The influence of muscle strength and aerobic fitness on functional recovery in professional soccer

2021 ◽  
Author(s):  
Will ABBOTT ◽  
Tom CLIFFORD
Keyword(s):  
Muscle Strength ◽  
Functional Recovery ◽  
Aerobic Fitness ◽  
Professional Soccer

Impact of COVID-19 Lockdown on Serie A Soccer Players’ Physical Qualities

2021 ◽  
Author(s):  
Ermanno Rampinini ◽  
Federico Donghi ◽  
Marco Martin ◽  
Andrea Bosio ◽  
Marco Riggio ◽  
...  
Keyword(s):  
Aerobic Fitness ◽  
Mixed Models ◽  
Peak Power ◽  
Vertical Jump ◽  
Soccer Players ◽  
Limited Evidence ◽  
Professional Soccer ◽  
Home Based ◽  
Before And After ◽  
Different Seasons

AbstractIn March 2020, the COVID-19 pandemic forced most activities in Italy, including soccer, to cease. During lockdown, players could only train at home, with limited evidence regarding the effect of this period. Therefore, this study aimed to investigate the effect of COVID-19 lockdown on professional soccer players’ physical performance. Aerobic fitness and vertical jump were assessed before and after four periods in two different seasons: COVID-19 lockdown, competitive period before lockdown, competitive period and summer break of the 2016–2017 season. Linear mixed models were used to examine within-period changes and between-period differences in changes observed during COVID-19 lockdown and the three other periods. Within-period changes in aerobic fitness showed a significant improvement following COVID-19 lockdown (p<0.001) and a significant decline during summer break (p<0.001). Between-period differences were significant in the comparison of COVID-19 lockdown with both the competitive 2019–2020 season (p<0.01) and summer break (p<0.001). For the vertical jump, only the between-period comparison revealed significant differences as the changes associated with COVID-19 lockdown were worse than those of the two competitive periods, for both absolute (p<0.05; p<0.001) and relative peak power (p<0.01; p<0.001). Home-based training during lockdown was effective to improve aerobic fitness, although it did not allow players to maintain their competitive period’s power levels.

scholarly journals Ultrasonic evaluation of muscle functional recovery following free functioning gracilis transfer, a preliminary study

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Yi Hou ◽  
Jiantao Yang ◽  
Bengang Qin ◽  
Liqiang Gu ◽  
Jia Zheng
Keyword(s):  
Muscle Strength ◽  
Functional Recovery ◽  
Linear Regression Analysis ◽  
Gracilis Muscle ◽  
Ultrasound Measurement ◽  
Multivariate Linear Regression Analysis ◽  
Joint Mobility ◽  
Post Transplant ◽  
Rest State ◽  
Contraction Ratio

Abstract Background Ultrasonic measurement has not been utilized to assess the functional recovery of transplanted muscle. This study aimed to investigate the feasibility of using B-ultrasound measurement to assess muscle recovery following free functioning gracilis transfer. Methods From January 2009 to January 2014, 35 patients receiving free functioning gracilis transfer to treat total brachial plexus injury were enrolled. B-ultrasound was adopted to determine the cross-sectional area (CSA) of transplanted gracilis muscle at rest and contraction state. The ratio of pre- to post-transplant CSA value at rest state was defined as muscle bulk ratio (MBR). The ratio of CSA value at contraction state to rest state was defined as contraction ratio (CR). Results Patients with muscle strength M ≥ 4 had significantly higher CR1 (post-transplant), CR2 (pre-transplant), and range of motion (ROM, joint mobility) than those with muscle strength M < 4. The CR1 > CR2 group had significantly higher CR1, muscle strength, and ROM than the CR1 ≤ CR2 group. The MBR > 1 group had significantly higher muscle strength than the MBR ≤ 1 group. CR1 value was highly correlated with muscle strength and with ROM. CR2 value was moderately correlated with muscle strength and ROM. Multivariate linear regression analysis showed that a higher CR1/CR2 value was associated with a higher muscle strength and joint mobility. The CR1 > CR2 group had better muscle strength and ROM than the CR1 ≤ CR2 groups. Conclusion B-ultrasound measurement can quantitatively reflect muscle strength following gracilis transfer, and CR value could be a potential indicator for functional recovery of the transplanted gracilis muscle. Level of Evidence: Prognostic studies, Level II.

