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Specialty: Sports Medicine
Source: International Journal of Sports Medicine
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Total 39 results found since Jan 2013.
Predictors of Ball Velocity in the Sitting Volleyball Serve: A Causal
Analysis
This study explored the performance of the Sitting Volleyball serve by
investigating the causal factors associated with ball velocity. Thirty-seven
athletes underwent anthropometry and strength assessment and performed ten
successful maximal effort serves. Ball velocity was measured using a sports
radar gun. The hip, shoulder, elbow and wrist angles at the instant of ball
impact as well as the height of ball impact were estimated through
two-dimensional motion analysis. The causal relationships between variables were
described through a linear Structural Equation Model and a Directed Acyc...
Source: International Journal of Sports Medicine - May 19, 2023 Category: Sports Medicine Authors: Cavedon, Valentina Sandri, Marco Golia, Silva Brugnoli, Chiara Bol čević, Filip Zancanaro, Carlo Milanese, Chiara Tags: Training & Testing Source Type: research
Middle-distance Front Crawl Determinants When Using a
Wetsuit
Int J Sports Med DOI: 10.1055/a-1971-9008Our aim was to establish the determinants explaining the wetsuit advantages in
middle-distance swimming efforts. Thirty-one triathletes and open water swimmers
performed two 400 m front crawl bouts in a 25 m swimming pool
with swim and wetsuits (with 48 h rest in-between). Anthropometric,
kinematic and physiological variables were measured and Pearson correlation
coefficients and stepwise linear regression analysis were used to determine
their relationships. Associations observed in the 400 m front crawl
included time improved using wetsuit...
Source: International Journal of Sports Medicine - December 23, 2022 Category: Sports Medicine Authors: Gay, Ana Ruiz-Navarro, Jes ús J. Cuenca-Fern ández, Francisco L ópez-Belmonte, Óscar Fernandes, Ricardo J. Arellano, Ra úl Tags: Training & Testing Source Type: research
Manipulation of Stroke Rate in Swimming: Effects on Oxygen Uptake
Kinetics
Int J Sports Med DOI: 10.1055/a-1930-5462The study aimed to assess the effect of different front crawl stroke rates (SRs)
in the oxygen uptake (̇VO2) kinetics and ̇VO2 peak, the total time to
exhaustion (TTE), and blood lactate concentration ([La]) at 95% of the
400-m front crawl test (T400) mean speed (S400). Twelve endurance swimmers
performed a T400 and four trials at 95% of the S400: (i) free SR, (ii)
fixed SR (100% of the average free SR trial), (iii) reduced SR
(90% of the average free SR trial), and (iv) increased SR (110%
of the average free SR trial). ̇VO2 was accessed continu...
Source: International Journal of Sports Medicine - November 4, 2022 Category: Sports Medicine Authors: Franken, Marcos Figueiredo, Pedro De Assis Correia, Ricardo Feitosa, Wellington Gomes Lazzari, Caetano Decian Diefenthaeler, Fernando Castro, Fl ávio Souza Tags: Training & Testing Source Type: research
Manipulation of Stroke Rate in Swimming: Effects on Oxygen Uptake Kinetics
Int J Sports Med DOI: 10.1055/a-1930-5462The study aimed to assess the effect of different front crawl stroke rates (SR) in the oxygen uptake (V̇O2) kinetics and V̇O2 peak, the total time to exhaustion (TTE), and blood lactate concentration ([La]) at 95% of the 400-m front crawl test (T400) mean speed (S400). Twelve endurance swimmers performed a T400 and four trials at 95% of the S400: (i) free SR, (ii) fixed SR (100% of the average free SR trial), (iii) reduced SR (90% of the average free SR trial), and (iv) increased SR (110% of the average free SR trial). V̇O2 was accessed continuously with breath-by-breath analysis...
Source: International Journal of Sports Medicine - November 2, 2022 Category: Sports Medicine Authors: Franken, Marcos Figueiredo, Pedro Correia, Ricardo De Assis Feitosa, Wellington Gomes Lazzari, Caetano Decian Diefenthaeler, Fernando Castro, Fl ávio Souza Tags: Training & Testing Source Type: research
Muscle Oxygenation, Neural, and Cardiovascular Responses to Isometric and Workload-matched Dynamic Resistance Exercise
In conclusion, large muscle-mass, multiple-set isometric exercise elicits a relatively similar blood pressure but blunted cardiovascular and baroreceptor sensitivity responses compared to workload-matched dynamic resistance exercise. Differences in blood pressure responses between protocols appear small (~5 mmHg) and are affected by the number of sets. The muscle oxidative stimulus is greater during dynamic resistance exercise than workload-matched isometric exercise. [...] Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, GermanyArticle in Thieme eJournals: Table of contents | Abstract | Full text
Source: International Journal of Sports Medicine - August 11, 2021 Category: Sports Medicine Authors: Kounoupis, Anastasios Dipla, Konstantina Tsabalakis, Ioannis Papadopoulos, Stavros Galanis, Nikiforos Boutou, Afroditi K. Vrabas, Ioannis S. Smilios, Ilias Zafeiridis, Andreas Tags: Physiology & Biochemistry Source Type: research
Effects of Aging on Hemodynamic Kinetics in Different Intensities of
Dynamic Exercise
Int J Sports Med DOI: 10.1055/a-1487-6628Healthy aging hemodynamics is known to exhibit a time-dependent loss of function.
