Hyperthermia-induced Neural Alterations Impair Proprioception and Balance

Mtibaa, Khouloud; Thomson, Athol; Nichols, David S.; Hautier, Christophe; Racinais, Sébastien

doi:10.1249/mss.0000000000001418

Cited by 17 publications

(13 citation statements)

References 39 publications

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“…The study results contradict those achieved by Altun et al [2], who reported no statistically significant change in jump performance after heat application, and by Mtibaa et al [33], who found that hyperthermia impaired the measured proprioception and balance parameters.…”

Section: Heat Modalitycontrasting

confidence: 99%

Effect of cold versus heat modalities on dynamic balance in healthy adolescents

Ahmed¹,

Shafeek²,

El-Kasem³

2021

Physiother Quart.

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Introduction. Many adolescents are treated with cold or heat modalities before therapeutic exercise, but the difference between the effect of cold vs. heat on dynamic balance is not clear till now. The study aimed to determine the immediate effects of cold and heat modalities for ankle joint on dynamic balance and also to compare the impact of these modalities on dynamic balance. Methods. The study involved 30 normal adolescents of both genders aged 13-18 years. The Biodex system was used for dynamic balance assessment in each participant under 3 conditions: (1) control condition: at room temperature; (2) immediately after a 15-minute cold immersion (5°C ± 1°C) for ankle joint; (3) immediately after a 15-minute heat immersion (40°C ± 5°C) for ankle joint. For randomization, the order of cold and heat modalities was chosen randomly by using a coin flip. Results. Mixed design MANoVA revealed statistically significant changes in dynamic balance, including overall stability (oAS), anteroposterior stability (AP), and mediolateral stability (ML) after cold modality and after heat modality (p 0.05). The pairwise comparison test to compare cold vs. heat modalities determined that oAS, AP, and ML were statistically significantly improved after heat modality in comparison with cold modality (p 0.05). Conclusions. dynamic balance could be altered immediately after cold or heat modalities. it improved after heat while decreased after cold modality in healthy adolescents.

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Section: Heat Modalitycontrasting

confidence: 99%

Effect of cold versus heat modalities on dynamic balance in healthy adolescents

Ahmed¹,

Shafeek²,

El-Kasem³

2021

Physiother Quart.

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“…Participants were instructed to maintain a single leg stance with a semi-flexed knee and hands on the hips while reaching with the other leg as far as possible along the three directions. Participants had to touch the furthest point possible on the line with the most distal part of their reach foot as lightly as possible using minimal pressure to ensure that the reach leg did not provide support in the maintenance of the upright posture and that stability was achieved through balance (Mtibaa et al, 2018). Participants returned to a bilateral stance while maintaining their equilibrium.…”

Section: Balance Ability Testmentioning

confidence: 99%

The Immediate Effects of Self‐Myofacial Release on Flexibility, Jump Performance and Dynamic Balance Ability

Zhang

Trama

Fouré

et al. 2020

Journal of Human Kinetics

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Self-myofascial release (SMR) is a popular method to potentially increase the compliance and extensibility of the fascia and reduce muscle stiffness. The purpose of this study was to examine the acute effects of posterior muscle chain SMR on flexibility, vertical jump performance and balance ability. Eighteen young participants volunteered to take part in this crossover design study. They performed two self-massage sessions in randomized order separated by at least one week. One session consisted of posterior muscle chain SMR whereas the other one was performed on the upper limbs as a control intervention (CON). Flexibility was measured with the Toe Touch Test (TTT), Weight-Bearing Lunge Test (WBLT), and Straight Leg Raise Test (SLR). Jump performance was evaluated during a squat jump, a counter movement jump and a stiffness jump. Dynamic balance ability was assessed through the Star Excursion Balance Test. All these variables were measured before and after each intervention. A significant increase in flexibility (+3.5 ± 1.8 cm, +1.6 ± 1.0°, and +7.7 ± 4.0° for the TTT, WLBT, and SLR, respectively, p < 0.003) and balance performance (4.8 ± 3.9 cm, p < 0.003) was observed following SMR intervention compared to CON. Conversely, jumping performance was unchanged in both groups. SMR improves joint flexibility and dynamic balance ability.

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“…Prolonged exercise (cycled for 2 h at a power output equal to 57–63% VO 2 max) without fluid ingestion negatively affects postural stability, whereas there is no effect after exercise with fluid replacement (intake of 1.9l of a carbohydrate-electrolyte solution) or after thermal dehydration induced by seven 15 min consecutive sauna sessions (85°C, 50% rh) with no fluid replacement ( Derave et al, 1998 ). However, more recent study by Mtibaa et al (2018) demonstrated that hyperthermia impairs the proprioception and balance parameters due to heat-induced alterations in efferent and afferent signals to and from the muscle. The exercise that induced a mild dehydration, which increases proteinemia and leads to body mass loss, was found to impair balance in the standard situation and when the vestibular cue is reliable ( Lion et al, 2010 ).…”

Section: Resultsmentioning

confidence: 99%

Physiological Mechanisms of Exercise and Its Effects on Postural Sway: Does Sport Make a Difference?

Zemková

2022

Front. Physiol.

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While the effect of a variety of exercises on postural balance control has been extensively studied, less attention has been paid to those requiring sport-specific skills. Therefore there is a need to analyze the literature and elucidate changes in postural balance control after exercises performed in conditions close to a particular sport. This scoping review aims (i) To map the literature that addresses postural sway aspects of acute responses to general and sport-specific exercises and their underlying physiological mechanisms, and (ii) To identify gaps in the existing literature and propose future research on this topic. The main literature search conducted on MEDLINE, Web of Science, Scopus, PubMed, and Cochrane Library databases was completed by SpringerLink, Elsevier, and Google Scholar. A total of 60 articles met the inclusion criteria. Findings identified that among a variety of studies evaluating the effects of exercise on postural balance control, only few of them were conducted under sport-specific conditions (i.e., while shooting in biathlon or pentathlon, and after simulated or match-induced protocols in combat and team sports). Therefore, more research is still needed to address this gap in the literature and aim research at investigation of postural sway response to sport-specific exercises. Further analysis of the literature showed that the type, intensity and duration of exercise play a key role in increased postural sway. Whole body and localized muscular fatigue of the trunk, neck and lower limbs is considered to be a main factor responsible for the magnitude of balance impairment in an initial phase of recovery and speed of its readjustment to a pre-exercise level. Other likely factors affecting postural stability are hyperventilation and deterioration of sensorimotor functions, though some contribution of muscle damage, dehydration, hyperthermia or dizziness cannot be excluded. A better understanding of the physiological mechanisms of balance impairment after exercises performed under simulated fatigue induced protocol, close to conditions specific to a particular sport, has implications for designing smart exercise programs tailored to individual needs to improve athlete performance with high demands on postural stability and/or decrease their risk of injuries.

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Hyperthermia-induced Neural Alterations Impair Proprioception and Balance

Abstract: The current study suggests that hyperthermia impairs the proprioception and balance parameters measured. These observations might be due to heat-induced alterations in efferent and afferent signals to and from the muscle.

Cited by 17 publications

References 39 publications

Effect of cold versus heat modalities on dynamic balance in healthy adolescents

Effect of cold versus heat modalities on dynamic balance in healthy adolescents

The Immediate Effects of Self‐Myofacial Release on Flexibility, Jump Performance and Dynamic Balance Ability

Physiological Mechanisms of Exercise and Its Effects on Postural Sway: Does Sport Make a Difference?

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