Abstract
No previous studies have examined the effects of isometric training intensity upon resting blood pressure (BP). The aims of this study were (a) to compare the effects of leg isometric training, performed at two intensities, upon resting systolic-SBP, diastolic-DBP and mean arterial-MAP BP; and (b) to examine selected cardiovascular variables, in an attempt to explain any changes in resting BP following training. Thirty-three participants were randomly allocated to either control, high- (HI) or low-intensity (LI) training for 8 weeks. Participants performed 4 × 2 min exercise bouts 3× weekly. Resting BP was measured at baseline, 4-weeks and post-training. SBP, DBP and MAP fell significantly in both groups after training. Changes were –5.2 ± 4.0, –2.6 ± 2.9 and –2.5 ± 2.2 mmHg [HI]; –3.7 ± 3.7, –2.5 ± 4.8 and –2.6 ± 2.5 mmHg [LI] for SBP, DBP and MAP, respectively. There were no significant changes in BP at 4 weeks. No significant changes were observed in any of the other cardiovascular variables examined. These findings suggest that isometric training causes reductions in SBP, DBP and MAP at a range of exercise intensities, when it is performed over 8 weeks. Furthermore, it is possible to reduce resting BP using a much lower isometric exercise intensity than has previously been shown.
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References
Carter JR, Ray CA, Downs EM, Cooke WH (2003) Strength training reduces arterial blood pressure but not sympathetic neural activity in young normotensive subjects. J Appl Physiol 94:2212–2216. doi:10.1063/1.1594276
Chaney RH (1981) Comparison of blood pressure and rate-pressure product responses in maximal dynamic and isometric exercise. Ann Acad Med 101:7–10
Cram JR, Kasman GS, Holtz J (1998) Introduction to surface electromyography. Aspen publishers Inc, Maryland
Damgaard M, Norsk P (2005) Effects of ventilation on cardiac output determined by inert gas rebreathing. Clin Physiol Funct Imaging 25:142–147. doi:10.1111/j.1475-097X.2005.00602.x
Eckberg DL, Fletcher GF, Braunwald E (1972) Mechanisms of prolongation of the R-R interval with electrical stimulation of the carotid sinus nerves in man. Circ Res 30:131–138
Field A (2000) Discovering statistics: using SPSS for windows. Sage, London
Fowler AC, McGuinness MJ (2005) A delay recruitment model of the cardiovascular control system. J Math Biol 55:508–526. doi:10.1007/s00285-005-0339-1
Franke WD, Boettger MCF, Mclean SP (2000) Effects of varying central command and muscle mass on the cardiovascular responses to isometric exercise. Clin Physiol 20:380–387. doi:10.1046/j.1365-2281.2000.00273.x
Fujisawa H, Kamimura H, Ohtsuka Y, Nanbu T, Yabunaka N, Agis Y (1996) Continuous measurement of blood pressure, heart rate and left ventricular performance during and after isometric exercise head-out water immersion. Eur J Appl Physiol Occup Physiol 72:548–552. doi:10.1007/BF00242289
Gilman MB, Wells CL (1993) The use of heart rates to monitor exercise intensity in relation to metabolic variables. Int J Sports Med 14:339–344. doi:10.1055/s-2007-1021189
Grassi G, Mancia G (2004) Neurogenic hypertension: is the enigma of its origin near the solution? Hypertension 43:154–155. doi:10.1161/01.HYP.0000109870.99110.7e
Green DJ, Maiorana A, O’Driscoll G, Taylor RR (2004) Effect of exercise training on endothelium-derived nitric oxide function in humans. J Physiol 561:1–25. doi:10.1113/jphysiol.2004.068197
Hermens HJ, Frericks B, Disselhorst-Klug C, Rau G (2000) Development of recommendations for SEMG sensors and sensor placement procedures. J Electromyogr Kinesiol 10:361–374. doi:10.1016/S1050-6411(00)00027-4