We aimed at verifying whether older men would have a slowed cardiac output and
stroke volume dynamics in response to the onset (“on”) and on
recovery (“off”) of exercise in comparison to young men. Twenty
healthy active men (10 young and 10 older) were recruited. Participants
performed an incremental cardiopulmonary exercise testing on a cycle ergometer,
and on another day, 3 constant workload tests in different intensities. Compared
to younger, older men exhi...
Source: International Journal of Sports Medicine - June 22, 2021 Category: Sports Medicine Authors: Borghi-Ricardo, Matheus Sim ões, Rodrigo Polaquini Santos, Daniel Augusto Archiza, Bruno Borghi-Silva, Audrey Tags: Training & Testing Source Type: research
Swimming with Swimsuit and Wetsuit at Typical vs. Cold-water
Temperatures (26 vs. 18 ℃)
This study aimed to compare three swimming conditions in a swimming flume with
water at 26 ℃ (using swimsuit) and 18 ℃
(randomly with swimsuit and wetsuit). Seventeen swimmers (32.4±14.7
years old, 175.6±0.06 cm height, and 70.4±9.8 kg
body mass) performed three bouts until exhaustion at a 400-m front crawl pace
(24 h intervals). ANOVA repeated measures compared the experimental
conditions. Swimming at 26 ℃ with swimsuit evidenced a higher
metabolic demand (total energy expenditure; (E)), comparing to
18 ℃ swimsuit (p=0.05) and with 18 ℃
wetsuit (p=0...
Source: International Journal of Sports Medicine - May 21, 2021 Category: Sports Medicine Authors: Gay, Ana Zacca, Rodrigo Abraldes, J. Arturo Morales-Ort íz, Esther L ópez-Contreras, Gracia Fernandes, Ricardo J. Arellano, Ra úl Tags: Training & Testing Source Type: research
Current Insights in the Age-related Decline in Sports Performance of
the Older Athlete
Int J Sports Med DOI: 10.1055/a-1480-7730The higher performance level of master athletes compared to non-athletes is often
associated with better health throughout life. However, even the physical
performance of master athletes declines with age, and this decline accelerates
from about the age of 70 years onwards. A progressive loss of muscle mass,
declines in force- and power-generating capacity, decreased flexibility, and the
concomitant decline in specific tension characterize the muscular changes
underlying performance declines. In the cardiovascular system, declines in
stroke volume ...
Source: International Journal of Sports Medicine - May 17, 2021 Category: Sports Medicine Authors: Ganse, Bergita Degens, Hans Tags: Review Source Type: research
Propulsive Force of Upper Limbs and its Relationship to Swim Velocity
in the Butterfly Stroke
Int J Sports Med DOI: 10.1055/a-1386-4985The aims of this study were to: (1) verify the sex effect; (2) assess upper
limb asymmetry in anthropometrics and propulsive force variables; and (3)
identify the main determinants of butterfly swim velocity based on a set of
anthropometrics, kinematics, and propulsive force variables. Twenty swimmers
(10 males: 15.40±0.30 years; 10 females: 14.43±0.23 years)
at the national level were recruited for analysis. A set of anthropometrics,
kinematics, and propulsive force variables were measured. Overall, a
significant sex effect was verified (...
Source: International Journal of Sports Medicine - April 16, 2021 Category: Sports Medicine Authors: Morais, Jorge Barbosa, Tiago M. Lopes, Vitor P. Marques, Mario C Marinho, Daniel Almeida Tags: Training & Testing Source Type: research
The Role of Skeletal Muscles in Exertional Heat Stroke Pathophysiology
Int J Sports Med DOI: 10.1055/a-1400-9754The active participation of skeletal muscles is a unique characteristic of exertional heat stroke. Nevertheless, the only well-documented link between skeletal muscle activities and exertional heat stroke pathophysiology is the extensive muscle damage (e. g., rhabdomyolysis) and subsequent leakage of intramuscular content into the circulation of exertional heat stroke victims. Here, we will present and discuss rarely explored roles of skeletal muscles in the context of exertional heat stroke pathophysiology and recovery. This includes an overview of heat production that contribute...
