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Uchino T, Uchida M, Ito R, Fujie S, Iemitsu K, Kojima C, Nakamura M, Shimizu K, Tanimura Y, Shinohara Y, Hashimoto T, Isaka T, Iemitsu M. Effects of different exercise intensities or durations on salivary IgA secretion. Eur J Appl Physiol 2024:10.1007/s00421-024-05467-6. [PMID: 38634902 DOI: 10.1007/s00421-024-05467-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 03/09/2024] [Indexed: 04/19/2024]
Abstract
PURPOSE This study aimed to examine changes in salivary immunoglobulin A (s-IgA) secretion at different intensities or durations of acute exercise. METHODS Twelve healthy untrained young males were included in randomized crossover trials in Experiment 1 (cycling exercise for 30 min at a work rate equivalent to 35%, 55%, and 75% maximal oxygen uptake [ V ˙ O2max]) and Experiment 2 (cycling exercise at 55% V ˙ O2max intensity for 30, 60, and 90 min). Saliva samples were collected at baseline, immediately after, and 60 min after each exercise. RESULTS Experiment 1: The percentage change in the s-IgA secretion rate in the 75% V ˙ O2max trial was significantly lower than that in the 55% V ˙ O2max trial immediately after exercise (- 45.7%). The percentage change in the salivary concentration of cortisol, an s-IgA regulating factor, immediately after exercise significantly increased compared to that at baseline in the 75% V ˙ O2max trial (+ 107.6%). A significant negative correlation was observed between the percentage changes in saliva flow rate and salivary cortisol concentration (r = - 0.52, P < 0.01). Experiment 2: The percentage change in the s-IgA secretion rate in the 90-min trial was significantly lower than that in the 30-min trial immediately after exercise (-37.0%). However, the percentage change in salivary cortisol concentration remained the same. CONCLUSION Our findings suggest that a reduction in s-IgA secretion is induced by exercise intensity of greater than or equal to 75% V ˙ O2max for 30 min or exercise duration of greater than or equal to 90 min at 55% V ˙ O2max in healthy untrained young men.
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Affiliation(s)
- Takamasa Uchino
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Masataka Uchida
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga, Japan
- Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Reita Ito
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Shumpei Fujie
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
- Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Keiko Iemitsu
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Chihiro Kojima
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga, Japan
- Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Mariko Nakamura
- Department of Sport Science and Research, Japan Institute of Sports Sciences, Nishigaoka Kita-ku, Tokyo, Japan
| | - Kazuhiro Shimizu
- Department of Sport Science and Research, Japan Institute of Sports Sciences, Nishigaoka Kita-ku, Tokyo, Japan
| | - Yuko Tanimura
- Department of Sport Science and Research, Japan Institute of Sports Sciences, Nishigaoka Kita-ku, Tokyo, Japan
| | - Yasushi Shinohara
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
- Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Takeshi Hashimoto
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
- Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Tadao Isaka
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
- Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Motoyuki Iemitsu
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
- Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan.
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Saad N, Moustafa IM, Ahbouch A, Alsaafin NM, Oakley PA, Harrison DE. Are Rotations and Translations of Head Posture Related to Gait and Jump Parameters? J Clin Med 2023; 12:6211. [PMID: 37834858 PMCID: PMC10573992 DOI: 10.3390/jcm12196211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 08/13/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
This study assessed the relationship between head posture displacements and biomechanical parameters during gait and jumping. One hundred male and female students (20 ± 3 yrs) were assessed via the PostureScreen Mobile® app to quantify postural displacements of head rotations and translations including: (1) the cranio-vertebral angle (CVA) (°), (2) anterior head translation (AHT) (cm), (3) lateral head translation in the coronal plane (cm), and (4) lateral head side bending (°). Biomechanical parameters during gait and jumping were measured using the G-Walk sensor. The assessed gait spatiotemporal parameters were cadence (steps/min), speed (m/s), symmetry index, % left and right stride length (% height), and right and left propulsion index. The pelvic movement parameters were (1) tilt symmetry index, (2) tilt left and right range, (3) obliquity symmetry index, (4) obliquity left and right range, (5) rotation symmetry index, and (6) rotation left and right range. The jump parameters measured were (1) flight height (cm), (2) take off force (kN), (3) impact Force (kN), (4) take off speed (m/s), (5) peak speed (m/s), (6) average speed concentric phase (m/s), (7) maximum concentric power (kW), (8) average concentric power (kW) during the counter movement jump (CMJ), and (9) CMJ with arms thrust (CMJAT). At a significance level of p ≤ 0.001, moderate-to-high correlations (0.4 < r < 0.8) were found between CVA, AHT, lateral translation head, and all the gait and jump parameters. Weak correlations (0.2 < r < 0.4) were ascertained for lateral head bending and all the gait and jump parameters except for gait symmetry index and pelvic symmetry index, where moderate correlations were identified (0.4 < r < 0.6). The findings indicate moderate-to-high correlations between specific head posture displacements, such as CVA, lateral head translation and AHT with the various gait and jump parameters. These findings highlight the importance of considering head posture in the assessment and optimization of movement patterns during gait and jumping. Our findings contribute to the existing body of knowledge and may have implications for clinical practice and sports performance training. Further research is warranted to elucidate the underlying mechanisms and establish causality in these relationships, which could potentially lead to the development of targeted interventions for improving movement patterns and preventing injuries.
