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Lässing J, Pökel C, Lingener L, Falz R, Kwast S, Schulze A, Busse M. The Influence of Customized Mouthguards on the Muscular Activity of the Masticatory Muscles at Maximum Bite and Motor Performance During Static and Dynamic Exercises. SPORTS MEDICINE-OPEN 2021; 7:64. [PMID: 34477985 PMCID: PMC8417176 DOI: 10.1186/s40798-021-00354-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/27/2021] [Indexed: 11/10/2022]
Abstract
Background Some studies have suggested that a mouthguard is a performance-enhancing device due to a remote voluntary contraction. The extent to which a mouthguard can induce this phenomenon, e.g., by potentially increasing biting, has not been clarified. This study’s aim was to investigate the muscular activity of the maxillary and peripheral musculature and motor performance during a rest and exercise test. Methods Our study comprised 12 active, male, professional young handball players (age 18.83 ± 0.39 years). Their performance, electromyographic (EMG) muscle activity (Σ), and lateral deviation (Δ) of the masticatory and peripheral musculature were measured during rest in a maximum bite force measurement, one-legged stand, a kettlebell swing exercise and a jump test while wearing a customized mouthguard (CMG) or not wearing one (Co). Results Maximum bite force measurements did not differ significantly in their mean values of muscle activity (Σ) for the masseter and temporalis muscles (Co 647.6 ± 212.8 µV vs. CMG 724.3 ± 257.1 µV p = 0.08) (Co 457.2 ± 135.5 µV vs. CMG 426.6 ± 169.3 µV p = 0.38) with versus without CMG. We found no differences in the mean activation values during a one-legged stand, the kettlebell swing, and jump test (Σ) in any of the muscles tested. Lateral deviations (Δ) wearing a CMG were significantly less in the erector spinae during the kettlebell swing (Co 5.33 ± 3.4 µV vs. CMG 2.53 ± 1.8 µV p = 0.01) and countermovement jump (Co 37.90 ± 30.6 µV vs. CMG 17.83 ± 22.3 µV p = 0.03) compared to the performance without a CMG. Jump height, rotation moment, and balance were unchanged with versus without CMG. Conclusion Our results at rest and during specific motor stress show no differences with or without a CMG. The improved peripheral muscular balance while wearing a CMG indicates improved muscular stabilization.
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Affiliation(s)
- Johannes Lässing
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany.
| | - Christoph Pökel
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | | | - Roberto Falz
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | - Stefan Kwast
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | - Antina Schulze
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | - Martin Busse
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
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Masticatory Muscles Activity in Sport Climbers. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17041378. [PMID: 32098017 PMCID: PMC7068301 DOI: 10.3390/ijerph17041378] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/13/2020] [Accepted: 02/17/2020] [Indexed: 12/13/2022]
Abstract
Masticatory muscle activity during teeth clenching is associated with changes in many physiological parameters throughout the body. Clenching can improve muscle activity, force production, rate of force development, and joint fixation. Hence, teeth clenching and masticatory muscle activity can be important in competitive sports activities. Sport climbing is becoming increasingly popular and will be included for the first time in the Summer Olympic Games, Tokyo, 2020. However, masticatory muscle activity in sport climbers has not yet been studied. The aim of the presented study is to compare the bioelectrical activity of the masticatory muscles in sport climbers and non-climbers in order to determine the relationship between these muscles and climbing activity. 44 subjects without masticatory system disorders (16 women and 28 men, average age 26.3) were divided into two groups of 22 sport climbers (8 women, 14 men, climbing experience >4 years), while 22 people (8 women, 14 men, with no regular sports activity) were assigned to the control group. Electromyographic examination of temporalis anterior (TA) and masseter muscle (MM) was evaluated in three conditions: during resting mandibular position, during maximum intercuspation clenching, and during maximum voluntary clenching with cotton rolls between teeth. For statistical analysis, the W Shapiro-Wilk test and the Mann-Whitney U test were used. Sport climbers showed significantly higher bioelectrical activities of MM during maximum intercuspation clenching (238.45 μV vs. 83.87 μV, p = 0.002), and during maximum voluntary clenching with cotton rolls between teeth (300.01 μV vs. 101.38 μV, p = 0.001) compared to controls. The differences between groups in relation to the resting bioelectrical activity of the MM muscles, and TA muscles in all conditions were not statistically significant (p > 0.05). Higher bioelectrical activity of masseter muscles during clenching in climbers can be associated with this sports activity. However, the mechanism remains unknown and requires future research.
