Acute Consumption of an Energy Drink Does Not Improve Physical Performance of Female Volleyball Players

2015 ◽  
Vol 25 (3) ◽  
pp. 271-277 ◽  
Author(s):  
Catalina Fernández-Campos ◽  
Ana L. Dengo ◽  
José Moncada-Jiménez
Keyword(s):  
Grip Strength ◽  
Physical Performance ◽  
Anaerobic Power ◽  
Energy Drink ◽  
Hand Grip Strength ◽  
Measurement Time ◽  
Double Blind Study ◽  
Hand Grip ◽  
Right Hand ◽  
Volleyball Players

To determine the acute effect of an energy drink (ED) on physical performance of professional female volleyball players. 19 females (age= 22.3 ± 4.9 yr.; height= 171.8 ± 9.4 cm; weight= 65.2 ± 10.1 kg) participated in a randomized, crossover, double-blind study to measure grip strength, vertical jump and anaerobic power in 3 different sessions (ED, placebo [PL] or no beverage [CTL]). For each session, participants arrived in a fasted state, consumed a standardized breakfast meal, and 1 hr later completed the 3 baseline performance tests without having ingested the beverage. After completing the premeasurements, the athletes drank 6 ml/kg of body weight of the ED or PL and in the CTL condition no beverage was consumed. Posttest measurements were taken 30 min after the ingestion of liquids. A 3 × 2 repeated-measures ANOVA revealed no significant within-session and measurement time interactions for each performance test. Regardless of the measurement time, right hand grip strength was significantly higher in the ED condition (34.6 ± 0.9 kg) compared with PL (33.4 ± 1.1 kg) and CTL (33.6 ± 1.0 kg) (p > 0.05). Regardless of the beverage ingested, averaged right hand grip strength, taking into account all 3 testing conditions, increased from pre to posttesting (Pre = 33.8 ± 0.9 kg vs. Post = 33.9 ± 1.0 kg; p = 0.029), as did the averaged fatigue index, obtained from the anaerobic power test (Pre = 65.9± 2.2% vs. Post = 68.7± 2.0%; p= 0.049). The acute ingestion of an ED did not improve physical performance of professional Costa Rican female volleyball players.

CHANGES OF BODY COMPOSITION, MUSCULAR STRENGTH AND PHYSICAL PERFORMANCE DUE TO RESISTANCE TRAINING IN OLDER PERSONS WITH SARCOPENIC OBESITY

2015 ◽  
pp. 1-7
Author(s):  
K. STOEVER ◽  
A. HEBER ◽  
S. EICHBERG ◽  
W. ZIJLSTRA ◽  
K. BRIXIUS
Keyword(s):  
Resistance Training ◽  
Grip Strength ◽  
Physical Performance ◽  
Gait Speed ◽  
Older Persons ◽  
Dynamic Strength ◽  
Hand Grip Strength ◽  
Lower Limbs ◽  
Physical Parameters ◽  
Hand Grip

Background: At present, it is unclear whether older, obese persons with or without sarcopenia respond differently to training. Furthermore, there are no differentiated recommendations for resistance training for this special target group. Objectives: The objectives are to investigate the changes in the physical parameters of older, obese men caused by training and to reappraise the modalities of resistance training for older persons. Design: Pre-test-post-test design. Participants: The participants were 33 physically inactive and obese older men (≥ 65 years, BMI ≥ 30 kg/m2), with-out severe diseases. Subjects were divided into two groups: NSAR (no or presarcopenia, n= 15) or SAR (sarcopenia, n= 18). Intervention: The intervention consisted of progressive resistance training, twice a week for 16 weeks with finally 80-85% of maximum strength and three sets with 8-12 repetitions. The training contained six exercises for the major muscle groups. Measurements: Sarcopenia was assessed using the Short Physical Performance Battery (SPPB), hand-grip strength, skeletal muscle mass index (SMI), and gait speed over a 6-meter walkway. Furthermore, the maximum dynamic strength (1 RM) was assessed. Results: At baseline, the NSAR group had significantly better values in SMI, SPPB score, hand-grip strength, and 1 RM. After training, the results in both groups displayed an increase in 1 RM at the lower limbs (NSAR 18%, SAR 38%) and the upper limbs (NSAR 12%, SAR 14%). Also, the SPPB score (NSAR 11%, SAR 15%) and the 6-m-gait speed (NSAR 5%, SAR 10%) increased. The SAR group was able to increase their right hand-grip strength by 12%, whereas the NSAR group maintained their initial high strength values. SMI did not change in both groups. Conclusions: Both groups show improvements after resistance training with slightly more benefits for men with sarcopenia. Results of this study can be used to define specific training regimens for N(SAR) subjects.

