Key result
Six weeks of resistance training significantly increased pain perception and reduced systolic blood pressure in hypertensive women, whereas green tea extract supplementation had no significant additional effect on pain responses.
Why the study?
Changes in blood pressure may affect pain, but the interaction effect of resistance training and green tea on blood pressure and pain had not been studied.
Does the interaction of resistance training and green tea extract alter pain threshold and perception in sedentary hypertensive women?
RCT (n=30)
Double-blind
Randomly divided
No
Does the interaction of resistance training and green tea extract alter pain threshold and perception in sedentary hypertensive women?
p-value: p=0.018
Resistance training alters pain perception in hypertensive women, likely mediated by training-induced reductions in systolic blood pressure, whereas green tea extract provides no additional effect.
Resistance training heightens post-session pain perception in hypertensive women despite SBP reduction; confirms exercise effects but shows no green tea augmentation.
BACKGROUND: Changes in blood pressure (BP) may affect pain. However, the interaction effect of resistance training and green tea on BP and pain has not been studied. The primary aim of this study was to evaluate the impact of resistance training and green tea extract (GTE) on pain variables in hypertensive patients. Secondary aim included determining the effects of BP alterations on pain responses. METHODS: In a randomized, double-blind, placebo-controlled study, 30 middle-aged sedentary women were randomly divided into resistance training and green tea extract (GR, n = 8), resistance training (R, n = 8), green tea (G, n = 7), and control groups (C, n = 7). The study period consisted of 3 weeks of GTE (~ 245 mg total polyphenols) consumption twice a day followed by 6 weeks of interaction with resistance training. GR and R groups performed two circuits of training with ten repetitions at 50% of 1RM 2 days a week while other two groups had no any regular exercise training. R and C groups also received placebo capsules (maltodextrin) with the same timing. Pain threshold and perception, BP, and heart rate were recorded following the first and last session of training at rest and 5th and 15th minute. RESULTS: Pain perception of training groups after the last session was significantly higher than control conditions, and at this time, the magnitude of BP responses was lower in training groups. In proportion to pain threshold, there were no significant differences between groups. CONCLUSION: It seems that training-induced hypotension can alter pain perception in hypertensive women through changes in baroreceptor activation.
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Arazi et al. (2019) conducted an RCT in Hypertension (n=30). Resistance training and green tea extract vs. Control (placebo capsules and no regular exercise) was evaluated on Pain perception at 5th and 15th minute after the last training session (p=0.018). Six weeks of resistance training significantly increased pain perception and reduced systolic blood pressure in hypertensive women, whereas green tea extract supplementation had no significant additional effect on pain responses.
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