Trunk Muscle Aerobic Metabolism Responses in Endurance Athletes, Combat Athletes and Untrained Men

Abstract

This study investigated aerobic metabolism responses in trunk muscles during a prolonged trunk extension exercise in athletes and untrained young men. The aim was to analyze the adaptations induced by 2 types of sports: one involving intensive use of trunk muscles (i. e., judo), and one known to induce high aerobic capacity in the whole body (i. e., cycling). Eleven judokas, 10 cyclists and 9 healthy untrained young men performed trunk extension exercises on an isokinetic dynamometer. During the first session, muscle strength was assessed during maximal trunk extension. During a second session, a 5-min exercise was performed to investigate aerobic responses with regard to trunk muscles. The near infrared spectroscopy technique and a gas exchange analyzer were used continuously to evaluate mechanical efficiency, V̇O2 on-set kinetics, trunk muscle deoxygenation and blood volume. Judokas showed greater trunk strength and mechanical efficiency (p<0.05). Cyclists presented faster V̇O2 on-set kinetics (p<0.05) and greater muscle deoxygenation and blood volume compared to untrained men (p<0.001). These results suggest that practicing judo improves trunk extension efficiency whereas cycling accelerates aerobic pathways and enhances microvascular responses to trunk extension exercise. Sport practice improves aerobic metabolism responses in trunk extensor muscles differently, according to the training specificities.

Physiological criteria of functional fitness and determinants of physical work capacity of highly skilled wrestlers

“…Being the components of athlete fitness general structure, parameters of physical development [1], physical [1,3,37] and functional [3,4,18,35] fitness, special work capacity [9][10][11]36] are characterized by different relationships and interactions in athletes of various skill level [2], different weight categories [3] and in the process of their sports mastery alteration [37][38][39][40].…”

“…According to researchers reserves of anaerobic alactate, anaerobic lactacidal and aerobic energy supply systems represent the key integral indices of FF [5][6][7]. Some works show that the level of development and association of the key components of combat athlete FS tend to determine the level of their special work capacity [8][9][10][11].…”

Benefits of a four-week functional restoration program in chronic low back pain patients and three-month follow-up: focus on paraspinal muscle aerobic metabolism responses to exercise

“…Patients then performed a five-minute isokinetic submaximal trunk extension exercise, corresponding to a constant setting torque of 80 nm, as described previously. 19 It has been established that five minutes were sufficient to permit a fully aerobic metabolic contribution, and that 80 nm corresponds to a performable and submaximal exercise level for CLBP patients (unpublished data). During this exercise, a biofeedback diagram was displayed in real time, showing the produced torque.…”

Technical-Tactical Behaviors Analysis of Male and Female Judo Cadets’ Combats

“…In the same way, the gripping demand that occurs in the senior class shows specifics tactical arrangements with stances opposite from their opponents (kenka-yotsu) to preserve a defensive situation preceding to attack or counter-attack (Ito et al, 2019). A recent research suggested that motor action analysis in judo be conducted with consideration for sex modifications in senior combat actions with a wide range of interconnected behavior components (Sterkowicz-Przybycien et al, 2017), such as the approach action (Sterkowicz-Przybycien et al, 2017), attack with the type of technique (Anthierens et al, 2019), groundwork attempts (Brito et al, 2017) and pause phase analysis (Sterkowicz-Przybycien et al, 2017). Currently, the specific behaviors of each gender in cadet class remain unknown; this knowledge is essential to target technical-tactical training, considering each combat phase.…”