| المؤلفون: |
Lu X; College of Physical Education, Hubei Normal University, Huangshi, People's Republic of China.; Shenzhen Nanshan Qianhai Era No.2 Kindergarten, Shenzhen, People's Republic of China., Goulding RP; Department of Human Movement Sciences, Faculty of Behavioral and Human Movement Sciences, Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands., Mündel T; Department of Kinesiology, Brock University, St. Catharines, Ontario, Canada., Schlader ZJ; Department of Kinesiology, Indiana University School of Public Health Bloomington, Bloomington, Indiana, United States., Cotter JD; School of Physical Education, Sport and Exercise Sciences, University of Otago, Dunedin, New Zealand., Koga S; Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan., Fujii N; Faculty of Sport and Sciences, University of Tsukuba, Tsukuba, Japan., Wang IL; College of Physical Education, Hubei Normal University, Huangshi, People's Republic of China., Liu Z; College of Physical Education, Hubei Normal University, Huangshi, People's Republic of China., Li HY; College of Physical Education, Hubei Normal University, Huangshi, People's Republic of China., Wang H; Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan., Zheng H; Centre for Translational Research, University of Otago, Wellington, New Zealand., Kondo N; Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan., Gu CY; College of Physical Education, Hubei Normal University, Huangshi, People's Republic of China., Lei TH; College of Physical Education, Hubei Normal University, Huangshi, People's Republic of China., Wang F; Centre for Molecular Biosciences and Non-Communicable Diseases, Xi'an University of Science and Technology, Xi'an, China. |
| مستخلص: |
Postexercise reduction in blood pressure, termed postexercise hypotension (PEH), is relevant for both acute and chronic health reasons and potentially for peripheral cardiovascular adaptations. We investigated the interactive effects of exercise intensity and recovery postures (seated, supine, and standing) on PEH. Thirteen normotensive men underwent a V̇o 2max test on a cycle ergometer and five exhaustive constant load trials to determine critical power (CP) and the gas exchange threshold (GET). Subsequently, work-matched exercise trials were performed at two discrete exercise intensities (10% > CP and 10% < GET), with 1 h of recovery in each of the three postures. For both exercise intensities, standing posture resulted in a more substantial PEH (all P < 0.01). For both standing and seated recovery postures, the higher exercise intensity led to larger reductions in systolic [standing: -33 (11) vs. -21 (8) mmHg; seated: -34 (32) vs. -17 (37) mmHg, P < 0.01], diastolic [standing: -18 (7) vs. -8 (5) mmHg; seated: -10 (10) vs. -1 (4) mmHg, P < 0.01], and mean arterial pressures [-13 (8) vs. -2 (4) mmHg, P < 0.01], whereas in the supine recovery posture, the reduction in diastolic [-9 (9) vs. -4 (3) mmHg, P = 0.08) and mean arterial pressures [-7 (5) vs. -3 (4) mmHg, P = 0.06] was not consistently affected by prior exercise intensity. PEH is more pronounced during recovery from exercise performed above CP versus below GET. However, the effect of exercise intensity on PEH is largely abolished when recovery is performed in the supine posture. NEW & NOTEWORTHY The magnitude of postexercise hypotension is greater following the intensity above the critical power in a standing position. |
