Muscle Tone and Body Weight Predict Uphill Race Time in Amateur Trail Runners

Berzosa, César; Gutiérrez, Héctor; Bascuas, Pablo J.; Arbones, Irela; Bataller-Cervero, Ana Vanessa

doi:10.3390/ijerph18042040

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…Furthermore, these methods can be used to investigate how the rheological properties of skeletal muscles are related to specific sports performance. For example, measurements of pre-exercise muscle tone using Myoton have shown that, for some muscles, higher agonist muscle tone (or lower antagonist muscle tone [ 138 ]) predicts better performance both between different individuals [ 139 , 140 , 141 ] and within the same individual in the course of a day [ 142 ].…”

Section: Application Of Objective Methods In Muscle Tone Diagnosismentioning

confidence: 99%

Objective Methods of Muscle Tone Diagnosis and Their Application—A Critical Review

Kopecká

Jelen

Bittner

2023

Sensors

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“Muscle tone” is a clinically important and widely used term and palpation is a crucial skill for its diagnosis. However, the term is defined rather vaguely, and palpation is not measurable objectively. Therefore, several methods have been developed to measure muscle tone objectively, in terms of biomechanical properties of the muscle. This article aims to summarize these approaches. Through database searches, we identified those studies related to objective muscle tone measurement in vivo, in situ. Based on them, we described existing methods and devices and compared their reliability. Furthermore, we presented an extensive list of the use of these methods in different fields of research. Although it is believed by some authors that palpation cannot be replaced by a mechanical device, several methods have already proved their utility in muscle biomechanical property diagnosis. There appear to be two issues preventing wider usage of these objective methods in clinical practice. Firstly, a high variability of their reliability, and secondly, a lack of valid mathematical models that would provide the observed mechanical characteristics with a clear physical significance and allow the results to be compared with each other.

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Section: Application Of Objective Methods In Muscle Tone Diagnosismentioning

confidence: 99%

Objective Methods of Muscle Tone Diagnosis and Their Application—A Critical Review

Kopecká

Jelen

Bittner

2023

Sensors

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“…Dumke et al (2010) demonstrated that muscle stiffness is related to running economy at a speed that approximates endurance competition. Myotonometric research show biomechanical properties correlating to aspects of muscles’ function and competition results (Kim et al, 2016; Hong et al, 2020; Berzosa et al 2021). Jiménez-Sánchez et al (2018) found, that passive resistive torque of the triceps surae muscle (measured with the isokinetic device) is higher in more stiff, tense and elastic muscle.…”

Section: Introductionmentioning

confidence: 99%

Rectus FemorisMuscle Elasticity and Stiffness Correlates with Maximal Oxygen Consumption in Triathletes

Gavronski

Reimets

Talts

et al. 2023

Preprint

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VO2max is considered single best indicator of cardiovascular fitness and aerobic endurance. We analyzed retrospectively, are there any relationships between muscle parameters and oxygen consumption in a study where the myoton equipment was used to establish muscle biomechanical properties, such as elasticity, stiffness, and tension (measured as oscillation frequency) in triathletes. Eight muscles were studied in 14 male triathletes over three years. Relaxed and contracted states of muscles were measured. VO2max was recorded in these athletes up to four times during this period. Average values were calculated for each athlete and High (max 71.8 to min 62.3 ml/kg/min) and Low (59.1 to 51.3) oxygen consumption groups were formed. Higher oxygen consumption correlated significantly (r=-0.58; p=0.029) with improved elasticity (represented by smaller decrement values) of the rectus femoris muscle in a contracted state. Also, in the High VO2max group, this muscle (in a relaxed state) was significantly more elastic and stiffer at the same time compared to the Low group. An ultrasound registration was also conducted to observe the depth of the device's impact in the posterior crural muscles. It was confirmed that deep and substantial tissue disturbances were caused by this impact. According to our findings, myotonometry is an adequate method to establish muscle parameters. Elasticity and stiffness of the rectus femoris muscle may determine success in triathlon.

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“…Considering the aforementioned key factors affecting trail running performance and the specific characteristics of VK competitions (i.e., runners are used to face slopes of more than 40%, while the duration of these challenges can range between 29 and 60 min), the physiological and neuromuscular demands are maximized due to the accumulated gradient in competition, since runners must displace their body upward against gravity, increasing mechanical power in a manner proportionate to slope [9]. In this regard, scientific evidence shows a time-dependent relationship for both the development of muscle damage [3,[10][11][12] and altered myocardial function [13] after ultramarathon races, even if the competition is performed at low intensity [14].…”

Section: Introductionmentioning

confidence: 99%

Central and Peripheral Fatigue in Recreational Trail Runners: A Pilot Study

Pérez

Varela-Sanz

Lago-Fuentes

et al. 2022

IJERPH

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Background: Understanding fatigue mechanisms is crucial for exercise performance. However, scientific evidence on non-invasive methods for assessing fatigue in trail running competitions is scarce, especially when vertical kilometer trail running races (VK) are considered. The main purpose of this study was to assess the autonomic nervous system (ANS) activity (i.e., central fatigue) and the state of muscle activation (i.e., peripheral fatigue) before and after a VK competition. Methods: A cross-sectional pilot study was performed. After applying inclusion/exclusion criteria, 8 recreational male trail runners (31.63 ± 7.21 yrs, 1.75 m ± 0.05 m, 70.38 ± 5.41 kg, BMI: 22.88 ± 0.48, running experience: 8.0 ± 3.63 yrs, weekly training volume: 58.75 ± 10.35 km) volunteered to participate and were assessed for both central (i.e., via heart rate variability, HRV) and peripheral (via tensiomyography, TMG) fatigue before and after a VK race. Results: After the VK, resting heart rate, RMSSD (p = 0.01 for both) and SDNN significantly decreased (p = 0.02), while the stress score and the sympathetic-parasympathetic ratio increased (p = 0.01 and p = 0.02, respectively). The TMG analyses suggest that runners already suffered peripheral fatigue before the VK and that 20–30 min are enough for muscular recovery after the race. In summary, our data suggest that participants experienced a pre-competition fatigue status. Further longitudinal studies are necessary to investigate the mechanisms underlying fatigue during trail running races, while training periodization and tapering strategies could play a key role for minimizing pre-competition fatigue status.

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Muscle Tone and Body Weight Predict Uphill Race Time in Amateur Trail Runners

Cited by 4 publications

References 32 publications

Objective Methods of Muscle Tone Diagnosis and Their Application—A Critical Review

Objective Methods of Muscle Tone Diagnosis and Their Application—A Critical Review

Rectus FemorisMuscle Elasticity and Stiffness Correlates with Maximal Oxygen Consumption in Triathletes

Central and Peripheral Fatigue in Recreational Trail Runners: A Pilot Study

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