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Samarein MR, Samanipour MH, Asjodi F, Shokati P, Fallahi Z, Brownlee TE, Brito JP, Bragazzi NL, Oliveira R. Comparisons and associations among anthropometric indices of first and second division and assistant soccer referees. Front Psychol 2023; 14:1149779. [PMID: 37885737 PMCID: PMC10598771 DOI: 10.3389/fpsyg.2023.1149779] [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: 01/23/2023] [Accepted: 08/29/2023] [Indexed: 10/28/2023] Open
Abstract
Introduction Body composition is an important predictor of performance and a key component of health and physical fitness. Therefore, the purposes of this study were to compare soccer referees of the first and second divisions and field assistant referees from Iran and to analyze associations of a body shape index (ABSI), body adiposity index (BAI), abdominal volume index (AVI), body roundness index (BRI), conicity index (ConI), and body mass index (BMI) with body fat percentage (%BF). Methods A total of 270 male soccer referees from the first (n = 124) and second (n = 72) divisions and assistant referees (n = 74) participated in this study. Skinfold thickness (measured at the chest, biceps, triceps, subscapular, abdominal, iliac crest, and front thigh), height, weight, hip circumference, and waist circumference were assessed to evaluate waist-to-height ratio (WHtR), %BF, and also ABSI, BRI, BAI, ConI, and AVI according to the ISAK protocol. Results The main results indicated differences in WHR, WHtR, ABSI, BRI, AVI, ConI, and BF% with the assistant referees presenting higher values (p < 0.05). When considering the backward selection model, there were some associations with %BF in each group, specifically BMI, BAI, and ABSI in the first division; BMI, WHR, and ABSI in the second division; and BMI in the assistant referee group (all p < 0.05). Discussion The present study did not confirm the hypothesis that the first-division referees presented better body composition-related variables than the second division or assistant referees. Instead, it showed that the assistant referees that participated in both divisions showed a tendency to higher values which suggests that the level of division is not a major factor when analyzing body composition.
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Affiliation(s)
| | | | - Foad Asjodi
- Iran Football Medical Assessment and Rehabilitation Center (IFMARK), FIFA Medical Center of Excellence, Tehran, Iran
| | - Pooya Shokati
- Department of Exercise Physiology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Zanyar Fallahi
- Department of Sport Injury, Faculty of Physical Education and Sport Sciences, Tehran University, Tehran, Iran
| | - Thomas E. Brownlee
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - João Paulo Brito
- Sports Science School of Rio Maior–Polytechnic Institute of Santarém, Rio Maior, Portugal
- Life Quality Research Centre, Rio Maior, Portugal
- Research Center in Sport Sciences, Health Sciences and Human Development, Vila Real, Portugal
| | - Nicola Luigi Bragazzi
- Department of Mathematics and Statistics, Laboratory for Industrial and Applied Mathematics (LIAM), York University, Toronto, ON, Canada
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Medical School, Parma, Italy
| | - Rafael Oliveira
- Sports Science School of Rio Maior–Polytechnic Institute of Santarém, Rio Maior, Portugal
- Life Quality Research Centre, Rio Maior, Portugal
- Research Center in Sport Sciences, Health Sciences and Human Development, Vila Real, Portugal
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Michalik K, Smolarek M, Ochmann B, Zatoń M. Determination of optimal load in the Wingate Anaerobic Test is not depend on number of sprints included in mathematical models. Front Physiol 2023; 14:1146076. [PMID: 37324399 PMCID: PMC10265113 DOI: 10.3389/fphys.2023.1146076] [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: 01/16/2023] [Accepted: 05/16/2023] [Indexed: 06/17/2023] Open
Abstract
Determining the optimal load (OPTLOAD) in measuring mechanical peak power output (PPO) is important in assessment of anaerobic fitness. The main goals of this study were: 1) to examine estimated optimal load and PPO based on a force-velocity test and 2) to compare the PPO from the previous method with the Wingate Anaerobic Test (WAnT). The study involved 15 academic male athletes, aged 22.4 ± 2.3 (years), height 178.9 ± 6.8 (cm), and body weight 77.9 ± 12.2 (kg). They performed the 30-s WAnT (7.5% of body weight) during the first visit to the laboratory. Second to fourth session included a force-velocity test (FVT) involving three, 10-s all-out sprints. A randomized load ranging from 3 to 11 kg was used in each session for FVT. The OPTLOAD and PPO were computed using quadratic relationships based on power-velocity (P-v) and power-percent of body weight (P-%BM) and including three, four, five and nine sprints from FVT. The results showed non-difference in OPTLOAD [13.8 ± 3.2 (%BM); 14.1 ± 3.5 (%BM); 13.5 ± 2.8 (%BM); 13.4 ± 2.6 (%BM)] executed at three, four, five, and nine sprints (F3,56 = 0.174, p = 0.91, η2 = 0.01). The two-way ANOVA revealed that PPO were similar between tested models (P-%BM vs. P-v) independently from the numbers of sprints (F3,112 = 0.08, p = 0.99, η2 = 0.000). Moreover, the PPO measured in the WAnT (870.6 ± 179.1 W) was significantly lower compared with in P-v model (1,102.9 ± 242.5-1,134.2 ± 285.4 W) (F4,70 = 3.044, p = 0.02, η2 = 0.148). In addition, the PPO derived from P-%BM model (1,105.2 ± 245.5-1,138.7 ± 285.3 W) was significantly higher compared with the WAnT (F4,70 = 2.976, p = 0.02, η2 = 0.145). The findings suggest the potential utility of FVT for assessment of anaerobic capacity.
