Pressor Response to Static and Dynamic Knee Extensions at Equivalent Workload in Humans

Koba, Shinji; Hayashi, Naoyuki; Miura, Akira; Endo, Mitsuharu; Fukuba, Yoshiyuki; Yoshida, Takayoshi

doi:10.2170/jjphysiol.54.471

Cited by 18 publications

(29 citation statements)

References 26 publications

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“…Previous studies suggest that HTN humans have an elevated BP response to isometric handgrip exercise (Aoki et al 1983;Kazatani et al 1995). It has been shown that during isometric exercise, there is decreased arterial blood Xow (compared to dynamic exercise) which would presumably allow for an increase in metabolite accumulation, and diVerences in BP between NTN and HTN subjects to be observed (Koba et al 2004). The absolute BP during dynamic handgrip exercise was higher in the HTN subjects compared to the NTN subjects (see Table 2).…”

Section: Discussionmentioning

confidence: 99%

Enhanced metaboreflex sensitivity in hypertensive humans

et al. 2008

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The exercise pressor reflex (EPR) is composed of the mechanoreflex and the metaboreflex and has been shown to be overactive in spontaneously hypertensive rats. The aim of the present study was to isolate the metaboreflex using post-exercise ischemia (PEI) and examine the BP response in normotensive (NTN) and hypertensive (HTN) humans. We hypothesize that the post-exercise ischemia-induced maintenance of BP will be greater in HTN when compared to NTN adults. A total of 15 NTN (65 +/- 1 years) and 12 HTN (64 +/- 1 years) adults were recruited. Beat-to-beat mean arterial pressure (MAP) was measured non-invasively (Finometer). Dynamic handgrip exercise (DHE) was performed for 3 min followed by 2 min of PEI. An unpaired t test was used to examine differences between groups. As compared to resting baseline values, the change in MAP during PEI was greater in HTN than NTN subjects (HTN: Delta = 12 +/- 3 mmHg, NTN: Delta = 6 +/- 1 mmHg, P < 0.05). These data suggest that HTN humans have enhanced metaboreflex sensitivity.

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Section: Discussionmentioning

confidence: 99%

Enhanced metaboreflex sensitivity in hypertensive humans

et al. 2008

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“…This method is often used in order to obtain the benefits of vascular occlusion (15)(16)20) , since isometric actions are known to be effective in interrupting blood flow and accumulating metabolites (21)(22) . 7) Super-slow method (SL): It was performed one set comprising one 60-second repetition with 30 seconds for both eccentric and concentric phases.…”

Section: Resistance Training Methods (Rtm)mentioning

confidence: 99%

Efeitos agudos de vários métodos de treinamento de força no lactato sanguíneo e características de cargas em homens treinados recreacionalmente

Gentil

Oliveira

Fontana

et al. 2006

Rev Bras Med Esporte

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Several resistance training methods (RTM) have been developed in order to manipulate physiological stimuli and obtain better results with training. The purpose of this study is to compare the metabolic and mechanical responses among seven different RTM reported in the literature. The RTM were compared with regard to blood lactate, time under tension (TUT) and total loading (TUT x load) in recreationally trained young men. The RTM tested were 10RM (TEN), super-slow (SL), functional isometrics (FI), adapted vascular occlusion (VO), 6RM (SIX), forced repetitions (FR) and breakdowns (BD). All RTM produced significant increases in blood lactate, with no difference among them. The BD method elicited higher TUT and total loading compared to the other RTM tested.

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“…This occurs in the first 10 seconds of exercise 2 . Depending on the intensity and duration of the isometric contraction performed, the HR increases gradually, especially due to the sympathetic modulation of the ANS [2][3][4][5][6][7] . Some studies have reported that the improvements on muscle strength and the resistance training are safe for lowrisk patients [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%