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Influence of Vertical Dimension of Occlusion on Peak Force During Handgrip Tests in Athletes. Asian J Sports Med 2018. [DOI: 10.5812/asjsm.68274] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Allen CR, Fu YC, Cazas-Moreno V, Valliant MW, Gdovin JR, Williams CC, Garner JC. Effects of Jaw Clenching and Jaw Alignment Mouthpiece Use on Force Production During Vertical Jump and Isometric Clean Pull. J Strength Cond Res 2018; 32:237-243. [PMID: 28777246 DOI: 10.1519/jsc.0000000000002172] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Allen, CR, Fu, Y-C, Cazas-Moreno, V, Valliant, MW, Gdovin, JR, Williams, CC, and Garner, JC. Effects of jaw clenching and jaw alignment mouthpiece use on force production during vertical jump and isometric clean pull. J Strength Cond Res 32(1): 237-243, 2018-This study examined the effects of jaw clenching, a self-adapted, jaw-repositioning mouthpiece on force production during maximum countermovement vertical jump and maximum isometric midthigh clean pull assessments in an attempt to determine any ergogenic effect attributable to clenching, jaw-repositioning mouthpiece use, or the combination of both. Thirty-six male subjects performed vertical jump and isometric clean pull assessments from a force platform under various mouthpiece and clench conditions. A 3 × 2 (mouthpiece × clench) repeated-measures analysis of variance was conducted to analyze each of the following force production variables for both assessments: peak force, normalized peak force, and rate of force development. In addition, jump height was analyzed for the vertical jump. Results revealed improvements in peak force (F1,35 = 15.84, p ≤ 0.001, (Equation is included in full-text article.)= 0.31), normalized peak force (F1,35 = 16.28, p ≤ 0.001, (Equation is included in full-text article.)= 0.32), and rate of force development (F1,35 = 12.89, p = 0.001, (Equation is included in full-text article.)= 0.27) during the isometric clean pull assessment when participants maximally clenched their jaw, regardless of mouthpiece condition. There were no statistically significant differences in jump height, peak force, normalized peak force, or rate of force development during the vertical jump for any treatment condition. This study supports previous research demonstrating that the implementation of remote voluntary contractions such as jaw clenching can lead to concurrent activation potentiation and a resulting ergogenic effect during activities involving and requiring high-force production.
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Affiliation(s)
- Charles R Allen
- Exercise Science Program, Florida Southern College, Lakeland, Florida
| | - Yang-Chieh Fu
- Department of Health, Exercise Science, and Recreation Management, University of Mississippi, Oxford, Mississippi
| | - Vanessa Cazas-Moreno
- Department of Health, Exercise Science, and Recreation Management, University of Mississippi, Oxford, Mississippi
| | - Melinda W Valliant
- Department of Health, Exercise Science, and Recreation Management, University of Mississippi, Oxford, Mississippi
| | - Jacob R Gdovin
- Department of Health, Exercise Science, and Recreation Management, University of Mississippi, Oxford, Mississippi
| | - Charles C Williams
- Department of Health, Exercise Science, and Recreation Management, University of Mississippi, Oxford, Mississippi
| | - John C Garner
- Department of Kinesiology and Health Promotion, Troy University, Troy, Alabama
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Alghadir AH, Zafar H, Iqbal ZA, Al-Eisa ES. Effect of voluntary teeth clenching and sitting posture on maximal static force of limb muscles. J Sports Med Phys Fitness 2018; 59:774-778. [PMID: 29619804 DOI: 10.23736/s0022-4707.18.08341-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND People clench their teeth to activate facial, neck and abdominal muscles when they need to generate heavy muscle force against large resistance like lifting heavy objects, in order to gain possible ergogenic advantage. These are termed as remote voluntary contractions. Aim of this study was to evaluate the effect of voluntary teeth clenching on maximal voluntary contraction of extensors and flexors of the knee, shoulder and elbow joints of the dominant side during slouch and unsupported upright sitting. METHODS One hundred healthy young male adults (mean age 23.3 years) participated in this study. Maximal voluntary contraction was measured using a hand-held dynamometer. RESULTS Jaw clenching caused different ergogenic effect during slouch versus unsupported sitting postures. The data revealed that during unsupported upright sitting, the effect of jaw clenching consistently results in larger maximal voluntary contraction of both extensor and flexor muscles of all the three studied joints. However, during slouch sitting, only the maximal voluntary contraction of extensors of elbow and flexors of knee were larger with clenched teeth position. CONCLUSIONS Jaw clenching can affect the maximal voluntary contraction of limb muscles which is sitting posture dependent. Jaw clenching can consistently facilitate certain muscles of the upper and lower limbs to generate greater force production during upright sitting.