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Affiliation(s)
- Kamil Michalik
- Department of Human Motor Skills, Faculty of Physical Education and Sport, Wroclaw University of Health and Sport Sciences, Wrocław, Poland
| | - Marcin Smolarek
- Department of Human Motor Skills, Faculty of Physical Education and Sport, Wroclaw University of Health and Sport Sciences, Wrocław, Poland
| | - Bartosz Ochmann
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Wroclaw University of Health and Sport Sciences, Wrocław, Poland
| | - Marek Zatoń
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Wroclaw University of Health and Sport Sciences, Wrocław, Poland
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Neuls F, Botek M, Krejčí J, Sigmund M. Comparison of selected performance-associated parameters after off-season and two-month training preparation in professional Czech ice hockey players. ACTA GYMNICA 2023. [DOI: 10.5507/ag.2023.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
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Lai YK, Ho CY, Lai CL, Taun CY, Hsieh KC. Assessment of Standing Multi-Frequency Bioimpedance Analyzer to Measure Body Composition of the Whole Body and Limbs in Elite Male Wrestlers. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15807. [PMID: 36497879 PMCID: PMC9739566 DOI: 10.3390/ijerph192315807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/20/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
We investigated differences in body composition measurements for the whole body and limb segments in elite male wrestlers between results of multi-frequency bioelectrical impedance analyses (MFBIA) and dual energy X-ray absorptiometry (DXA). Sixty-six elite male wrestlers from Taiwan were recruited. Wrestlers' body fat percentage (PBFWB), whole body fat-free mass (FFMWB), whole body lean soft tissue mass (LSTMWB), and fat-free mass of arms, legs and trunk (FMArms, FFMLegs, FFMTrunk) were measured by MFBIA and DXA, and analyzed using Pearson correlation coefficient and Bland-Altman plot. Correlations of FFMWB, LSTMWB, and PBFWB between devices were 0.958, 0.954, and 0.962, respectively. Limits of agreement (LOA) of Bland-Altman plot were -4.523 to 4.683 kg, -4.332 to 4.635 kg and -3.960 to 3.802%, respectively. Correlations of body composition parameters FFMArms, FFMLegs and FFMTurnk between devices in each limb segment were 0.237, 0.809, and 0.929, respectively; LOAs were -2.877 to 2.504 kg, -7.173 to -0.015 kg and -5.710 to 0.777 kg, respectively. Correlation and consistency between the devices are high for FFM, LSTM and PBF but relatively low for limb segment FFM. MFBIA may be an alternative device to DXA for measuring male wrestlers' total body composition but limb segment results should be used cautiously.
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Affiliation(s)
- Yeong-Kang Lai
- College of Electrical Engineering, National Chung Hsing University, Taichung 40227, Taiwan
| | - Chu-Ying Ho
- College of Electrical Engineering, National Chung Hsing University, Taichung 40227, Taiwan
| | - Chung-Liang Lai
- Department of Physical Medicine and Rehabilitation, Puzi Hospital, Ministry of Health and Welfare, Chiayi 61347, Taiwan
- Department of Occupational Therapy, Asia University, Taichung 41354, Taiwan
| | - Chih-Yang Taun
- Department of Exercise Health Science, National Taiwan University of Sport, Taichung 40404, Taiwan
| | - Kuen-Chang Hsieh
- Department of Research and Development, Starbia Meditek Co., Ltd., Taichung 40227, Taiwan
- Big Data Center, National Chung Hsing University, Taichung 40227, Taiwan
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Resta T, Frenette S, Rizk A, Fortin M. Body Composition Asymmetries in University Ice Hockey Players and Their Implications for Lower Back Pain and Leg Injury. J Strength Cond Res 2022; 36:2830-2836. [PMID: 36135032 DOI: 10.1519/jsc.0000000000004328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
ABSTRACT Resta, T, Frenette, S, Rizk, A, and Fortin, M. Body composition asymmetries in university ice hockey players and their implications for lower back pain and leg injury. J Strength Cond Res 36(10): 2830-2836, 2022-Right to left asymmetries in body composition have been examined across many sports, suggesting possible implications for lower back pain (LBP) and decreased level of performance. However, we are not aware of any study that has examined the presence and implications of morphological asymmetries in ice hockey players. The purpose of this study was to (a) investigate body composition asymmetries in female and male university-level ice hockey players and (b) examine whether the degree of body composition asymmetry is associated with the history of LBP and lower-limb injury (LLI). A total of 32 players (female = 18, male = 14) were included in this cross-sectional study (e.g., university research center setting). Dual-energy X-ray absorptiometry (DEXA) was used to acquire body composition measurements. The parameters of interest included bone mass, lean body mass, and fat mass, for the right and left sides and body segments (e.g., arm, leg, trunk, and total), separately. The history of LBP and LLI was obtained using a self-reported demographic questionnaire. The statistical significance for the study was set at p < 0.05. Our findings revealed significant side-to-side asymmetry in arm and total bone mass in females, with higher values on the right side. Both males and females also had significantly greater trunk lean body mass on the left side. With the exception of greater arm bone mass asymmetry being associated with LBP in the past 3 months, there was no other significant association between the degree of asymmetry with LBP and LLI. This study provides novel data regarding the presence of asymmetry in body composition in university-level ice hockey players. Monitoring body composition in athletes provides information that can be used by athletic trainers and strength and conditioning coaches to develop injury prevention, performance optimization, and targeted rehabilitation programs.