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Affiliation(s)
- Nabil Saad
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
| | - Ibrahim M. Moustafa
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
- Neuromusculoskeletal Rehabilitation Research Group, RIMHS–Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Amal Ahbouch
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
| | - Nour Mustafa Alsaafin
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
| | - Paul A. Oakley
- Kinesiology and Health Sciences, York University, Toronto, ON M3J 1P3, Canada
- Independent Researcher, Newmarket, ON L3Y 8Y8, Canada
| | - Deed E. Harrison
- CBP Nonprofit (a Spine Research Foundation), Eagle, ID 83616, USA
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Wdowski MM, Rosicka K, Hill M. Influence of lower-limb muscular and tendon mechanical properties and strength on countermovement jump performance. J Sports Med Phys Fitness 2023; 63:16-22. [PMID: 35230068 DOI: 10.23736/s0022-4707.22.13567-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The aim of the study is to examine the relationship between measures of muscle and tendon mechanical properties and strength on countermovement jump (CMJ) performance. METHODS Twenty-six physically active participants (males; N.=16: females; N.=10) were tested. Testing comprised of measuring the mechanical properties of lower limb muscles and tendons using myotonometry, isometric and isokinetic knee extensor strength through dynamometry, and CMJ's with a force platform. RESULTS Large positive correlations were observed between CMJ jump height and Achilles tendon stiffness (N/m) (r=0.56) and Achilles tendon tone (Hz) (r=0.553). Large negative correlations were found between CMJ height and Achilles tendon elasticity (r=-0.658), and Achilles tendon relaxation (r=-0.572), and Achilles tendon creep (r=-0.589). Large correlations (r=0.592 to 0.659) were observed between CMJ height and all measures of isometric and isokinetic dynamometry measures. Achilles tendon stiffness, elasticity level and relaxation, and isokinetic peak concentric torque (N.m) explained 63% of this variance. CONCLUSIONS Greater stiffness of the Achilles tendon may improve CMJ performance due to the improved transfer of concentric and eccentric force of the knee extensor muscles. Practitioners need to implement specific interventions to target increasing Achilles tendon stiffness to improve countermovement jump performance.
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Affiliation(s)
- Maximilian M Wdowski
- School of Life Sciences, Center for Sport, Exercise and Life Sciences, Coventry University, Coventry, UK -
| | - Katarzyna Rosicka
- Department of Biological Sciences, Faculty of Physical Culture, Poznań University of Physical Education, Gorzów Wielkopolski, Poland
| | - Mathew Hill
- School of Life Sciences, Center for Sport, Exercise and Life Sciences, Coventry University, Coventry, UK
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Soler-López A, García-de-Alcaraz A, Moreno-Villanueva A, Pino-Ortega J. Concurrent Validity and Reliability of Devices to Measure Jump Height in Men's Handball Players. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22239070. [PMID: 36501772 PMCID: PMC9738152 DOI: 10.3390/s22239070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/09/2022] [Accepted: 11/17/2022] [Indexed: 05/14/2023]
Abstract
UNLABELLED Although there is a wide range of validated devices to measure vertical jump height, the degree of interchangeability among them is currently unknown. AIMS The purpose of this study was to examine the concurrent validity and reliability of multiple devices to measure jump height in men's handball players. METHODS Sixteen players (age = 24.0 ± 3.7 years old) performed three types of jumps (n= 144-squat jump (SJ), countermovement jump (CMJ) and Abalakov jump (ABK)) on a contact platform (CHRONOJUMP®) while simultaneously being measured with two inertial devices (WIMU® and VERT®) and recorded with a high-speed camera. Vertical jump height was analyzed according to each type of jump. RESULTS The t-test showed statistically significant differences (p = 0.001) between the contact platform (reference standard) and the rest of the tools that tended to overestimate jump height in all jumps. SJ and CMJ proved to be the jump tests with the most stable reliability values in all devices (ICC: 0.92-0.98), except in the comparison with VERT®. CONCLUSIONS Although all the analyzed devices proved to be valid and reliable in previous studies, they are not interchangeable. Therefore, it is suggested to always use the same type of device to evaluate vertical height jump.