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Affiliation(s)
- Ahmad H Alghadir
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Hamayun Zafar
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.,Department of Odontology, Clinical Oral Physiology, Umea University, Umea, Sweden
| | - Zaheen A Iqbal
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia -
| | - Einas S Al-Eisa
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Lloyd JD, Nakamura WS, Maeda Y, Takeda T, Leesungbok R, Lazarchik D, Dorney B, Gonda T, Nakajima K, Yasui T, Iwata Y, Suzuki H, Tsukimura N, Churei H, Kwon KR, Choy MM, Rock JB. Mouthguards and their use in sports: Report of the 1st International Sports Dentistry Workshop, 2016. Dent Traumatol 2017; 33:421-426. [DOI: 10.1111/edt.12375] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2017] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Tomotaka Takeda
- Tokyo Dental College Department of Oral Health & Clinical Science Division of Sports Dentistry; Tokyo Japan
| | | | | | - Brett Dorney
- Faculty of Dentistry; Sydney University; Sydney Australia
| | - Tomoya Gonda
- Osaka University Graduate School of Dentistry; Osaka Japan
| | - Kazunori Nakajima
- Tokyo Dental College Department of Oral Health & Clinical Science Division of Sports Dentistry; Tokyo Japan
| | | | - Yoshihiro Iwata
- Nihon University School of Dentistry at Matsudo; Chiba Japan
| | - Hiroshi Suzuki
- Nihon University School of Dentistry at Matsudo; Chiba Japan
| | | | | | - Kung-Rock Kwon
- Kyung Hee University School of Dentistry; Seoul South Korea
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Alghadir A, Zafar H, Iqbal ZA. Effect of upright and slouch sitting postures and voluntary teeth clenching on hand grip strength in young male adults. J Back Musculoskelet Rehabil 2017; 30:961-965. [PMID: 28453449 DOI: 10.3233/bmr-150278] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Estimation of handgrip strength (HGS) is routinely used by clinicians and epidemiologists for objective assessment of functional status of hand and upper extremity. It is also used as an indirect indicator of overall physical strength and health status in variety of clinical situations and chronic general medical conditions. OBJECTIVE The present study was conducted to examine the effects of upright and slouch sitting postures and voluntary teeth clenching on hand grip strength in healthy young male subjects. METHODS One hundred healthy young males (aged 18-30 years) participated in this study. The HGS was measured using a commercially available dynamometer for the dominant hand. The HGS was measured during four test conditions; (a) slouch sitting without teeth contact, (b) slouch sitting with teeth clenching, (c) upright sitting without teeth contact, and (d) upright sitting with teeth clenching. RESULTS The HGS values were significantly higher during slouch than upright sitting posture, both during similar and opposite teeth related conditions (p< 0.001). Teeth clenching had no effect on the in HGS values during slouch or upright sitting posture (P> 0.05). CONCLUSIONS As compared to upright sitting, higher HGS values can be obtained during slouch sitting in young healthy males. Teeth clenching does not affect the HGS values during slouch or upright sitting posture.