scholarly journals Strength and Reaction Time Capabilities of New Zealand Polo Players and Their Association with Polo Playing Handicap

2019 ◽  
Vol 4 (3) ◽  
pp. 48 ◽  
Author(s):  
Regan Standing ◽  
Russ Best
Keyword(s):  
New Zealand ◽  
Reaction Time ◽  
Grip Strength ◽  
Statistical Significance ◽  
Correlation Coefficients ◽  
Hand Grip Strength ◽  
Left Hand ◽  
Hand Grip ◽  
Right Hand ◽  
Physical Attributes

Polo is an equestrian team sport consisting of four players per team, with level of play determined by cumulative player handicap (−2 to +10 goals), with a higher handicap denoting a better player. There is minimal literature investigating Polo players’ physical attributes, hence the understanding of the physical characteristics that may contribute to an improved handicap are unknown. This study sought to identify the relationship between pertinent strength measures (left and right hand grip strength; absolute and relative isometric mid-thigh pull) and reaction time in Polo handicap in 19 New Zealand Polo players, and ascertain whether handicap could be predicted by these measures. Correlation coefficients were expressed using R values, accompanying descriptors and 90% confidence intervals (C.I.). Variance explained was expressed via the R2 statistic, and statistical significance set at p < 0.05. Right hand grip strength, isometric mid-thigh pull values were found to significantly correlate to and explain variance within Polo player handicap (all moderate to large correlations; p < 0.05). Whereas left hand grip strength (R: 0.380; 90% C.I. −0.011 to 0.670) and reaction time (0.020; −0.372 to 0.406) were non-significant, moderate and trivial correlates and predictors of handicap respectively. Practically, these findings highlight the differing roles between rein and mallet hands of Polo players and emphasise the importance of a strong and stable platform when riding and striking the ball. Lack of association with reaction time may be explained in part by higher handicapped Polo players employing a more proactive approach to the game.

scholarly journals The Influence of Upper and Lower Extremity Strength on Performance-Based Sarcopenia Assessment Tests

2018 ◽  
Vol 3 (4) ◽  
pp. 53 ◽  
Author(s):  
Michael Harris-Love ◽  
Kimberly Benson ◽  
Erin Leasure ◽  
Bernadette Adams ◽  
Valerie McIntosh
Keyword(s):  
Lower Extremity ◽  
Grip Strength ◽  
Physical Performance ◽  
Gait Speed ◽  
Grip Force ◽  
Knee Extensor ◽  
Hand Grip Strength ◽  
Strength Testing ◽  
Hand Grip ◽  
Lower Extremity Strength

The optimal management of sarcopenia requires appropriate endpoint measures to determine intervention efficacy. While hand grip strength is a predictor of morbidity and mortality, lower extremity strength may be better associated with functional activities in comparison to hand grip strength. The purpose of our study was to examine the comparative association of upper and lower extremity strength with common measures of physical performance in older adults. Thirty community-dwelling men, aged 62.5 ± 9.2 years, completed body composition analysis, quantitative strength testing, and performance-based tests of functional status. Hand grip force values were not significantly associated with knee extensor or flexor torque values (p > 0.05). Hand grip force was only associated with fast gait speed, while knee extensor torque at 60°/s was the only variable significantly associated across all functional outcome measures: customary gait speed, fast gait speed, sit to stand time, and the Physical Performance Test (p < 0.02). Hand grip strength was not a proxy measure of lower extremity strength as assessed in this study. Overall, lower extremity muscle strength values had the strongest associations with participant functional performance. Lower extremity strength testing may provide additional value as an endpoint measure in the assessment and clinical management of sarcopenia.

scholarly journals Nutrition and physical performance in older people—effects of marine protein hydrolysates to prevent decline in physical performance: a randomised controlled trial protocol

BMJ Open ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. e023845 ◽  
Author(s):  
Linda Anette Kornstad Nygård ◽  
Ingunn Mundal ◽  
Lisbeth Dahl ◽  
Jūratė Šaltytė Benth ◽  
Anne Marie Mork Rokstad
Keyword(s):  
Quality Of Life ◽  
Grip Strength ◽  
Physical Performance ◽  
Controlled Trial ◽  
Hand Grip Strength ◽  
Control Group ◽  
Supplement Use ◽  
Hand Grip ◽  
Marine Protein

