// Workers AI · dad joke modeWhat did cardiovascular drift say to exercise? You're draining me.
| Cardiovascular drift | |
|---|---|
| Specialty | Cardiology |
Cardiovascular drift (CVD, CVdrift) is the phenomenon where some cardiovascular responses begin a time-dependent change, or "drift", after around 5–10 minutes of exercise in a warm or neutral environment without an increase in workload.[1][2] It is characterized by a progressive increase in heart rate accompanied by a decrease in stroke volume, while cardiac output is generally maintained through compensatory increases in heart rate.[1][2] Depending on environmental conditions, exercise intensity, and hydration status, mean arterial pressure may remain relatively stable or decrease slightly during prolonged exercise.[1][2] Reductions in stroke volume are largely attributable to increases in internal core temperature and reductions in central blood volume associated with dehydration and the accompanying cutaneous vasodilation.[1][2] To facilitate heat dissipation, blood flow to the skin increases during prolonged exercise, promoting a redistribution of blood volume toward the cutaneous circulation and contributing to reductions in central venous return and stroke volume.[1][2] The resulting reduction in stroke volume is largely compensated by a progressive increase in heart rate, thereby maintaining cardiac output over a wide range of exercise intensities.[1][2] In warm environments, cardiovascular drift is associated with a reduction in maximal oxygen uptake measured immediately after the prolonged exercise bout,[3][4] an effect that can be attenuated by adequate body cooling[4] or by adapting exercise intensity.[3]
Implications for exercise prescriptions and monitoring
[edit]Cardiovascular drift also has important implications for exercise prescription and monitoring.[5][6][7] During constant-speed or constant-power exercise, the progressive increase in heart rate causes exercise intensity expressed as heart rate to drift upward over time. Conversely, when exercise intensity is prescribed by maintaining a constant heart rate (heart rate-clamped exercise), external workload (such as running speed or cycling power output) must be progressively reduced to compensate for the cardiovascular drift. Experimental studies have shown that heart rate-clamped exercise therefore produces lower external workload and oxygen uptake than constant-speed or constant-power exercise performed at the same initial physiological intensity.[5][6][7] Recent randomized evidence suggests that these acute differences may also influence long-term training adaptations.[7] In previously inactive adults, endurance training prescribed using constant running speed produced greater improvements in peak running speed and maximal oxygen uptake than training prescribed using a constant heart-rate target, despite identical initial exercise intensity prescriptions.[7]
References
[edit]- 1 2 3 4 5 6 Wingo JE, Ganio MS, Cureton KJ (April 2012). "Cardiovascular drift during heat stress: implications for exercise prescription". Exercise and Sport Sciences Reviews. 40 (2): 88–94. doi:10.1097/JES.0b013e31824c43af. PMID 22410803. S2CID 205712752.
- 1 2 3 4 5 6 Souissi A, Haddad M, Dergaa I, Ben Saad H, Chamari K (December 2021). "A new perspective on cardiovascular drift during prolonged exercise". Life Sciences. 287 120109. doi:10.1016/j.lfs.2021.120109. PMID 34717912. S2CID 240206941.
- 1 2 Wingo, Jonathan E.; Lafrenz, Andrew J.; Ganio, Matthew S.; Edwards, Gaylen L.; Cureton, Kirk J. (February 2005). "Cardiovascular Drift Is Related to Reduced Maximal Oxygen Uptake during Heat Stress:". Medicine & Science in Sports & Exercise. 37 (2): 248–255. doi:10.1249/01.MSS.0000152731.33450.95. ISSN 0195-9131.
- 1 2 Wingo, Jonathan E.; Cureton, Kirk J. (September 2006). "Body cooling attenuates the decrease in maximal oxygen uptake associated with cardiovascular drift during heat stress". European Journal of Applied Physiology. 98 (1): 97–104. doi:10.1007/s00421-006-0249-y. ISSN 1439-6319.
- 1 2 Zuccarelli, Lucrezia; Porcelli, Simone; Rasica, Letizia; Marzorati, Mauro; Grassi, Bruno (August 2018). "Comparison between Slow Components of HR and V˙O2 Kinetics: Functional Significance". Medicine & Science in Sports & Exercise. 50 (8): 1649–1657. doi:10.1249/MSS.0000000000001612. ISSN 1530-0315.
- 1 2 Succi, Pasquale J.; Dinyer-McNeely, Taylor K.; Voskuil, Caleb C.; Abel, Mark G.; Clasey, Jody L.; Bergstrom, Haley C. (December 2023). "Responses to Exercise at the Critical Heart Rate vs. the Power Output Associated With the Critical Heart Rate". Journal of Strength & Conditioning Research. 37 (12): 2362–2372. doi:10.1519/JSC.0000000000004547. ISSN 1064-8011.
- 1 2 3 4 Mazzolari, Raffaele; Rodrigues, Patrick; Hecksteden, Anne (October 2025). "Tailoring exercise intensity: Acute and chronic effects of constant-speed and heart rate-clamped exercise in healthy, inactive adults". Journal of Science and Medicine in Sport. 28 (10): 849–857. doi:10.1016/j.jsams.2025.04.007. ISSN 1440-2440.
Further reading
[edit]- McArdle W, Katch F, Katch V (2007). Exercise physiology: energy, nutrition, and human performance (6th ed.). Lippincott Williams & Wilkins.
- Cerny F, Burton H (2001). Exercise physiology for health care professionals. Human Kinetics.
- Kounalakis SN, Nassis GP, Koskolou MD, Geladas ND (September 2008). "The role of active muscle mass on exercise-induced cardiovascular drift". Journal of Sports Science & Medicine. 7 (3): 395–401. PMC 3761905. PMID 24149908.
- Maher M (24 August 2012). Cardiac Drift and Ironman Performance. Multisport Solutions.