What Physical Fitness Component Is Most Closely Associated With Adolescents' Blood Pressure?

2017 ◽  
Vol 124 (6) ◽  
pp. 1107-1120 ◽  
Author(s):  
Heloyse E. G. Nunes ◽  
Carlos A. S. Alves ◽  
Eliane C. A. Gonçalves ◽  
Diego A. S. Silva
Keyword(s):  
Blood Pressure ◽  
Body Composition ◽  
Muscle Strength ◽  
Physical Fitness ◽  
Systolic Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Aerobic Fitness ◽  
Pressure Control ◽  
Cross Sectional ◽  
Digital Pressure

This study aimed to determine which of four selected physical fitness variables, would be most associated with blood pressure changes (systolic and diastolic) in a large sample of adolescents. This was a descriptive and cross-sectional, epidemiological study of 1,117 adolescents aged 14–19 years from southern Brazil. Systolic and diastolic blood pressure were measured by a digital pressure device, and the selected physical fitness variables were body composition (body mass index), flexibility (sit-and-reach test), muscle strength/resistance (manual dynamometer), and aerobic fitness (Modified Canadian Aerobic Fitness Test). Simple and multiple linear regression analyses revealed that aerobic fitness and muscle strength/resistance best explained variations in systolic blood pressure for boys (17.3% and 7.4% of variance) and girls (7.4% of variance). Aerobic fitness, body composition, and muscle strength/resistance are all important indicators of blood pressure control, but aerobic fitness was a stronger predictor of systolic blood pressure in boys and of diastolic blood pressure in both sexes.

scholarly journals Muscle Strength and Functional Recovery During the First Year After THA

2013 ◽  
Vol 472 (2) ◽  
pp. 654-664 ◽  
Author(s):  
Dana L. Judd ◽  
Douglas A. Dennis ◽  
Abbey C. Thomas ◽  
Pamela Wolfe ◽  
Michael R. Dayton ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Functional Recovery ◽  
First Year

Whole-Body Aerobic Resistance Training Circuit Improves Aerobic Fitness and Muscle Strength in Sedentary Young Females

2015 ◽  
Vol 29 (6) ◽  
pp. 1592-1600 ◽  
Author(s):  
Terrence R. Myers ◽  
Matthew G. Schneider ◽  
Matthew S. Schmale ◽  
Tom J. Hazell
Keyword(s):  
Resistance Training ◽  
Muscle Strength ◽  
Aerobic Fitness ◽  
Whole Body ◽  
Young Females

scholarly journals Objectively Measured Preoperative Physical Activity is Associated With Time to Functional Recovery after Hepato-Pancreato-Biliary Cancer Surgery: a Pilot Study

2020 ◽  
Author(s):  
Caspar Mylius ◽  
Wim Krijnen ◽  
Tim Takken ◽  
Daan Lips ◽  
Hasan Eker ◽  
...  
Keyword(s):  
Physical Activity ◽  
Pilot Study ◽  
Functional Recovery ◽  
Aerobic Fitness ◽  
Robust Regression ◽  
Vigorous Physical Activity ◽  
Cancer Surgery ◽  
Walk Test ◽  
Multivariate Statistical ◽  
Fitness Level