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Affiliation(s)
- Alejandro Soler-López
- Faculty of Sports Sciences, University of Murcia, 30720 San Javier, Spain
- Correspondence: ; Tel.: +34-654-522-340
| | - Antonio García-de-Alcaraz
- Faculty of Educational Sciences, University of Almería, 04120 Almería, Spain
- SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, 04120 Almería, Spain
| | | | - José Pino-Ortega
- Faculty of Sports Sciences, University of Murcia, 30720 San Javier, Spain
- BIOVETMED & SPORTSCI Research Group, Department of Physical Activity and Sport, Faculty of Sport Sciences, University of Murcia, 30720 San Javier, Spain
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Effects of an Offshore Sailing Competition on Anthropometry, Muscular Performance, Subjective Wellness, and Salivary Cortisol in Professional Sailors. Int J Sports Physiol Perform 2022; 17:1205-1212. [PMID: 35700975 DOI: 10.1123/ijspp.2021-0575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Evidence regarding the impact of offshore sailing on fatigue and readiness variables is conspicuous by its absence. This study investigated the acute effects of an offshore sailing regatta on anthropometry, muscular performance, subjective recovery, and salivary biomarker cortisol. METHODS Ten professional offshore sailors from a mixed-sex crew partook in the study (N = 10; mean [SD] age = 32.2 [3.96] y; stature = 179.1 [7.30] cm; body mass = 84.2 [12.1] kg). The race involved 3 offshore legs over a 3-week period. Baseline measures of anthropometry, lower- and upper-body muscular function, perceptions of subjective wellness, and salivary cortisol were assessed 3 hours prior to competition (ie, before the first leg). These measures were repeated within 30 minutes after the cessation of each leg. During each leg, boat movements were recorded via global positioning system units. RESULTS There were significant reductions in lower (effect size [ES] = 0.49) and upper muscular (ES = 0.21) functions, as well as in subjective wellness (ES = 1.65). Salivary cortisol levels increased (ES = 0.84). CONCLUSION These results demonstrate that, during an intensified period of sailing competition, fatigue will progressively increase. This may impede sailing performance by reducing physical and cognitive efficiency. Furthermore, countermovement jump, handgrip strength, perception of subjective wellness, and cortisol concentration appear to be sensitive measures for monitoring fatigue and readiness in professional sailors.
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Peart DJ, Balsalobre-Fernández C, Shaw MP. Use of Mobile Applications to Collect Data in Sport, Health, and Exercise Science: A Narrative Review. J Strength Cond Res 2019; 33:1167-1177. [PMID: 29176384 DOI: 10.1519/jsc.0000000000002344] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Peart, DJ, Balsalobre-Fernández, C, and Shaw, MP. Use of mobile applications to collect data in sport, health, and exercise science: A narrative review. J Strength Cond Res 33(4): 1167-1177, 2019-Mobile devices are ubiquitous in the population, and most have the capacity to download applications (apps). Some apps have been developed to collect physiological, kinanthropometric, and performance data; however, the validity and reliability of such data is often unknown. An appraisal of such apps is warranted, as mobile apps may offer an alternative method of data collection for practitioners and athletes with money, time, and space constraints. This article identifies and critically reviews the commercially available apps that have been tested in the scientific literature, finding evidence to support the measurement of the resting heart through photoplethysmography, heart rate variability, range of motion, barbell velocity, vertical jump, mechanical variables during running, and distances covered during walking, jogging, and running. The specific apps with evidence, along with reported measurement errors are summarized in the review. Although mobile apps may have the potential to collect data in the field, athletes and practitioners should exercise caution when implementing them into practice as not all apps have support from the literature, and the performance of a number of apps have only been tested on 1 device.