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Affiliation(s)
- Tiziana Resta
- Department of Biology, Concordia University, Montreal, Quebec, Canada
| | | | - Amanda Rizk
- PERFORM Center, Concordia University, Montreal, Quebec, Canada
| | - Maryse Fortin
- PERFORM Center, Concordia University, Montreal, Quebec, Canada
- Department of Health, Kinesiology & Applied Physiology, Concordia University, Montreal, Quebec, Canada ; and
- Center de Recherche Interdisciplinaire en Réadaptation (CRIR), Montreal, Quebec, Canada
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Ferraz A, Valente-Dos-Santos J, Duarte-Mendes P, Nunes C, Victorino S, Coelho-e-Silva MJ, Travassos B. Body composition and grip strength constraints in elite male rink-hockey players of contrasting ethnicity. PLoS One 2022; 17:e0274894. [PMID: 36137120 PMCID: PMC9499211 DOI: 10.1371/journal.pone.0274894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022] Open
Abstract
Rink hockey is a highly specialized and physiological demanding sport with sparse research regarding the game and athletes’ characteristics. A cross-sectional study was developed to characterize the body composition and grip strength of elite male rink hockey players and to establish the relationship between ethnicity on body composition and grip strength. A sample of 100 elite rink-hockey athletes aged 26.59 ± 6.02 participated in the study, comprised of 69 Caucasian male adults aged 27.58 ± 6.44 years and 31 Black African male adults aged 24.39 ± 4.27. Body composition was assessed by anthropometric measurements. Static grip strength was assessed with an adjustable dynamometer. Multiple regression analysis was applied to understand which variables constraints body fat percentage (BF) and grip strength. Body mass showed an average of 76.36 ± 9.18 kg for 175.80 ± 5.87 cm of height and BF% of 10.82 ± 5.07%. Maximal right grip strength was 50.91 ± 6.26 kg and 50.27 ± 6.23 kg for left grip strength. Four predictors accounted for 70.01% of the variance of BF%: abdominal circumference (p < 0.001), right thigh circumference (p < 0.001), right calf circumference (p = 0.001) and ethnicity (p = 0.016). Three predictors accounted for 13.1% of the variance of right grip strength: ethnicity (p = 0.013), chronological age (p = 0.024) and right distal thigh circumference (p = 0.014). Results suggest that elite rink hockey athletes have a specific anthropometric identity, which at the elite level may lead to reduced body fat and greater handgrip strength. Ethnicity seems to predict body fat and grip strength in elite rink hockey athletes.
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Affiliation(s)
- António Ferraz
- CIFD, Sports Research and Training Center, Jean Piaget University of Angola, Luanda, Angola
- CIDESD, Research Center in Sports Sciences, Health Sciences and Human Development, Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal
- * E-mail:
| | - João Valente-Dos-Santos
- Faculty of Physical Education and Sport, Lusófona University, Lisbon, Portugal
- University of Coimbra, FCDEF Coimbra, Coimbra, Portugal
- University of Coimbra, CIDAF Coimbra, Coimbra, Portugal
| | - Pedro Duarte-Mendes
- Department of Sport and Well Being, Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal
- Sport, Health and Exercise Research Unit—SHERU, Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal
| | - Célia Nunes
- Department of Mathematics and Center of Mathematics and Applications, University of Beira Interior, Covilhã, Portugal
| | - Samuel Victorino
- CIFD, Sports Research and Training Center, Jean Piaget University of Angola, Luanda, Angola
| | - Manuel J. Coelho-e-Silva
- University of Coimbra, FCDEF Coimbra, Coimbra, Portugal
- University of Coimbra, CIDAF Coimbra, Coimbra, Portugal
| | - Bruno Travassos
- CIDESD, Research Center in Sports Sciences, Health Sciences and Human Development, Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal
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Abstract
This study aimed to explore relationships between fitness, on-ice physical abilities and game performance among elite junior male ice hockey players. Twenty-one major junior ice hockey players (18.9 ± 1.4 years old) participated in the study. Measures including five fitness tests (anthropometric measures, pull up test, bench press test, broad jump, vertical jump) and three on-ice skating tests (multi-stage aerobic skating test, 44-m sprint test, and backward skating test) were assessed during their pre-season training camp. Game performance metrics (collected during the regular season) were collected using InStat software. Results of the (on-ice and off-ice) functional performance test protocol and on-ice tests were analyzed by evaluating correlation coefficients in multiple areas of game performance: 1) physical implication (body checks), 2) offensive contribution (expected goals for, types of zone entries), and 3) defensive actions (blocked shots, expected goals against). They revealed that performance in the broad jump test was associated with skating speed. Some significant correlations were also observed between on-ice test performance indicators such as received body checks, expected goals and blocked shots. In summary, results indicate that on-ice test protocols were associated with players’ performance in multiple aspects of the game. Partial correlation analyses revealed that some of these relationships were specific to the player's position. Forward skating was associated with forwards’ offensive play, and backward skating was specifically related with defensemen’s performance (offense and defense). The addition of on-ice physical tests appears essential for interpreting the results of ice hockey players' physical tests and integrating these results into players’ physical preparation and the in-season follow-up.