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Affiliation(s)
- Ahmad Alghadir
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Hamayun Zafar
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.,Department of Odontology, Clinical Oral Physiology, Umea University, Umea, Sweden
| | - Zaheen A Iqbal
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Buscà B, Morales J, Solana-Tramunt M, Miró A, García M. Effects of Jaw Clenching While Wearing a Customized Bite-Aligning Mouthpiece on Strength in Healthy Young Men. J Strength Cond Res 2016; 30:1102-10. [PMID: 27003454 DOI: 10.1519/jsc.0000000000001192] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Recent studies have investigated the ergogenic effects of different types of mouthguards. There is evidence of the benefits of clenching customized mouthpieces on force and power development. The phenomenon called concurrent activation potentiation (CAP) promoted in jaw clenching seems to enhance the muscular strength and power in maximal isometric contractions and powerful actions in sport. Moreover, a bite-aligning mouthpiece may promote a more aligned and powerful clench. The objective of the present study was to investigate the effects of jaw clenching while wearing a customized bite-aligning mouthpiece (MP) on jump ability and isometric maximal strength tests in contrast to 2 other conditions: nonjaw clenching (NON-JAW) and jaw clenching without the mouthpiece (JAW). A within-subjects design was used to assess the jump performance and the maximal isometric force in 28 physically active male subjects. Statistical analyses revealed significantly higher performance in JAW and NON-JAW conditions for handgrip force (HG-peakforce) and all variables of the back-row exercise (BRW) and countermovement vertical jump (CMVJ) (p ≤ 0.05). Significant differences between NON-JAW and JAW were found for HG-peakforce (p ≤ 0.05). These findings suggest that it is advisable to use a customized bite-aligning mouthpiece to improve strength and power performance.
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Affiliation(s)
- Bernat Buscà
- Department of Sports Sciences, Ramon Llull University, FPCEE Blanquerna, Barcelona, Spain
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Ringhof S, Stein T, Hellmann D, Schindler HJ, Potthast W. Effect of Jaw Clenching on Balance Recovery: Dynamic Stability and Lower Extremity Joint Kinematics after Forward Loss of Balance. Front Psychol 2016; 7:291. [PMID: 27014116 PMCID: PMC4786560 DOI: 10.3389/fpsyg.2016.00291] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 02/15/2016] [Indexed: 01/03/2023] Open
Abstract
Postural control is crucial for most tasks of daily living, delineating postural orientation and balance, with its main goal of fall prevention. Nevertheless, falls are common events, and have been associated with deficits in muscle strength and dynamic postural stability. Recent studies reported on improvements in rate of force development and static postural control evoked by jaw clenching activities, potentially induced by facilitation of human motor system excitability. However, there are no studies describing the effects on dynamic stability. The present study, therefore, aimed to investigate the effects of submaximum jaw clenching on recovery behavior from forward loss of balance. Participants were 12 healthy young adults, who were instructed to recover balance from a simulated forward fall by taking a single step while either biting at a submaximum force or keeping the mandible at rest. Bite forces were measured by means of hydrostatic splints, whereas a 3D motion capture system was used to analyze spatiotemporal parameters and joint angles, respectively. Additionally, dynamic stability was quantified by the extrapolated CoM concept, designed to determine postural stability in dynamic situations. Paired t-tests revealed that submaximum biting did not significantly influence recovery behavior with respect to any variable under investigation. Therefore, reductions in postural sway evoked by submaximum biting are obviously not transferable to balance recovery as it was assessed in the present study. It is suggested that these contradictions are the result of different motor demands associated with the abovementioned tasks. Furthermore, floor effects and the sample size might be discussed as potential reasons for the absence of significances. Notwithstanding this, the present study also revealed that bite forces under both conditions significantly increased from subjects’ release to touchdown of the recovery limb. Clenching the jaw, hence, seems to be part of a common physiological repertoire used to improve motor performance.