Abstract Background: Surgical resection is currently the cornerstone of hepato-pancreato-biliary (HPB) cancer treatment. A low preoperative aerobic fitness level has been identified as a modifiable risk factor associated with complications after major abdominal surgery. A person’s aerobic fitness is influenced by performing moderate to vigorous physical activity (MVPA). This study aims to determine the activity monitor measured levels of MVPA performed among patients on the waiting list for HPB cancer surgery and their association with postoperative outcomes. Methods: A prospective, observational multi-center cohort pilot study was conducted. Patients enlisted for resection surgery on suspicion of HPB (pre)malignancy were enrolled. Performed MVPA was measured by an Actigraph wGT3X-BT. Additionally, aerobic fitness was measured via the Incremental Shuttle Walk Test, and (post)operative variables were collected from the electronic patient files. The association between MVPA and the pre and postoperative variables was determined by univariate and multivariate (logistic) robust regression. Results: A total of 38 participants, median age 66.0 (IQR 58.25 – 74.75) years, were enrolled. The meadian daily MVPA was 10.7 (IQR 6.9 – 18.0) minutes, only 8 participants met Dutch MVPA guidelines. Participants age, and incremental shuttle walk test score were associated with MVPA by multivariate statistical analysis. Time to functional recovery was 8 (IQR 5 - 12) days and was associated with MVPA and type of surgery (major/minor) in multivariate analysis. Conclusion: 76% of patients enlisted for resection of HPB (pre)malignancy performed insufficient MVPA. A higher level of MVPA was associated with a shorter time to functional recovery.

scholarly journals Could Self-Control and Emotion Influence Physical Ability and Functional Recovery after Stroke?

Medicina ◽  
2021 ◽  
Vol 57 (10) ◽  
pp. 1042
Author(s):  
Yu-Won Choe ◽  
Myoung-Kwon Kim
Keyword(s):  
Muscle Strength ◽  
Functional Recovery ◽  
Control Level ◽  
The Self ◽  
Self Control ◽  
Static Balance ◽  
Stroke Patients ◽  
Physical Ability ◽  
Physical Variables ◽  
Over Time

Background and Objectives: This study was conducted to determine whether self-control and emotions could influence patients’ physical ability and functional recovery after stroke. Materials and Methods: Twenty-four patients within eight weeks after a stroke were included in this study (age: 54.04 ± 10.31; days after stroke: 42.66 ± 8.84). The subjects participated in tests at the baseline, four weeks later, and eight weeks later. Subjects were asked to complete the following: (1) self-control level test, (2) positive and negative emotion test, (3) knee muscle strength testing, (4) static balance test, (5) gait measurement, and (6) activities of daily living evaluation. Results: The muscle strength of the knee, static balance, gait ability, and the Functional Independence Measure score increased significantly in the stroke patients over time. A significant correlation was noted between the emotion and physical variables in stroke patients. The self-control level was significantly associated with the change in the physical variables in stroke patients over time. Conclusions: The self-control level was positively related to the increases in functional recovery of stroke patients with time, while the emotions were related more to the physical abilities.

scholarly journals Ultrasonic Evaluation of Muscle Recovery Following Free Functioning Gracilis Transfer, A Preliminary Study

2020 ◽  
Author(s):  
Yi Hou ◽  
Jiantao Yang ◽  
Bengang Qin ◽  
Liqiang Gu ◽  
Jia Zheng
Keyword(s):  
Muscle Strength ◽  
Functional Recovery ◽  
Gracilis Muscle ◽  
Ultrasound Measurement ◽  
Multivariate Linear Regression Analysis ◽  
Joint Mobility ◽  
Muscle Recovery ◽  
Post Transplant ◽  
Rest State ◽  
Contraction Ratio

