Acute Intraarterial Blood Pressure Response to Bench Press Weight Lifting in Children
Karen L Nau1, Victor L Katch1, Robert H Beekman1
1University of Michigan, Ann Arbor, MI 48109, USA.
Insights
Children
Area of Science:
- Pediatric Cardiology
- Exercise Physiology
- Sports Medicine
Background:
- Understanding the cardiovascular response to resistance exercise in children is crucial for safe training.
- Previous research has primarily focused on adult responses to weight lifting.
- Limited data exists on the specific blood pressure and heart rate dynamics during weight lifting in pediatric populations.
Purpose of the Study:
- To investigate the intraarterial blood pressure (BP) and heart rate (HR) response to bench press weight lifting (WL) in children.
- To compare the BP and HR responses across different intensities of weight lifting (60-100% of one-repetition maximum).
- To determine if the peak BP and HR responses occur at voluntary fatigue and if they are independent of resistance and repetition combinations.
Main Methods:
- Eleven children performed bench press weight lifting to voluntary fatigue at 60%, 75%, 90%, and 100% of their one-repetition maximum (1RM).
- Aortic systolic and diastolic pressures and heart rate were measured continuously during the weight lifting sessions.
- Data analysis focused on peak BP and HR values achieved during each lifting condition and at voluntary fatigue.
Main Results:
- Blood pressure and heart rate increased progressively as repetitions were completed within each weight lifting condition.
- Peak systolic pressures ranged from 162-177 mmHg, peak diastolic pressures from 125-139 mmHg, and peak heart rates from 139-148 bpm across conditions.
- Peak BP and HR were significantly higher during weight lifting compared to rest but did not significantly differ between the various intensity conditions.
- The relative blood pressure response in children was found to be similar to previously reported adult values.
Conclusions:
- Peak blood pressure and heart rate responses during weight lifting in children occur at the point of voluntary fatigue.
- These peak responses appear to be independent of the specific combination of resistance and repetitions used to achieve fatigue.
- The cardiovascular strain experienced by children during weight lifting is comparable to that of adults, highlighting the importance of appropriate training protocols.
Abstract:
Intraarterial blood pressure (BP) response to bench press weight lifting (WL) was evaluated in 11 children. Aortic systolic and diastolic pressures and heart rate (HR) were measured during WL. Baseline systolic and diastolic pressures were 120 and 81 mmHg, and HR was 86 bpm. Subjects lifted to voluntary fatigue weights equaling 60, 75, 90, and 100% of their predetermined one-repetition maximum (1RM). For each weight lifting condition, BP and HR increased as more repetitions were completed. Peak systolic pressure was 168, 177, 166, and 162 mmHg, peak diastolic pressure was 125, 139, 133, and 130 mmHg, and peak heart rate was 142, 148, 142, and 139 bpm at 60, 75, 90, and 100% 1RM, respectively. Peak BP and HR were greater during WL than rest but did not differ between conditions. The relative BP response to WL in children was similar to adult values. For all conditions, pressures increased as more repetitions were completed. It was concluded that peak pressures occur at voluntary fatigue, independent of the combination of resistance and repetitions used to achieve fatigue.
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