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Affiliation(s)
- Steffen Ringhof
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Thorsten Stein
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Daniel Hellmann
- Department of Prosthodontics, Dental School, University of Heidelberg Heidelberg, Germany
| | - Hans J Schindler
- Department of Prosthodontics, Dental School, University of HeidelbergHeidelberg, Germany; Research Group Biomechanics, Institute for Mechanics, Karlsruhe Institute of TechnologyKarlsruhe, Germany
| | - Wolfgang Potthast
- Institute of Biomechanics and Orthopaedics, German Sport University CologneCologne, Germany; ARCUS Clinics PforzheimPforzheim, Germany
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Mullane MD, Maloney SJ, Chavda S, Williams S, Turner AN. Effects of Concurrent Activation Potentiation on Countermovement Jump Performance. J Strength Cond Res 2015; 29:3311-6. [PMID: 25992661 DOI: 10.1519/jsc.0000000000001010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Michael D Mullane
- 1London Sport Institute, Middlesex University, London, United Kingdom; and 2Department of Sports Science and Physical Activity, University of Bedfordshire, Bedford, United Kingdom
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Ringhof S, Hellmann D, Meier F, Etz E, Schindler HJ, Stein T. The effect of oral motor activity on the athletic performance of professional golfers. Front Psychol 2015; 6:750. [PMID: 26082747 PMCID: PMC4451241 DOI: 10.3389/fpsyg.2015.00750] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 05/20/2015] [Indexed: 11/13/2022] Open
Abstract
Human motor control is based on complex sensorimotor processes. Recent research has shown that neuromuscular activity of the craniomandibular system (CMS) might affect human motor control. In particular, improvements in postural stability and muscle strength have been observed as a result of voluntary jaw clenching. Potential benefits of jaw aligning appliances on muscle strength and golf performance have also been described. These reports are highly contradictory, however, and the oral motor task performed is often unclear. The purpose of our study was, therefore, to investigate the effect of submaximum biting on golf performance via shot precision and shot length over three different distances. Participants were 14 male professional golfers - seven with sleep bruxism and seven without - randomly performing golf shots over 60m, 160m, or driving distance while either biting on an oral splint or biting on their teeth; habitual jaw position served as the control condition. Statistical analysis revealed that oral motor activity did not systematically affect golf performance in respect of shot precision or shot length for 60m, 160 m, or driving distance. These findings were reinforced by impact variables such as club head speed and ball speed, which were also not indicative of significant effects. The results thus showed that the strength improvements and stabilizing effects described previously are, apparently, not transferable to such coordination-demanding sports as golf. This could be due to the divergent motor demands associated with postural control and muscle strength on the one hand and the complex coordination of a golf swing on the other. Interestingly, subjects without sleep bruxism performed significantly better at the short distance (60 m) than those with bruxism. Because of the multifactorial etiology of parafunctional CMS activity, conclusions about the need for dental treatment to improve sports performance are, however, completely unwarranted.
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Affiliation(s)
- Steffen Ringhof
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Daniel Hellmann
- Department of Prosthodontics, Dental School, University of Heidelberg Heidelberg, Germany
| | - Florian Meier
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Eike Etz
- Department of Prosthodontics, Dental School, University of Heidelberg Heidelberg, Germany
| | - Hans J Schindler
- Department of Prosthodontics, Dental School, University of Heidelberg Heidelberg, Germany ; Research Group Biomechanics, Institute for Mechanics, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Thorsten Stein
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
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Allen CR, Dabbs NC, Zachary CS, Garner JC. The acute effect of a commercial bite-aligning mouthpiece on strength and power in recreationally trained men. J Strength Cond Res 2014; 28:499-503. [PMID: 24263660 DOI: 10.1519/jsc.0b013e3182a95250] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Because of the relative newness of mouthpieces, there are few investigations into using performance mouthpieces during sport and physical activity to substantiate claims of performance enhancement. The purpose of this study was to investigate the acute effect of a commercially available, noninjury preventive, performance mouthpiece on practical acute performance measures of power and strength. A within-subjects design was used to evaluate 21 (N = 21) recreationally trained college aged males on the performance of a maximum countermovement vertical jump (CMVJ) from a force platform and 1 repetition maximum (1RM) bench press exercise for the following conditions: with mouthpiece (MP) and without mouthpiece (noMP). Rate of force development (RFD) and peak vertical force (PF) were derived from force platform data. Statistical analysis revealed no significant differences between conditions for CMVJ height (p = 0.13), RFD at 200 ms (p = 0.09), PF (p = 0.08), and 1RM bench press (p = 0.45). These data indicate that the use of this particular jaw aligning mouthpiece specifically in an attempt to produce an ergogenic effect on performance is unwarranted.
