Does the combination of resistance training and stretching increase cardiac overload?

Abstract

OBJECTIVES: To compare the effects of combinations of resistance training (RT) and static stretching (SS) on heart rate (HR), systolic pressure (SBP), diastolic pressure (DBP), rate pressure product (RPP), oxygen saturation (SpO 2 ), rating of perceived effort (RPE), and heart rate variability (HRV) in men. METHODS: Twelve normotensive healthy men participated in four protocols: a) SS+RT, b) RT+SS, c) RT, and d) SS. Variables were measured before, immediately after, and 15, 30, and 45 min after the sessions. RESULTS: The combination of SS and RT increased ( p <0.001) HR when compared to the effects of the noncombined protocols (from 2.38 to 11.02%), and this result indicated metabolic compensation. Regarding DBP, there were differences ( p <0.001) between the RT and SS groups (53.93±8.59 vs . 67.00±7.01 mmHg). SS has been shown to be able to reduce ( p <0.001) SpO 2 (4.67%) due to the occlusion caused by a reduction in the caliber of the blood vessels during SS compared to during rest. The increase in RPP (6.88% between RT and SS+RT) along with the HR results indicated higher metabolic stress than that reflected by the RPE (combined protocols increased RPE from 21.63 to 43.25%). The HRV analysis confirmed these results, showing increases ( p <0.01) in the LF index between the combined and noncombined protocols. Compared to the effect of RT, the combination of SS and RT promoted a vagal suppression root mean square of the successive differences (RMSSD) index (from 9.51 to 21.52%) between the RT and SS+RT groups ( p <0.01) and between the RT and RT+SS groups ( p <0.001). CONCLUSION: Static stretching increases cardiac overload and RPE, reducing oxygen supply, especially when performed in combination with RT.

Acute effects of different static stretching exercises orders on cardiovascular and autonomic responses

“…12 reported that SS exercises increase heart overload, elevating HR and RPP, which is consistent with our findings. In addition, previous studies 6,7,37 demonstrated that pre-exercise SS causes impairment in the performance of activities requiring strength, and may decrease the supply of oxygen to the stretched muscle 5 , suggesting that negative effects can generate metabolic and autonomic compensations 38 . In addition, Farinatti et al .…”

Effect of milk protein concentrate supplementation on body composition and biochemical markers during a resistance training program

“…The participants in the IG group were supplemented with the MPC during 90 days of RT (six sessions per week). RT was performed in both groups, with four exercises for each muscle group, (four sets of eight repetitions (American College of Sports Medicine, 2009) and 2 minutes interval between sets and exercises (Silva et al, 2019) and intensity of 80% maximal repetition (1RM) (Simão et al, 2007). 1RM tests and re-tests were performed according to the protocol proposed by Simão et al (2022).…”

Stretching Exercise as a Rehabilitation Modality for Hypertension: A Brief Review

“…In all the above studies 12,13,14,15 , no definitive conclusion could be drawn for forming a definite protocol of stretching exercise in patients of hypertension as all the above studies were carried out in normotensive individuals. Also, studies have not educated patients for Valsalva maneuver during stretching, which is known to increase blood pressure and heart rate as supported by previous studies.…”