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Elite Adolescent Ice Hockey Players: Analyzing Associations between Anthropometry, Fitness, and On-Ice Performance. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19158952. [PMID: 35897327 PMCID: PMC9330307 DOI: 10.3390/ijerph19158952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 11/16/2022]
Abstract
In the field of ice hockey, body mass and height have always played a role in team selection. This study aims to analyze the associations between anthropometry and multiple dimensions of performance among elite adolescent ice hockey players. Methods: 187 adolescent players (males: n = 80, 13.81 years; females: n = 107, 14.96 years) took part in the study, in Camp 1. Off-ice fitness and on-ice skating tests were performed. Camp 2 consists of on-ice tests and match performance with players selected by coaching staff at Camp 1. Camp 2 data came from official matches performance and a combination of skating tests and intrasquad matches. Hockey Quebec’s selection process consists of going from an entire pool of athletes to a team of twenty-five players, through several camps spread over two years. Correlation analyses were conducted to verify associations between anthropometric measures and performances. Results: In Camp 1, heavier-taller male athletes displayed better performances in most off-ice fitness tests, while heavier female athletes tended to display poorer performance. Camp 2 showed no significant correlations in on-ice tests and match performance. However, some tendencies were observed: heavier male players were less involved in blocked shots, and taller females were more agile. Conclusions: Despite off-ice advantages, the taller-heavier prototype does not translate directly to better performance on the ice among elite adolescent players. Coaches should analyze anthropometric characteristics with caution, and place more focus on match-specific abilities to identify talent.
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Lemoyne J, Brunelle JF, Huard Pelletier V, Glaude-Roy J, Martini G. Talent Identification in Elite Adolescent Ice Hockey Players: the Discriminant Capacity of Fitness Tests, Skating Performance and Psychological Characteristics. Sports (Basel) 2022; 10:sports10040058. [PMID: 35447868 PMCID: PMC9026156 DOI: 10.3390/sports10040058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 03/29/2022] [Accepted: 04/04/2022] [Indexed: 12/03/2022] Open
Abstract
Background: The process of talent identification in ice hockey occurs during middle adolescence when players are selected to participate in “off-season” evaluation camps, where coaches observe their fitness levels and status of development. Recently, the Quebec ice hockey federation opted for a holistic approach by evaluating players based on three criteria: (1) fitness, (2) skating abilities and (3) personality traits and psychological assets. This study aimed to analyze the discriminant validity of a multi-dimensional talent identification testing protocol in competitive ice hockey. Method: Data were collected from 160 adolescent hockey players who took part in Team Quebec summer evaluation camps. Off-ice fitness, skating abilities and psychological variables were measured on two consecutive days. Descriptive statistics, group comparisons (gender, positions) and discriminant analyses (selected versus non-selected) were performed. Results: No differences were observed among males in which selected players were similar to non-selected. Results from discriminant analyses also showed no discriminant function for male players. For females, selected players displayed higher fitness, on-ice agility and psychological characteristics. Nine performance markers were significantly discriminant. Conclusions: A holistic evaluation protocol allows for the discrimination of selected and non-selected players in elite ice hockey. Developing more discriminant tests is a promising avenue of research in male ice hockey. Knowing the factors that are associated with team selection in competitive ice hockey allow to focus on the specific attributes to work with young promising players.
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Affiliation(s)
- Jean Lemoyne
- Department of Human Kinetics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (V.H.P.); (G.M.)
- Laboratoire de Recherche sur le Hockey de l’UQTR, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (J.-F.B.); (J.G.-R.)
- Correspondence:
| | - Jean-François Brunelle
- Laboratoire de Recherche sur le Hockey de l’UQTR, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (J.-F.B.); (J.G.-R.)
- Service de l’Activité Physique et Sportive, Université du Québec à Trois-Rivières [UQTR], 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada
| | - Vincent Huard Pelletier
- Department of Human Kinetics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (V.H.P.); (G.M.)
- Laboratoire de Recherche sur le Hockey de l’UQTR, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (J.-F.B.); (J.G.-R.)
| | - Julien Glaude-Roy
- Laboratoire de Recherche sur le Hockey de l’UQTR, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (J.-F.B.); (J.G.-R.)
- Service de l’Activité Physique et Sportive, Université du Québec à Trois-Rivières [UQTR], 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada
| | - Gaëtan Martini
- Department of Human Kinetics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (V.H.P.); (G.M.)
- Laboratoire de Recherche sur le Hockey de l’UQTR, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada; (J.-F.B.); (J.G.-R.)