Source: International Journal of Sports Medicine - March 26, 2021 Category: Sports Medicine Authors: Laitano, Orlando Oki, Kentaro Leon, Lisa R. Tags: Review Source Type: research
Electrical Cardiometry and Cardiac Biomarkers in 24-h and 48-h Ultramarathoners
In conclusion, stroke volume and cardiac output showed inconsistent changes between the 2 groups. Average running speed has a significant effect on post-exercise elevation in cardiac biomarkers. [...] Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, GermanyArticle in Thieme eJournals: Table of contents | Abstract | Full text
Source: International Journal of Sports Medicine - March 9, 2021 Category: Sports Medicine Authors: Liu, Che-Hung Li, Li-Hua Chang, Ming-Long Kao, Wei-Fong How, Chorng-Kuang Lai, Jiun-I Lin, Yen-Kuang Chiu, Yu-Hui Chang, Wen-Han Tags: Clinical Sciences Source Type: research
Lifetime Exposure to Recreational Swimming Training and its Effects on Autonomic Responses
Int J Sports Med DOI: 10.1055/a-1224-3842The aim of the present investigation was to assess the effect of long-term recreational swimming training on the cardiac autonomic responses in the healthy population. 70 habitual recreational swimmers (48.6±14.3 yrs.) and 60 sedentary adults (51.5±10.4 yrs.) were recruited. Arterial blood pressure was recorded with participants in supine position for 10 min, and the last 5 min were used to assess heart rate variability, baroreflex sensitivity, and hemodynamic analysis. The analysis of the questionnaire showed that the swimmers had practiced swimming for a mean of 14 years and...
Source: International Journal of Sports Medicine - October 29, 2020 Category: Sports Medicine Authors: Piras, Alessandro Cortesi, Matteo Di Michele, Rocco Trof è, Aurelio Raffi, Milena Tags: Physiology & Biochemistry Source Type: research
Effects of Custom-made Mouthguards on Cardiopulmonary Exercise Capacity
Int J Sports Med DOI: 10.1055/a-1236-3814The importance of using mouthguards as well as their low acceptance rate have been demonstrated. The aim of this study was to investigate the influence of customized mouthguards on hemodynamics.. This randomized crossover study used data from 13 subjects (23.5±1.4 years). The cardiopulmonary and metabolic parameters were observed during ergometer tests without mouthguard (control) in comparison to two types of mouthguards (with and normal without breathing channels). Maximum ventilation was significantly decreased with the normal mouthguard (113.3±30.00 l ∙ min−1) in con...
Source: International Journal of Sports Medicine - October 29, 2020 Category: Sports Medicine Authors: L ässing, Johannes Schulze, Antina Kwast, Stefan Falz, Roberto Vondran, Maximilian Schr öter, Thomas Borger, Michael Busse, Martin Tags: Training & Testing Source Type: research
Rowing Biomechanics, Physiology and Hydrodynamic: A Systematic
Review
Int J Sports Med DOI: 10.1055/a-1231-5268According to numerous studies, rowing performance is influenced by several
factors including rower’s biomechanics, rower’s physiology, the
force generated and stroke style. However, there is a missing gap linking such
factors with rowing performance in the available literature. This paper aims to
investigate the rowing mechanism in terms of rower anthropometry and physiology,
which can impact its biomechanics and performance. The corresponding
hydrodynamic force generated by the oar blade to accelerate the boat is also
considered in the current...
Source: International Journal of Sports Medicine - August 24, 2020 Category: Sports Medicine Authors: Yusof, Ab Aziz Mohd Harun, Muhamad Noor Nasruddin, Fakhrizal Azmi Syahrom, Ardiyansyah Tags: Review Source Type: research
Exercise with End-expiratory Breath Holding Induces Large Increase in
Stroke Volume
This study showed that performing
maximal EEBH during high-intensity exercise led to a large increase in LVSV.
This phenomenon is likely explained by greater left ventricular filling as a
result of an augmented filling time and decreased right ventricular volume
at peak EEBH. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents | Abstract | Full text
Source: International Journal of Sports Medicine - August 24, 2020 Category: Sports Medicine Authors: Woorons, Xavier Lemaitre, Frederic Claessen, Guido Woorons, Clo é Vandewalle, Henri Tags: Training & Testing Source Type: research