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Affiliation(s)
- Daniel J Peart
- Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle-upon-Tyne, United Kingdom
| | | | - Matthew P Shaw
- Department of Sport, management and Outdoor Education, University of Worcester, UK
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López-Samanes Á, G. Pallarés J, Pérez-López A, Mora-Rodríguez R, Ortega JF. Hormonal and neuromuscular responses during a singles match in male professional tennis players. PLoS One 2018; 13:e0195242. [PMID: 29624621 PMCID: PMC5889166 DOI: 10.1371/journal.pone.0195242] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/19/2018] [Indexed: 12/23/2022] Open
Abstract
We sought to measure the response of cortisol concentrations around a professional tennis match and its association with hydration status and neuromuscular performance. Nine professional male tennis players were tested in a rest day, and 2-week after, during the first match of a professional tournament played in a clay-court. Salivary concentrations of cortisol (SalCC) were measured in a resting day (9:00 am and 8:00 pm), at the match day (9:00 am and 8:00 pm) and immediately before and after the match. Hydration status was assessed before the match (urine specific gravity; USG) while fluid turnover was tracked during the match. Finally, counter movement jump (CMJ) and handgrip isometric strength (HS) were measured before and after the match. SalCC, either in the morning (P = 0.161) and afternoon (P = 0.683) was similar in rest and match days. However, SalCC increased after the match (P = 0.033). Participants started the match hypohydrated (USG = 1.026±0.002) and during the match lost 1.0±0.3% of body weight despite 1.035±0.124 L/h of fluid ingested. CMJ and HS did not change post-match (P = 0.210 and P = 0.881, respectively). Correlations between the elevations in SalCC and dehydration (% BW loss) during the match were significant (r = -0.632; P = 0.034). Professional male tennis players did not show an anticipatory increase in SalCC the day of the match and neither signs of neuromuscular fatigue after it. During the match, the mild dehydration (i.e., <1.5%) was associated with the increases in cortisol levels which suggests that dehydration may be an added stress to be considered.
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Affiliation(s)
- Álvaro López-Samanes
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
- School of Physiotherapy, Faculty of Health Sciences, Francisco de Vitoria University, Madrid, Spain
| | - Jesús G. Pallarés
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
- Faculty of Sports Sciences, University of Murcia, Murcia, Spain
| | - Alberto Pérez-López
- Departament of Medicine and Medical Specialties and Department of Biomedical Sciences. Faculty of Medicine and Health Science, University of Alcala, Madrid, Spain
| | - Ricardo Mora-Rodríguez
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
| | - Juan F. Ortega
- Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain
- * E-mail:
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Gallardo-Fuentes F, Gallardo-Fuentes J, Ramírez-Campillo R, Balsalobre-Fernández C, Martínez C, Caniuqueo A, Cañas R, Banzer W, Loturco I, Nakamura FY, Izquierdo M. Intersession and Intrasession Reliability and Validity of the My Jump App for Measuring Different Jump Actions in Trained Male and Female Athletes. J Strength Cond Res 2016; 30:2049-56. [PMID: 27328276 DOI: 10.1519/jsc.0000000000001304] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Gallardo-Fuentes, F, Gallardo-Fuentes, J, Ramírez-Campillo, R, Balsalobre-Fernández, C, Martínez, C, Caniuqueo, A, Cañas, R, Banzer, W, Loturco, I, Nakamura, FY, and Izquierdo, M. Intersession and intrasession reliability and validity of the My Jump app for measuring different jump actions in trained male and female athletes. J Strength Cond Res 30(7): 2049-2056, 2016-The purpose of this study was to analyze the concurrent validity and reliability of the iPhone app named My Jump for measuring jump height in 40-cm drop jumps (DJs), countermovement jumps (CMJs), and squat jumps (SJs). To do this, 21 male and female athletes (age, 22.1 ± 3.6 years) completed 5 maximal DJs, CMJs, and SJs on 2 separate days, which were evaluated using a contact platform and the app My Jump, developed to calculate jump height from flight time using the high-speed video recording facility on the iPhone. A total of 630 jumps were compared using the intraclass correlation coefficient (ICC), Bland-Altman plots, Pearson's product moment correlation coefficient (r), Cronbach's alpha (α), and coefficient of variation (CV). There was almost perfect agreement between the measurement instruments for all jump height values (ICC = 0.97-0.99), with no differences between the instruments (p > 0.05; mean difference of 0.2 cm). Almost perfect correlation was observed between the measurement instruments for SJs, CMJs, and DJs (r = 0.96-0.99). My Jump showed very good within-subject reliability (α = 0.94-0.99; CV = 3.8-7.6) and interday reliability (r = 0.86-0.95) for SJs, CMJs, and DJs in all subjects. Therefore, the iPhone app named My Jump provides reliable intersession and intrasession data, as well as valid measurements for maximal jump height during fast (i.e., DJs) and slow (i.e., CMJs) stretch-shortening cycle muscle actions, and during concentric-only explosive muscle actions (i.e., SJs), in both male and female athletes in comparison with a professional contact platform.