Howden R, Lightfoot JT, Brown ST, Swaine IL (2002) The effects of isometric exercise training on resting blood pressure and orthostatic tolerance in humans. Exp Physiol 87:507–515
Julius S, Majahalme S (2000) The changing face of sympathetic over-activity in hypertension. Ann Med 32:365–370. doi:10.3109/07853890008995939
Kamath MV, Fallen EL (1993) Power spectral analysis of heart rate variability: a non-invasive signature of cardiac autonomic function. Crit Rev Biomed Eng 21:245–311
Karvonen J, Vuorimaa T (1988) Heart rate and exercise intensity during sports activities: practical application. Sports Med 5:303–311. doi:10.2165/00007256-198805050-00002
Kenney MJ, Seals DR (1993) Post exercise hypotension. Key features, mechanisms, and clinical significance. Hypertension 22:653–664
Kiveloff B, Huber O (1971) Brief maximal isometric exercise in hypertension. J Am Geriatr Soc 9:1006–1012
Lewis SF, Snell PG, Taylor WF, Hamra M, Graham RM, Pettinger WA, Blomqvist CG (1985) Role of muscle mass and mode of contraction in circulatory responses to exercise. J Appl Physiol 58:146–151. doi:10.1063/1.335700
Magnusson S, Geismar RA, Gleim GW, Nicholas JA (1993) The effect of stabilisation on isokinetic knee extension and flexion torque production. J Athl Train 28:51–52
McGowan CL, Visocchi A, Faulkner M, Rackobowchuk M, McCartney N, MacDonald MJ (2004) Isometric handgrip training improves blood pressure and endothelial function in persons medicated for hypertension. APS Intersociety Meeting: integrative biology of exercise—abstracts of invited and contributed presentation. Physiologist 47:285
McGowan CL, Levy AS, Millar PJ, Guzman JC, Morillo CA, McCartney N, MacDonald MJ (2006a) Acute vascular responses to isometric handgrip exercise and the effects of training in persons medicated for hypertension. Am J Physiol 291:H1797–H1802
McGowan CL, Visocchi A, Faulkner M, Verduyn R, Rackobowchuk M, Levy AS, McCartney N, MacDonald MJ (2006b) Isometric handgrip training improves local flow mediated dilation in medicated hypertensives. Eur J Appl Physiol 98:355–362. doi:10.1007/s00421-006-0282-x
McGowan CL, Levy AS, McCartney N, MacDonald MJ (2007) Isometric handgrip training does not improve flow-mediated dilatation in subjects with normal blood pressure. Clin Sci 112:403–409. doi:10.1042/CS20060195
Millar PJ, Bray SR, McGowan CL, MacDonald MJ, McCartney N (2007) Effects of isometric handgrip training among people medicated for hypertension: a multilevel analysis. Blood Press Monit 12:307–314
Millar PJ, Bray SR, MacDonald MJ, McCartney N (2008) The hypotensive effects of isometric handgrip training using an inexpensive spring handgrip training device. J Cardiopulm Rehabil Prev 28:203–207
Misner JE, Going SB, Massey BH, Ball TE, Bemben MG, Essandoh LK (1990) Cardiovascular response to sustained maximal voluntary static muscle contraction. Med Sci Sports Exerc 22:194–199
O’Leary DS (1996) Heart rate control during exercise by baroreceptors and skeletal muscle afferents. Med Sci Sports Exerc 28:210–217. doi:10.1097/00005768-199602000-00009
O’Leary DS, Seamans DP (1993) Effect of exercise on autonomic mechanisms of baroreflex control of heart rate. J Appl Physiol 75:2251–2257
Ogoh S, Fadel PJ, Nissen P, Jans O, Selmer C, Secher NH, Raven PB (2003) Baroreflex-mediated changes in cardiac output and vascular conductance in response to alterations in carotid sinus pressure during exercise in humans. J Physiol 550:317–324. doi:10.1113/jphysiol.2003.041517
