To analyze the autonomic behavior in recovery post-acute resistance exercise performed in different intensities and body segments.
Resistance training (RT) is recommended to people with different health condition. RT is recognized as safe and effective method of increasing muscle strength, physical fitness, muscle mass, and overall cardiovascular health. The magnitude of the RT effects is associated with the structure of the training program. Understanding these aspects may provide guidance for the RT prescription while reducing potential risk of cardiovascular events associated with the recovery period after exercise. The objective of the study is to compare the acute responses of the Autonomic Nervous System post RT performed with different intensities (endurance and strength) in different body segments (UL and LL). Our hypothesis is that different intensities and body segments influence the acute responses of the ANS in the post RT recovery period.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
49
UL endurance protocol - 2 series of 20 repetitions, elbow flexion at 40% of the maximum test force of 1 maximum repetition, (recovery 1 minutes between sets).
UL strength protocol - 2 series of 8 repetitions, elbow flexion at 80% of the maximum test force of 1 maximum repetition, (recovery 1 minutes between sets).
LL endurance protocol - 2 series of 20 repetitions, elbow flexion at 40% of the maximum test strength of 1 maximum repetition, (recovery 1 minutes between sets).
Luiz Carlos Marques Vanderlei
Presidente Prudente, São Paulo, Brazil
Universidade Estadual Paulista Júlio de Mesquita Filho
Presidente Prudente, São Paulo, Brazil
Acute responses of the Autonomic Nervous System post Resistance Training of the time-domain indices of Heart Rate Variability
Understand the effect of acute responses of the time-domain indices of Heart Rate Variability, RMSSD, and SDNN, comparing the behavior of these indices of in rest periods and immediate recovery after effort. Besides, to analyze the changes observed when applying different training intensities (endurance protocol 40% 1RM, and strength protocol 80% 1 RM) and body segments (elbow flexion \[UL\] and knee extension \[LL\]). RMSSD: root mean square of the successive differences between the RR intervals in the record, divided by the number of RR intervals in a given time minus one RR interval SDNN: standard deviation of all normal RR intervals.
Time frame: the moments before and immediately after Resistance Training, performed with different intensities (endurance and strength) and body segments (UL and LL).
Acute responses of the Autonomic Nervous System post Resistance Training of the geometric indices of Heart Rate Variability
Understand the effect of acute responses of the geometric indices of Heart Rate Variability, SD1, SD2, comparing the behavior of these indices of in rest periods and immediate recovery after effort. Besides, to analyze the changes observed when applying different training intensities (endurance protocol 40% 1RM, and strength protocol 80% 1 RM) and body segments (elbow flexion \[UL\] and knee extension \[LL\]). SD1: standard deviation of diagonal points SD2: standard deviation from longitudinal points
Time frame: the moments before and immediately after Resistance Training, performed with different intensities (endurance and strength) and body segments (UL and LL).
Acute responses of the Autonomic Nervous System post Resistance Training of the frequency domain of Heart Rate Variability,
Understand the effect of acute responses of the frequency domain of Heart Rate Variability, LF anf HF, both calculated in absolute (ms2) and normalized units (nu), comparing the behavior of these indices of in rest periods and immediate recovery after effort. Besides, to analyze the changes observed when applying different training intensities (endurance protocol 40% 1RM, and strength protocol 80% 1 RM) and body segments (elbow flexion \[UL\] and knee extension \[LL\]). LF: spectral components of low frequency, 0.04 - 0.15Hz HF: spectral components of high frequency, 0.15 - 0.40 Hz
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LL strength protocol - 2 series of 8 repetitions, knee extension at 80% of the maximum test force of 1 maximum repetition, (recovery 1 minutes between sets).
Time frame: the moments before and immediately after Resistance Training, performed with different intensities (endurance and strength) and body segments (UL and LL).