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Body composition adaptations to lower-body plyometric training: a systematic review and meta-analysis. Biol Sport 2022; 39:273-287. [PMID: 35309540 PMCID: PMC8919888 DOI: 10.5114/biolsport.2022.104916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/25/2020] [Accepted: 03/01/2021] [Indexed: 01/01/2023] Open
Abstract
The aim of this meta-analysis was to explore the effects of plyometric jump training (PJT) on body composition parameters among males. Relevant articles were searched in the electronic databases PubMed, MEDLINE, WOS, and SCOPUS, using the key words “ballistic”, “complex”, “explosive”, “force-velocity”, “plyometric”, “stretch-shortening cycle”, “jump”, “training”, and “body composition”. We included randomized controlled trials (RCTs) that investigating the effects of PJT in healthy male’s body composition (e.g., muscle mass; body fat), irrespective of age. From database searching 21 RCTs were included (separate experimental groups = 28; pooled number of participants = 594). Compared to control, PJT produced significant increases in total leg muscle volume (small ES = 0.55, p = 0.009), thigh muscle volume (small ES = 0.38, p = 0.043), thigh girth (large ES = 1.78, p = 0.011), calf girth (large ES = 1.89, p = 0.022), and muscle pennation angle (small ES = 0.53, p = 0.040). However, we did not find significant difference between PJT and control for muscle cross-sectional area, body fat, and skinfold thickness. Heterogeneity remained low-to-moderate for most analyses, and using the Egger’s test publication bias was not found in any of the analyses (p = 0.300–0.900). No injuries were reported among the included studies. PJT seems to be an effective and safe mode of exercise for increasing leg muscle volume, thigh muscle volume, thigh and calf girth, and muscle pennation angle. Therefore, PJT may be effective to improve muscle size and architecture, with potential implications in several clinical and sport-related contexts.
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Czeck MA, Roelofs EJ, Dietz C, Bosch TA, Dengel DR. Body Composition and On-Ice Skate Times for National Collegiate Athletic Association Division I Collegiate Male and Female Ice Hockey Athletes. J Strength Cond Res 2022; 36:187-192. [PMID: 34941612 DOI: 10.1519/jsc.0000000000004175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Czeck, MA, Roelofs, EJ, Dietz, C, Bosch, TA, and Dengel, DR. Body composition and on-ice skate times for NCAA Division I collegiate male and female ice hockey athletes. J Strength Cond Res 36(1): 187-192, 2022-This study's purpose was to explore positional differences for an on-ice timed skate test and its relationship to body composition. Male (n = 15) and female (n = 18) collegiate hockey players participated in this study (total n = 33). Each player was categorized by position of forward or defensemen. Dual x-ray absorptiometry assessed total body composition variables of lean, fat, and bone mass as well as regional measures of lean mass, fat mass, and visceral adipose tissue. Total time and section times were determined for the on-ice skating test through a gated automatic timing system at 9, 18, 24, 42, 48, 66, 82, 132, and 148 m. Analysis of variance and Tukey's honest significance difference assessed on-ice skate time differences between positions (p ≤ 0.05). Correlations between body composition variables and skate times were determined for change of direction, skating time, linear skate time, and total skate time. There were no significant differences between positions for skate times (p > 0.05). Body fat percent (p = 0.007; r = 0.55), total fat mass (p = 0.027; r = 0.46), and leg fat mass (p = 0.019; 0.49) were significantly correlated with total skate time in men, whereas only body fat percent was significantly correlated with change of direction (p = 0.022; r = 0.54) and total skate times (p = 0.016; r = 0.56) in women. The total upper-body mass to leg lean mass ratio was significantly correlated with change of direction (p = 0.036; r = 0.50) in women. In conclusion, the results from this study suggest no differences between on-ice skating times between forwards and defensemen. However, body fat percentage was correlated with on-ice skate times in male and female collegiate hockey players.
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Affiliation(s)
- Madeline A Czeck
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota
| | - Erica J Roelofs
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota
| | - Calvin Dietz
- Athletic Department, University of Minnesota, Minneapolis, Minnesota; and
| | - Tyler A Bosch
- Performance & Data Analytics, Red Bull Athlete Performance Center, Santa Monica, California
| | - Donald R Dengel
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota
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Ferland PM, Marcotte-L'Heureux V, Roy P, Carey VD, Charron J, Lagrange S, Leone M, Comtois AS. Maximal Oxygen Consumption Requirements in Professional North American Ice Hockey. J Strength Cond Res 2021; 35:1586-1592. [PMID: 33555827 DOI: 10.1519/jsc.0000000000003966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Ferland, P-M, Marcotte-L'Heureux, V, Roy, P, Carey, V, Charron, J, Lagrange, S, Leone, M, and Comtois, AS. Maximal oxygen consumption requirements in professional North American ice hockey. J Strength Cond Res 35(4): 1586-1592, 2021-This study was designed to measure preseason on-ice relative V̇o2max of professional ice-hockey players (n = 101 National Hockey League [NHL], 42 American Hockey League [AHL], 4 East Coast Hockey League [ECHL], and 15 Canadian Hockey League [CHL]) throughout 17 years and compare it between generations, league level, and position, and to verify if it was related to season and NHL career statistics. Relative V̇o2max was measured on ice with a portable metabolic analyzer (K4b2, Cosmed, Rome) with full hockey equipment, except for the helmet with either the Skating Multistage Aerobic Test or the 30-15 intermittent ice test tests. Relative V̇o2max results from both tests were compared between players of the same generation with an independent-samples T-test and were not significantly different. A one-way analysis of variance and post hoc pairwise tests were performed to detect significant differences between groups. Pearson correlations (two-tailed) were also performed between selected variables. All statistical significance was set at p < 0.05. Results show that there are no significant differences for relative V̇o2max between generations (2001-2003 vs. 2006 vs. 2015-2017), league level (NHL vs. AHL vs. ECHL vs. CHL), and position (winger, center, and defense), other than the ECHL being lower. There are also no significant relationships between V̇o2max values and hockey season and NHL career statistics. Thus, the results show that there is a minimal relative V̇o2max requirement to play North American ice hockey at the elite level (55.9 ± 5.2 ml·kg-1·min-1; n = 162). Future research should be directed toward comparing V̇o2max of elite and amateur ice-hockey players to confirm the minimal relative V̇o2max requirement to play North American ice hockey at the elite level.