Pagani M, Lombardi F, Guzzetti S, Rimoldi O, Furlan R, Pizzineli P, Sandrone G, Malfatto G, Dell’Orto S, Piccaluga E, Turiel M, Baselli G, Cerutti S, Malliani A (1986) Power spectral analysis of heart rate and arterial pressure variabilities as a marker of sympatho-vagal interaction in man and conscious dog. Circ Res 59:178–193
Perkins GM, Owen A, Swaine IL, Wiles JD (2006) Relationships between pulse wave velocity and heart rate variability in healthy men with a range of moderate-to-vigorous physical activity levels. Eur J Appl Physiol 98:516–523. doi:10.1007/s00421-006-0303-9
Ray CA, Carrasco DI (2000) Isometric handgrip training reduces arterial pressure at rest without changes in sympathetic nerve activity. Am J Physiol 279:H245–H249
Rowell LB (1993) Human cardiovascular control. Oxford University Press, Oxford
Schibye B, Mitchell JH, Payne FC, Saltin B (1981) Blood pressure and heart rate response to static exercise in relation to electromyographic activity and force development. Acta Physiol Scand 113:61–66. doi:10.1111/j.1748-1716.1981.tb06862.x
Seals DR (1993) Influence of force on muscle and skin sympathetic nerve activity during sustained isometric contractions in humans. J Physiol 462:147–159
Skinner JS, Wilmore KM, Krasnoff JB, Jaskólski A, Jaskólska A, Gagnon J, Province MA, Leon AS, Rao DC, Wilmore JH, Bouchard C (2000) Adaptation to a standardized training program and changes in fitness in a large, heterogeneous population: the HERITAGE Family Study. Med Sci Sports Exerc 32:157–161. doi:10.1097/00005768-200001000-00023
Smolander J, Aminoff T, Korhonen I, Tervo M, Shen N, Korhonen O, Louhevaara V (1998) Heart rate and blood pressure responses to isometric exercise in young and older men. Eur J Appl Physiol 77:439–444. doi:10.1007/s004210050357
Swain DP, Abernathy KS, Smith CS, Lee SJ, Bunn SA (1994) Target heart rates for the development of cardiorespiratory fitness. Med Sci Sports Exerc 26:112–116
Taylor AC, McCartney N, Kamath MV, Wiley RL (2003) Isometric training lowers resting blood pressure and modulates autonomic control. Med Sci Sports Exerc 35:251–256. doi:10.1249/01.MSS.0000048725.15026.B5
Turner MJ, Tanaka H, Bassett DR Jr, Fitton TR (1996) The equilibrium CO2 rebreathing method does not affect resting or exercise blood pressure. Med Sci Sports Exerc 28:921–925. doi:10.1097/00005768-199607000-00021
Visocchi A, McGowan C, Faulkner M, Verduyn R, McCartney N, McDonald M (2004) The effect of isometric arm or leg exercise on resting blood pressure and arterial distensibility in persons medicated for hypertension. APS Intersociety Meeting: integrative biology of exercise—abstracts of invited and contributed presentation. Physiologist 47:285
Walker AJ, Bassett DR Jr, Duey WJ, Howley ET, Bond V, Torok DT, Mancuso P (1992) Cardiovascular and plasma catecholamine response to exercise in blacks and whites. Hypertension 20:542–548
Wiles JD, Allum S, Coleman DA, Swaine IL (2008) The relationships between heart rate, blood pressure and exercise intensity during an incremental isometric exercise test. J Sports Sci 26:155–162. doi:10.1080/02640410701370655
Wiley RL, Dunn CL, Cox RH, Hueppchen NA, Scott MS (1992) Isometric exercise training lowers resting blood pressure. Med Sci Sports Exerc 24:749–754. doi:10.1249/00005768-199207000-00003
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Wiles, J.D., Coleman, D.A. & Swaine, I.L. The effects of performing isometric training at two exercise intensities in healthy young males. Eur J Appl Physiol 108, 419–428 (2010). https://doi.org/10.1007/s00421-009-1025-6
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DOI: https://doi.org/10.1007/s00421-009-1025-6