cardiovascular Health Factors in Older Adults: A Systematic Review." European Review of Aging & Physical Activity, vol. 18, no. 1, 2021, p. 1, https://doi.org/10.1186/s11556-021-00278-6.