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Affiliation(s)
- Charles R Allen
- Department of Health, Exercise Science, and Recreation Management, Applied Biomechanics Laboratory, University of Mississippi, University, Mississippi
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Dunn-Lewis C, Luk HY, Comstock BA, Szivak TK, Hooper DR, Kupchak BR, Watts AM, Putney BJ, Hydren JR, Volek JS, Denegar CR, Kraemer WJ. The effects of a customized over-the-counter mouth guard on neuromuscular force and power production in trained men and women. J Strength Cond Res 2012; 26:1085-93. [PMID: 22290521 DOI: 10.1519/jsc.0b013e31824b4d5b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Although mouth guards were originally designed for injury prevention, even elite athletes are now using performance mouth guards to improve athletic success. Both expensive custom models and over-the-counter models are available, but the efficacy is not well known. Some athletes remain wary of the perceived potential for detriments using a mouth guard to their performance. Thus, the purpose of this study was to examine various physical performance tests when using a mouth guard including a customized over-the-counter mouth guard. Twenty-six trained men (25 ± 4 years; 1.78 ± 0.07 m; 83.3 ± 11.4 kg) and 24 trained women (23 ± 3 years; 1.65 ± 0.08 m; 62.6 ± 7.8 kg) volunteered for the investigation. The subjects completed a familiarization period and then balanced and randomized treatment conditions that included: (a) a customized Power Balance performance mouth guard (PB MG); (b) a regular over the counter boil-and-bite mouth guard (Reg MG); and (c) a no mouth guard (No MG) treatment condition. At each visit, the subjects completed a testing protocol that was sequenced in the following order: sit-and-reach flexibility, medial-lateral balance, visual reaction time, vertical jump, 10-m sprint, bench throw, and plyo press power quotient (3PQ). Heart rate and rating of perceived exertion (RPE) were recorded around the 3PQ. Significance was set at p ≤ 0.05. Expected significant sex differences existed for all power, strength, and speed variables. Bench throw power (watts) and force (newtons) were significantly higher under PB MG than either Reg MG or No MG or in both men and women. The 3PQ power and force production were higher than that for the other 2 treatments for the PB MG for men only. There were no significant differences for treatment conditions in the heart rate or RPE after the 3PQ test. Men were better able to maintain significantly higher 3PQ power production under PB MG treatment condition compared with the other 2 treatment conditions. Rate of power development was significantly higher in men for the vertical jump when using the PB MG compared with that for other treatment conditions in men only. No differences were observed in flexibility, balance, visual reaction time, or sprint time. The PB MG performance mouth guard improves performance of upper-body loaded power exercises in both men and women and lower body power exercise in men without compromising performance on any other performance parameters.
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Affiliation(s)
- Courtenay Dunn-Lewis
- Human Performance Laboratory, Department of Kinesiology, University of Connecticut, Storrs, Connecticut, USA
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Ebben WP, Kaufmann CE, Fauth ML, Petushek EJ. Kinetic Analysis of Concurrent Activation Potentiation during Back Squats and Jump Squats. J Strength Cond Res 2010; 24:1515-9. [DOI: 10.1519/jsc.0b013e3181dc4761] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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EBBEN WILLIAMP, PETUSHEK ERICHJ, FAUTH MCKENZIEL, GARCEAU LUKER. EMG Analysis of Concurrent Activation Potentiation. Med Sci Sports Exerc 2010; 42:556-62. [DOI: 10.1249/mss.0b013e3181b66499] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ebben WP, Flanagan EP, Jensen RL. Jaw Clenching Results in Concurrent Activation Potentiation During the Countermovement Jump. J Strength Cond Res 2008; 22:1850-4. [DOI: 10.1519/jsc.0b013e3181875117] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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EBBEN WILLIAMP, LEIGH DAVIDH, GEISER CHRISTOPHERF. The Effect of Remote Voluntary Contractions on Knee Extensor Torque. Med Sci Sports Exerc 2008; 40:1805-9. [DOI: 10.1249/mss.0b013e31817dc4ad] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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