IntroductionAge-related loss of muscle mass, muscle strength and muscle function (sarcopenia) leads to a decline in physical performance, loss of independence and reduced quality of life. Nutritional supplements may delay the progression of sarcopenia. The aim of this randomised, double-blinded controlled trial including 100 participants (≥65 years) is to assess the effect of a marine protein hydrolysate (MPH) on sarcopenia-related outcomes like hand grip strength, physical performance or gait speed and to study the associations between physical performance and nutritional intake and status.Method and analysisThe intervention group (n=50) will receive 3 g of MPH per day in 12 months. The control group (n=50) receive placebo. Assessments of Short Physical Performance Battery (SPPB), hand grip strength, anthropometric measurements, nutritional status as measured by the Mini Nutritional Assessment, dietary intake, supplement use, biomarkers of protein nutrition and vitamin D, and health-related quality of life (EQ-5D), will be performed at baseline and after 6 and 12 months of intervention. Linear mixed models will be estimated to assess the effect of MPH on SPPB, hand grip strength and quality of life, as well as associations between physical performance and nutrition.Ethics and disseminationThe study has been approved by the Regional Committee in Ethics in Medical Research in Mid-Norway in September 2016 with the registration ID 2016/1152. The results will be actively disseminated through peer-reviewed journals, conference presentations, social media, broadcast media and print media.Trial registration numberNCT02890290.

scholarly journals Association of Plasma Carotenoid and Malondialdehyde Levels with Physical Performance in Korean Adolescents

2021 ◽  
Author(s):  
Heeyeon Joo ◽  
Jiyoung Hwang ◽  
Jiyeon Kim ◽  
Hyesook Kim ◽  
Oran Kwon
Keyword(s):  
Grip Strength ◽  
Physical Performance ◽  
Maximal Oxygen Consumption ◽  
Multiple Linear Regression Model ◽  
Cross Sectional Study ◽  
Hand Grip Strength ◽  
Photodiode Array Detection ◽  
Cross Sectional ◽  
Korean Adolescents ◽  
Hand Grip

Abstract Background Increased oxidative stress has been shown to lead to muscle damage and reduced physical performance. The antioxidant mechanism is most likely to reduce these relationships, but in the context of the action of carotenoids, more research is needed. This cross-sectional study aims to investigate whether carotenoids modify the association between plasma malondialdehyde (MDA) and physical performance in Korean adolescents. Methods The study sample consisted of 381 participants (164 boys, 217 girls) aged 13−18, who participated in the 2018 National Fitness Award Project. We quantified α-carotene, β-carotene, β-cryptoxanthin, lutein, zeaxanthin, lycopene, and MDA levels in plasma using HPLC with photodiode array detection. Physical performance was measured by determining the absolute and relative hand grip strength, 20-m progressive aerobic cardiovascular endurance run, estimated maximal oxygen consumption, curl-up, and sit-and-reach. Results In boys, the multiple linear regression model adjusted for age, BMI, smoking, drinking, and physical activity showed that the MDA level was negatively associated with absolute hand grip strength; this association was observed only in groups with α-carotene, β-cryptoxanthin, zeaxanthin, and total carotenoid values below the median. Conclusion These results suggest that carotenoids may act as an effect modifier of the association between MDA and physical performance in Korean male adolescents.

Is Hand Grip Strength A Valuable Tool In Order To Assess Physical Performance In Athletes?

2009 ◽  
Vol 41 ◽  
pp. 32
Author(s):  
Ulla M. Svantesson ◽  
Frode Slinde ◽  
Cecilia Elam Edwén ◽  
Lena Hulthén
Keyword(s):  
Grip Strength ◽  
Physical Performance ◽  
Hand Grip Strength ◽  
Hand Grip

FURTHER EVIDENCE OF AN ASSOCIATION BETWEEN LOW SECOND-TO-FOURTH DIGIT RATIO (2D:4D) AND SELECTION FOR THE UNIFORMED SERVICES: A STUDY AMONG POLICE PERSONNEL IN WROCŁAW, POLAND

2017 ◽  
Vol 50 (4) ◽  
pp. 527-539 ◽  
Author(s):  
Sławomir Kozieł ◽  
Marek Kociuba ◽  
Raja Chakraborty ◽  
Aneta Sitek ◽  
Zofia Ignasiak
Keyword(s):  
Grip Strength ◽  
Police Officers ◽  
Hand Grip Strength ◽  
Digit Ratio ◽  
Control Group ◽  
Mean Values ◽  
Hand Grip ◽  
Right Hand ◽  
Female Police Officers ◽  
The Right