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Affiliation(s)
- Pierre-Marc Ferland
- Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada ; and
| | - Viviane Marcotte-L'Heureux
- Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada ; and
| | - Philippe Roy
- Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada ; and
| | - Vincent D Carey
- Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada ; and
| | - Jérémie Charron
- Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada ; and
| | - Sébastien Lagrange
- Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada ; and
| | - Mario Leone
- Department of Health Sciences, University of Quebec in Chicoutimi, Chicoutimi, Quebec, Canada
| | - Alain Steve Comtois
- Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada ; and
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13
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Dengel DR, Roelofs EJ, Czeck MA, Bosch TA. Male and Female Collegiate Ice Hockey Athletes' Body Composition Over Competitive Seasons. Int J Sports Med 2021; 42:1313-1318. [PMID: 34015836 DOI: 10.1055/a-1489-8188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Eighty-three male and female (49/34) athletes underwent determination of total fat mass (FM), lean mass (LM), bone mineral density (BMD) and visceral adipose tissue (VAT) by dual X-ray absorptiometry during the pre-season, in-season and off-season. Athletes were classified by position of Goalie (G; M/F=7/6), Forward (F; M/F=26/18), or Defenseman (D; M/F=16/10). In males, all positions were similar in weight, FM, LM, BMD and VAT. In females, F weighed less than D and G. FM and VAT was lower in F than D and G, but D was not different from G. LM was lower in F compared to D, but not G, with no differences between D and G. There were no differences in BMD between positions. There were no seasonal changes in males for body composition variables. In females, FM, LM and VAT decreased from pre-season to in-season, while BMD increased. From in-season to off-season, LM increased and BMD decreased. From off-season to pre-season, FM and VAT increased. In conclusion, there were no differences across position or seasonal changes in body composition in males. However, there were positional and seasonal changes in body composition in females, indicating possible differences in training regimens during the off-season compared to males.
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Affiliation(s)
- Donald R Dengel
- School of Kinesiology, University of Minnesota, Minneapolis, United States
| | - Erica J Roelofs
- School of Kinesiology, University of Minnesota, Minneapolis, United States
| | - Madeline A Czeck
- School of Kinesiology, University of Minnesota, Minneapolis, United States
| | - Tyler A Bosch
- Performance & Data Analytics, Red Bull Athlete Performance Center, Santa Monica, United States
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14
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Bonilla DA, De León LG, Alexander-Cortez P, Odriozola-Martínez A, Herrera-Amante CA, Vargas-Molina S, Petro JL. Simple anthropometry-based calculations to monitor body composition in athletes: Scoping review and reference values. Nutr Health 2021; 28:95-109. [PMID: 33792415 DOI: 10.1177/02601060211002941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Kinanthropometry offers to exercise and health professionals a standardized procedure of acquiring surface anatomical measurements that might be used to track changes in body composition. AIM To describe simple anthropometric indices to monitor body composition changes in amateur and elite athletes, and to provide reference values during the competition phase. METHODS A search of articles indexed in PubMed/MEDLINE, ScienceDirect, Cochrane, and SciELO databases using the string body composition AND (anthropometric OR skinfolds OR circumferences OR girth OR estimation equation) AND "body fat". Inclusion criteria were: quantitative and/or qualitative research published between 2009 and 2020, written in English or Spanish, reporting simple anthropometric indices that included skinfolds, girths, or basic measures in amateur and elite athletes. RESULTS A total of 51 studies (Price's index = 66.4%) met all the inclusion criteria and were included in this scoping review. Contrary to the frequent practice, the use of a regression equation might not be accurate to evaluate body composition. To avoid this, anthropometrists should base their analysis on the absolute values of the sum of skinfolds (∑S) and related variables, such as skinfold-corrected girths and lean mass index. While not definitive, because further research is required, the practical recommendations and updated reference values in competition phase provided by this review would contribute to the accurate identification of body composition changes. CONCLUSIONS ∑S and lean mass index have been shown to be valid for monitoring changes in fat mass and fat-free mass, respectively. More research is needed to derive the lean mass index-specific coefficient for each sports population.
