Voluntary breathing increases corticospinal excitability of lower limb muscle during isometric contraction

Shirakawa, Kazuki; Yunoki, Takahiro; Afroundeh, Roghayyeh; Lian, Chang-shun; Matsuura, Ryouta; Ohtsuka, Yoshinori; Yano, Toshiaki

doi:10.1016/j.resp.2015.07.003

Cited by 14 publications

(7 citation statements)

References 35 publications

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“…Finger flexors also showed a slight effect, but the result was not significant. Previous research using transcranial magnetic stimulation has shown that fast inspiration and expiration could increase motor-evoked potentials in the vastus lateralis, abductor pollicis brevis, first dorsal interosseous, abductor digiti minimi, FDS, and extensor incidis muscles (38–40). These findings suggested that respiration could widely modulate corticospinal excitability for various muscles in both upper and lower limbs.…”

Section: Discussionmentioning

confidence: 99%

Motor–Respiratory Coupling Improves Endurance Performance during Rhythmic Isometric Handgrip Exercise

LI,

LIN

et al. 2023

Medicine &Amp; Science in Sports &Amp; Exercise

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Purpose This study aimed to evaluate whether motor-respiratory coupling (MRC) exists in rhythmic isometric handgrip exercises and its effect on endurance performance. Additionally, the mechanism underlying observed effects was to be investigated if higher MRC rate could enhance endurance performance. Methods Eleven subjects completed three rhythmic isometric handgrip trials to task failure in a randomized manner. After one pre-training session to determine personal grip frequency, one trial was performed without respiration requirement (CON), and two trials were performed with inspiration-motor coupling (IMC) or expiration-motor coupling (EMC). Changes in maximal voluntary contraction (MVC) and electromyography (EMG) were used to measure neuromuscular fatigue. Force data during test was used to assess exercise intensity. Another ten subjects completed electrical stimulation induced finger flexion and extension during normal inspiration (NIN), normal expiration (NEX), fast inspiration (FIN), fast expiration (FEX) and breath holding (HOLD). Force changes of different breathing conditions were compared. Results Normalized exercise time to exhaustion was significantly longer in IMC (1.27 ± 0.23) compared with EMC (0.82 ± 0.18) and CON (0.91 ± 0.18, P < 0.001). ΔMVC, grip frequency, force, and EMG indices were not different among conditions (all P > 0.05). Electrical stimulation induced finger extensor force was significant higher during fast inspiration (1.11 ± 0.09) than normal respiration (1.00 ± 0.05) and fast expiration (0.94 ± 0.08, P < 0.05). Conclusions Inspiration-motor coupling is an effective way to improve endurance performance of rhythmic handgrip exercise. This is likely due to a reduction in the energy consumption of motion control, as evidenced by similar peripheral fatigue in different conditions and modulation of corticospinal excitability by respiration.

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Section: Discussionmentioning

confidence: 99%

Motor–Respiratory Coupling Improves Endurance Performance during Rhythmic Isometric Handgrip Exercise

LI,

LIN

et al. 2023

Medicine &Amp; Science in Sports &Amp; Exercise

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“…Unlike NB controlled by the brainstem, voluntary breathing involves the activation of the cerebral cortex [26]. The change in the activity of the motor area by voluntary breathing can affect the movement of the trunk and extremities [27]. These effects can interfere with the APA ability to maintain balance, even in healthy young adults.…”

Section: Discussionmentioning

confidence: 99%

Impact of Types of Breathing on Static Balance Ability in Healthy Adults

Kim

Shin

Cho

2022

IJERPH

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Recent studies have suggested that breathing type may affect balance ability. However, most of these studies were conducted on the elderly and patients with musculoskeletal or neurological disorders. Therefore, the effect of voluntary breathing, such as thoracic and abdominal breathing, on the balance ability of people in various age groups is not clearly understood. The purpose of this study was to investigate the differences in balance ability according to the type of breathing in healthy young adults. This study included 78 healthy, young adults. All subjects were assessed for balance ability in neutral breathing, thoracic breathing, and abdominal breathing through a crossover design. Balance ability was assessed during static standing using a force plate. Participants were trained in voluntary breathing, evaluated using electromyography. During voluntary breathing, sway velocity, anterior-posterior difference, and anterior-posterior standard deviation increased while anterior-posterior sample entropy decreased compared to neutral breathing (p < 0.05). Compared with thoracic breathing, abdominal breathing increased sway velocity and variability, and reduced complexity (p < 0.05). These findings show that balance ability is affected by breathing, even in healthy young adults.

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“…As for the functional implications of our two respiratory conditions, previous studies have employed motor evoked potentials (MEP) to demonstrate heightened corticospinal excitability in control of lower limb (Shirakawa et al, 2015) and finger muscles (Li & Rymer, 2011) during automatic (vs forced) breathing. Our results critically extend these results by showing that, on the cortical level, this enhancement is conceivably implemented by means of increased sensorimotor beta coherence during automatic breathing.…”

Section: Discussionmentioning

confidence: 99%

Tidal volume and respiration phase modulate cortico-muscular communication

Kluger

Groß

2020

Preprint

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Recent studies in animals have convincingly demonstrated that respiration cyclically modulates oscillatory neural activity across diverse brain areas. To what extent this generalises to humans in a way that is relevant for behaviour is yet unclear. We used magnetoencephalography (MEG) to assess the potential influence of tidal volume and respiration phase on the human motor system. We obtained simultaneous recordings of brain activity, muscle activity, and respiration while participants performed an isometric contraction task. We used corticomuscular coherence as a measure of efficient long-range cortico-peripheral communication.We found coherence within the beta range over sensorimotor cortex to be reduced during voluntary deep compared to involuntary normal breathing. Moreover, beta coherence was found to be cyclically modulated by respiration phase in both conditions. Overall, these results demonstrate how respiratory rhythms actively influence brain oscillations in an effort to synchronise neural activity for the sake of computational efficiency. Intriguing questions remain with regard to the shape of these modulatory processes and how they influence perception, cognition, and behaviour.

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Voluntary breathing increases corticospinal excitability of lower limb muscle during isometric contraction

Cited by 14 publications

References 35 publications

Motor–Respiratory Coupling Improves Endurance Performance during Rhythmic Isometric Handgrip Exercise

Motor–Respiratory Coupling Improves Endurance Performance during Rhythmic Isometric Handgrip Exercise

Impact of Types of Breathing on Static Balance Ability in Healthy Adults

Tidal volume and respiration phase modulate cortico-muscular communication

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