SummaryMales and females differ in their preference for occupations and sporting activities, and differ also in risk-taking attitudes. In addition to other explanations, prenatal hormone exposure has been implicated in these gender-associated differences. The ratio of the relative lengths of the second-to-fourth digits (2D:4D) is a proxy indicator of prenatal exposure to testosterone relative to oestrogen. The 2D:4D ratio has been found to be associated with choice of occupation, particularly among females. This study investigated whether 2D:4D differed between police officers and a control group of civilians in Wrocław, Poland. Participants were 147 male and 55 female police officers and 91 male and 75 female civilian controls. The police officers had to undergo rigorous physical ability tests during recruitment and their job bore relatively higher risk, whereas the controls had a normal civilian lifestyle. Height, weight, hand grip strength and lengths of the second and fourth digits were measured. Analyses of variance and covariance were employed to assess the significance of difference in digit ratio between groups (police officers and civilians) allowing for interaction with sex. The policewomen, compared with the female controls, were taller and had stronger hand grip strength, but had lower 2D:4D in the right hand and average 2D:4D of both hands. However, male and female police officers slightly differed only in the right hand digit ratio but not in the left hand ratio or the average for the two hands. However, the control group showed significant sex differences in all digit ratios with higher (feminine) mean values in females. The study provides further evidence that prenatal testosterone exposure, as reflected in the 2D:4D ratio, might have an association with choice of occupation, particularly among females.

scholarly journals A Comparison of Some Parameters of Football Players According to the Leagues They Play In

2018 ◽  
Vol 6 (11) ◽  
pp. 135
Author(s):  
Tahir Kilic ◽  
Mehmet Ali Anil Tosur
Keyword(s):  
Grip Strength ◽  
Vertical Jump ◽  
Anaerobic Power ◽  
Football Player ◽  
Hand Grip Strength ◽  
Football Players ◽  
Left Hand ◽  
Leg Strength ◽  
Hand Grip ◽  
Shuttle Run

The purpose of this study was to compare some parameters of football players playing in 3rd League, BAL (Regional Amateur League) and SAL (Super Amateur League) according to the leagues they play in.Body height, body weight, body mass index, age, age of becoming a registered football player, vertical jump, anaerobic power, shuttle run, aerobic capacity (MaxVO2), leg strength, back strength, right-hand grip strength and left-hand grip strength parameters were measured in this study. ANOVA test, which is one of the parametric tests, were applied for the analysis of the data and significance level of p˂0.05 was sought.In conclusion, significant differences among the leagues were found according to height, vertical jump, anaerobic power, shuttle run, aerobic capacity, leg strength and back strength. However, no significant differences were found on body mass index, age, and age of becoming a registered football player, right-hand grip strength and left-hand grip strength parameters.

scholarly journals The correlation between right hand finger ratio (2D:4D) and the parameters of anthropometric and physical fitness in children

2018 ◽  
Vol 15 (1) ◽  
pp. 656
Author(s):  
Nebahat Eler
Keyword(s):  
Physical Fitness ◽  
Grip Strength ◽  
Body Fat ◽  
Negative Correlation ◽  
Hand Grip Strength ◽  
Hand Grip ◽  
Right Hand ◽  
Standing Long Jump ◽  
Vertical Jumping ◽  
Long Jump

It is hypothesized that there is a correlation between the ratio of second hand finger to fourth hand finger (2D:4D) which is an indicator of prenatal testosterone and physical fitness and sportive performance The aim of this study was to determined correlation between the right hand finger ratio (2D:4D) and the parameters of anthropometric and physical fitness in male and female children aged between 10 and 12. Six hundred and seventy eight males whose age average was 0.49±1.32 and 592 females whose age average was 10.38 ± 1.48 participated in this study. In addition to taking the students’ right hand 2D:4D, height, weight, triceps, subscapular, full arm and leg measurements, vertical jumping, standing long jump, flexibility, 20 m sprint, 10x5 agility, leg strength, right/left hand grip strength, 20 m shuttle run and balance tests were also performed. Statistically differences were found between anthropometric measurements apart from height and BMI, 2D:4D and physical fitness parameters in the males and females. A negative correlation between right hand 2D:4D and vertical jumping, standing long jump, 20 m sprint, 10x5 agility and right hand grip strength in the males. As for the females, although a negative correlation was detected between right hand 2D:4D and height, a positive correlation was found between the same variable and body fat ratio (p<0.05). It can be concluded that while a low 2D:4D ratio was correlated with static and explosive strength, speed and agility in the males, it was correlated with height and body fat ratio in the females.

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