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Affiliation(s)
- Diego A Bonilla
- Research Division, DBSS International, Colombia.,Research Group in Biochemistry and Molecular Biology, Universidad Distrital Francisco José de Caldas, Colombia.,Research Group in Physical Activity, Sports and Health Sciences (GICAFS), Universidad de Córdoba, Colombia.,kDNA Genomics®, 200145University of the Basque Country UPV/EHU, Spain
| | - Lidia G De León
- Facultad de Ciencias de la Cultura Física, 27763Universidad Autónoma de Chihuahua, México
| | | | | | | | | | - Jorge L Petro
- Research Division, DBSS International, Colombia.,Research Group in Physical Activity, Sports and Health Sciences (GICAFS), Universidad de Córdoba, Colombia
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Abstract
The body composition phenotype of an athlete displays the complex interaction among genotype, physiological and metabolic demands of a sport, diet, and physical training. Observational studies dominate the literature and describe the sport-specific physique characteristics (size, shape, and composition) of adult athletes by gender and levels of competition. Limited data reveal how body composition measurements can benefit an athlete. Thus, the objective is to identify purposeful measurements of body composition, notably fat and lean muscle masses, and determine their impact on the health and performance of athletes. Areas of interest include relationships among total and regional body composition measurements, muscle function, sport-specific performance, risk of injury, return to sport after injury, and identification of activity-induced fluid shifts. Discussion includes the application of specific uses of dual X-ray absorptiometry and bioelectrical impedance including an emphasis on the need to minimize measurement errors and standardize protocols, and highlights opportunities for future research. This focus on functional body composition can benefit the health and optimize the performance of an athlete.
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Affiliation(s)
- Henry Lukaski
- Department of Kinesiology and Public Health Education, Hyslop Sports Center, University of North Dakota, Grand Forks, United States
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Syed-Abdul MM, Soni DS, Barnes JT, Wagganer JD. Comparative analysis of BIA, IBC and DXA for determining body fat in American Football players. J Sports Med Phys Fitness 2021; 61:687-692. [PMID: 33472346 DOI: 10.23736/s0022-4707.21.11278-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Body composition is frequently measured by sports, fitness, and healthcare professionals. Dual-Energy X-ray Absorptiometry (DXA) analysis is a validated measurement of body composition and is considered a criterion or "gold-standard" measurement. However, due to long scan times, accessibility and cost, conducting DXA scans on larger athletes (i.e., football players) is difficult. Hence fitness professionals, notably strength and conditioning coaches, typically use other methods to measure body composition. The aim of this study was to assess the accuracy of the Bioelectrical Impedance Analysis (BIA) and Integrative Body Composition (IBC) techniques to DXA body fat percent (BF%) in collegiate American Football players. METHODS Participants performed all three modes of body composition measurement: DXA, BIA (BIA-A [athlete]and BIA-NA [non-athlete modes]), and IBC, on the same day during early morning hours in a fasted state. RESULTS The BF% measured via all methods significantly correlated with BF% measured via DXA (i.e., BIA-A [P<0.001, r=0.903], BIA-NA [P<0.001, r=0.891], and IBC [P<0.001, r=0.867]). However, values obtained via BIA-A (athlete) (P<0.001) and IBC (P<0.001) methods under predicted BF%. CONCLUSIONS BIA and IBC can be used as an alternative to DXA for measuring BF% in American Football players. The BIA-A and IBC under predicted BF% compare to DXA, therefore, a correction formula can be utilized by coaches and athletes to predict BF% more accurately compared to IBC and BIA-A methods in American Football players.
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Affiliation(s)
- Majid M Syed-Abdul
- Department of Kinesiology, Nutrition, and Recreation, Southeast Missouri State University, Cape Girardeau, MO, USA -
| | - Dhwani S Soni
- Department of Kinesiology, Nutrition, and Recreation, Southeast Missouri State University, Cape Girardeau, MO, USA
| | - Jeremy T Barnes
- Department of Kinesiology, Nutrition, and Recreation, Southeast Missouri State University, Cape Girardeau, MO, USA
| | - Jason D Wagganer
- Department of Kinesiology, Nutrition, and Recreation, Southeast Missouri State University, Cape Girardeau, MO, USA
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Citius, Altius, Fortius; Is It Enough to Achieve Success in Basketball? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17207355. [PMID: 33050131 PMCID: PMC7601684 DOI: 10.3390/ijerph17207355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/28/2020] [Accepted: 09/29/2020] [Indexed: 11/29/2022]
Abstract
The NBA Draft Combine includes a series of standardized measurements and drills that provide NBA teams with an opportunity to evaluate players. The purpose of this research was to identify the Combine tests that explain draft position and future performance in the NBA rookie season. Variables were selected from the previous categories of anthropometric measurements and strength and agility tests. A regression analysis was carried out. Combine variables, anthropometric and agility/strength variables were analyzed to explore their effect on draft position. Moreover, correlation analyses were performed to identify relationships among: (i) Combine anthropometric and strength and agility measures and game performance through game related statistics; and (ii) the draft position and game performance using Pearson’s correlation coefficients. Results show that the Combine test does not predict draft position, with the exception of hand width and height in frontcourt players, and standard vertical jump and running vertical jump. Future performance indicators were explained by several Combine tests in all players.