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Affiliation(s)
- Francisco Gallardo-Fuentes
- 1Department of Physical Activity Sciences, University of Los Lagos, Osorno, Chile; 2Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain; 3Department of Physical Education, Sport and Recreation, University of La Frontera, Temuco, Chile; 4Laboratory of Physiology and Biomechanics, University Autónoma de Chile, Temuco, Chile; 5Laboratory of Physiology, Department of Biological Sciences, Faculty of Biological Sciences, Andrés Bello University, Viña del Mar, Chile; 6School of Kinesiology, Faculty of Medicine, Diego Portales University, Viña del Mar, Chile; 7Department of Sports Medicine, Goethe-University, Frankfurt am Main, Germany; 8Nucleus of High Performance in Sport-NAR, São Paulo, Brazil; 9State University of Londrina, Londrina, Brazil; and 10Department of Health Sciences, Public University of Navarre, Pamplone, Spain
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Claudino JG, Cronin J, Mezêncio B, McMaster DT, McGuigan M, Tricoli V, Amadio AC, Serrão JC. The countermovement jump to monitor neuromuscular status: A meta-analysis. J Sci Med Sport 2016; 20:397-402. [PMID: 27663764 DOI: 10.1016/j.jsams.2016.08.011] [Citation(s) in RCA: 216] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 07/18/2016] [Accepted: 08/18/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVES The primary objective of this meta-analysis was to compare countermovement jump (CMJ) performance in studies that reported the highest value as opposed to average value for the purposes of monitoring neuromuscular status (i.e., fatigue and supercompensation). The secondary aim was to determine the sensitivity of the dependent variables. DESIGN Systematic review with meta-analysis. METHODS The meta-analysis was conducted on the highest or average of a number of CMJ variables. Multiple literature searches were undertaken in Pubmed, Scopus, and Web of Science to identify articles utilizing CMJ to monitor training status. Effect sizes (ES) with 95% confidence interval (95% CI) were calculated using the mean and standard deviation of the pre- and post-testing data. The coefficient of variation (CV) with 95% CI was also calculated to assess the level of instability of each variable. Heterogeneity was assessed using a random-effects model. RESULTS 151 articles were included providing a total of 531 ESs for the meta-analyses; 85.4% of articles used highest CMJ height, 13.2% used average and 1.3% used both when reporting changes in CMJ performance. Based on the meta-analysis, average CMJ height was more sensitive than highest CMJ height in detecting CMJ fatigue and supercompensation. Furthermore, other CMJ variables such as peak power, mean power, peak velocity, peak force, mean impulse, and power were sensitive in tracking the supercompensation effects of training. CONCLUSIONS The average CMJ height was more sensitive than highest CMJ height in monitoring neuromuscular status; however, further investigation is needed to determine the sensitivity of other CMJ performance variables.
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Affiliation(s)
- João Gustavo Claudino
- University of São Paulo, School of Physical Education and Sport-Laboratory of Biomechanics, Brazil; Auckland University of Technology, Sport Performance Research Institute, New Zealand.
| | - John Cronin
- Auckland University of Technology, Sport Performance Research Institute, New Zealand; Edith Cowan University, School of Exercise and Health Sciences, Australia
| | - Bruno Mezêncio
- University of São Paulo, School of Physical Education and Sport-Laboratory of Biomechanics, Brazil
| | | | - Michael McGuigan
- Auckland University of Technology, Sport Performance Research Institute, New Zealand; Edith Cowan University, School of Exercise and Health Sciences, Australia
| | - Valmor Tricoli
- University of São Paulo, School of Physical Education and Sport-Laboratory of Adaptations to Strength Training, Brazil
| | - Alberto Carlos Amadio
- University of São Paulo, School of Physical Education and Sport-Laboratory of Biomechanics, Brazil
| | - Julio Cerca Serrão
- University of São Paulo, School of Physical Education and Sport-Laboratory of Biomechanics, Brazil
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Balsalobre-Fernández C, Glaister M, Lockey RA. The validity and reliability of an iPhone app for measuring vertical jump performance. J Sports Sci 2015; 33:1574-9. [DOI: 10.1080/02640414.2014.996184] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - Mark Glaister
- School of Sport, Health and Applied Science, St Mary’s University, Twickehnham, United Kingdom
| | - Richard Anthony Lockey
- School of Sport, Health and Applied Science, St Mary’s University, Twickehnham, United Kingdom
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