Abstract Background: Ultrasonic measurement has not been utilized to assess functional recovery of transplanted muscle. This study aimed to investigate the feasibility of B-ultrasound measurement for evaluation of muscle recovery following free functioning gracilis transfer.Methods: From January 2009 to January 2014, 35 patients receiving free functioning gracilis transfer due to total brachial plexus injury were enrolled. B-ultrasound was utilized to measure the cross-sectional area (CSA) of transplanted gracilis muscle at rest and contraction state. The ratio of pre- to post-transplant CSA value at rest state was defined as muscle bulk ratio (MBR). The ratio of CSA value at the contraction state to that at rest state was defined as contraction ratio (CR). Results: Patients with muscle strength M≥4 had significantly higher CR1 (post-transplant), CR2 (pre-transplant), and range of motion (ROM, joint mobility) than those with muscle strength M＜4. The CR1>CR2 group had significantly higher CR1, muscle strength, and ROM than the CR1≤CR2 group. The MBR>1 group had significantly higher muscle strength than the MBR≤1 group. CR1 value was highly correlated with muscle strength and with ROM. CR2 value was moderately correlated with muscle strength and ROM. Multivariate linear regression analysis showed that higher CR1/CR2 value was associated with higher muscle strength and higher joint mobility. The CR1>CR2 group had better muscle strength and ROM than the CR1≤CR2 groups.Conclusion: B-ultrasound measurement can quantitatively reflect muscle strength following gracilis transfer, and CR but not MBR value could be a potential indicator for functional recovery of the transplanted gracilis muscle.Level of Evidence: Prognostic studies, Level II.

scholarly journals Determinants of fat mass in prepubertal children

2002 ◽  
Vol 88 (5) ◽  
pp. 545-554 ◽  
Author(s):  
M. J. Müller ◽  
A. Grund ◽  
H. Krause ◽  
M. Siewers ◽  
A. Bosy-Westphal ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Fat Mass ◽  
Aerobic Fitness ◽  
Cross Sectional Study ◽  
Fat Free Mass ◽  
Overweight Children ◽  
Sectional Study ◽  
Normal Children ◽  
Cross Sectional ◽  
Prepubertal Children

The aim of the present study was to compare variables of metabolism, physical activity and fitness to body composition in normal and overweight children in a cross-sectional study design. Body composition was assessed by anthropometric measurements and bioelectrical impedance analysis in forty-eight prepubertal children (age 5–11 years, thirteen normal-weight, thirty-five overweight). Total energy expenditure (EE) was measured by combination of indirect calorimetry (for measurement of resting EE) and individually calibrated 24 h heart-rate (HR) monitoring. Activity-related EE and physical activity level (PAL) were calculated. Time spent with min-by-min HR>FLEX HR was also used as a marker of moderate habitual and vigorous activities. Aerobic fitness (O2 pulse (O2 consumption:HR at submaximal steady-state heart rate), submaximal O2 consumption (VO2submaximal), RER at a HR of 170 beats per min) was determined by bicycle ergometry. Muscle strength of the legs (maximal isometric strength of musculus quadriceps and of musculus ischiocruralis (Fa max and Fb max respectively)) was measured by computer tensiometry. When compared with normal children, overweight children had higher skinfold thicknesses (sum of skinfold thicknesses at four sites +160%), fat mass (+142%), waist (+24%) and hip circumferences (+14%), resting EE (+13%) and RER (+5%). No significant group differences were found for fat-free mass, muscle mass, total EE, activity-related EE, PAL, HR>FLEX HR, VO2submaximal, O2 pulse, Fa max and Fb max as well as the fat-free mass- or muscle mass-adjusted values for resting EE, aerobic fitness and muscle strength. When compared with normal children, overweight children had a lower measured v. estimated resting EE (Δ resting EE) and spent more time watching television. There were positive relationships between fat-free mass(x) and resting EE(x), total EE(y), aerobic fitness(y) and muscle strength(y), but only Δ resting EE(x) and HR>FLEX HR(x) correlated with fat mass(y). In a stepwise multivariate regression analysis resting EE adjusted for fat-free mass and Δ resting EE were significant determinants of % fat mass and explained 29·7% of its variance. Thus, in the present cross-sectional study, resting EE was the most important determinant of fat mass.

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