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18
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Stanzione JR, Dardarian N, Volpe SL. Body Composition Changes after One Year in Professional Male Ice Hockey Players. Int J Sports Med 2020; 41:1056-1060. [PMID: 32693429 DOI: 10.1055/a-1179-6511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Body composition measurements remain one of the best objective ways to analyze tissue distribution in athletes. The purpose of this study was to establish an average body composition profile for professional male ice hockey players, assess the yearly fluctuations of body composition after a single season, and assess body composition changes among different positions. Body composition was measured using dual-energy X-ray absorptiometry in 36 professional male ice hockey players. Descriptive statistics were used to determine average values. A paired samples t-test was applied to determine differences over a one-year period. A one-way analysis of variance was used to determine differences between positions, at both time points. Alpha levels were set a priori at p<0.05. Significant increases were observed in percent body fat across time points for all positions (p=0.019). There were significant differences in percent body fat between positions played (p=0.012) after one year. We demonstrated that there was low variability among the different positions in professional male ice hockey players. Additionally, we observed how a single year minimally influences changes in body composition. More research is required to evaluate body composition in male ice hockey players.
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Affiliation(s)
- Joseph R Stanzione
- Department of Nutrition Sciences, Drexel University, Philadelphia, United States
| | - Nyree Dardarian
- Department of Nutrition Sciences, Drexel University, Philadelphia, United States
| | - Stella L Volpe
- Department of Nutrition Sciences, Drexel University, Philadelphia, United States
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Gross M, Lüthy F. Anaerobic Power Assessment in Athletes: Are Cycling and Vertical Jump Tests Interchangeable? Sports (Basel) 2020; 8:sports8050060. [PMID: 32397456 PMCID: PMC7281183 DOI: 10.3390/sports8050060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/29/2020] [Accepted: 05/06/2020] [Indexed: 01/09/2023] Open
Abstract
Regularly assessing anaerobic power is important for athletes from sports with an explosive strength component. Understanding the differences and overlap between different assessment methods might help coaches or smaller-scale testing facilities maximize financial and temporal resources. Therefore, this study investigated the degree to which cycling sprint and vertical jump tests are interchangeable for determining peak mechanical leg power output in strength-trained athletes. Professional skiers (n = 19) performed unloaded squat jumps (SJ) and other jump forms on a force plate and a six-second cycling sprint (6sCS) test on an ergometer on six occasions over two years. Along with cross-sectional correlations between cycling and jumping power, correlations between longitudinal percent changes and agreement between magnitude-based inferences about individual changes were assessed. Among the tested jump forms, SJ reflected 6sCS best. However, despite extremely large cross-sectional correlation coefficients (0.92) between 6sCS and SJ, and moderate (Pearson’s r = 0.32 for 6sCS with SJ over one-year time spans) to large (r = 0.68 over shorter time spans) correlation coefficients on percent changes, magnitude-based inferences agreed in only around 50% of cases. Thus, for making qualitative assessments about the development of anaerobic power over time in athletes, cycling sprint and squat jump tests are not interchangeable. Rather, we recommend employing the test form that best reflects athletes’ strength and conditioning training.
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Delisle-Houde P, Chiarlitti NA, Reid RER, Andersen RE. Predicting On-Ice Skating Using Laboratory- and Field-Based Assessments in College Ice Hockey Players. Int J Sports Physiol Perform 2019; 14:1184-1189. [PMID: 30840516 DOI: 10.1123/ijspp.2018-0708] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 01/16/2019] [Accepted: 01/25/2019] [Indexed: 10/27/2023]
Abstract
PURPOSE To determine the predictability of common laboratory/field and novel laboratory tests for skating characteristics in Canadian college ice hockey players. METHODS A total of 18 male hockey players from the university's varsity hockey team age 20-25 y (height 180.7 [6.4] cm, weight 87.1 [6.7] kg, and body fat 16.2% [4.0%]) completed common laboratory-/field-based testing (ie, standing long jump, vertical jump, off-ice proagility, V˙O2max, Wingate), novel laboratory-based testing (ie, Biodex dynamometer, dual-energy X-ray absorptiometry scan), and on-ice testing (ie, 30-m forward sprint, 30-m backward sprint, on-ice proagility). RESULTS Pearson correlations and stepwise regression revealed relationships between on-ice forward sprint and 4 off-ice tests (Wingate relative peak power [r = -.62, P < .01], standing long jump [r = -.45, P < .05], off-ice proagility left [r = .51, P < .05], and vertical jump impulse [r = .60, P < .01]). On-ice proagility left was correlated with off-ice proagility left (r = .47, P < .05), Wingate relative peak power (r = -.55, P < .01), and vertical jump impulse (r = -.53, P < .05). The 30-m backward skating test and the on-ice proagility right were not correlated with any off-ice test. CONCLUSION Commonly used laboratory/field tests are effective in predicting 2 important primary abilities in ice hockey.
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