Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 853
Filtrar
1.
Nutrients ; 15(21)2023 Oct 24.
Artigo em Inglês | MEDLINE | ID: mdl-37960153

RESUMO

A drinking strategy aiming to replace a given percentage of the sweat losses incurred during exercise should result in reproducible fluid intake volume and, hence, fluid balance from one exercise session to the other performed under similar scenarios. Whether this may also be the case with ad libitum drinking during exercise is unclear. We characterized the repeatability of ad libitum water intake during repeated 1 h exercise sessions and examined its effect over time on fluid balance and selected physiological functions and perceptual sensations. Twelve (3 women) healthy individuals participated in this study. At weekly intervals, they completed four 2 × 30 min walking/jogging exercise bouts (55% V˙O2max, 40 °C, 20-30% relative humidity) interspersed by a 3 min recovery period. During exercise, participants consumed water (20 °C) ad libitum. There were no significant differences among the four exercise sessions for absolute water intake volume (~1000 mL·h-1), percent body mass loss (~0.4%), sweat rate (~1300 mL·h-1) and percent of sweat loss replaced by water intake (~80%). Heart rate, rectal temperature, and perceived thirst and heat stress did not differ significantly between the first and fourth exercise sessions. Perceived exertion was significantly lower during the fourth vs. the first exercise session, but the difference was trivial (<1 arbitrary unit). In conclusion, ad libitum water intake during four successive identical 1 h walking/jogging sessions conducted in the heat will result in similar water intake volumes and perturbations in fluid balance, heart rate, rectal temperature, and perceived thirst, heat stress and exertion.


Assuntos
Desidratação , Ingestão de Líquidos , Feminino , Humanos , Ingestão de Líquidos/fisiologia , Temperatura Alta , Corrida Moderada , Concentração Osmolar , Caminhada/fisiologia , Equilíbrio Hidroeletrolítico/fisiologia , Masculino
2.
Sensors (Basel) ; 23(21)2023 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-37960669

RESUMO

All new physical behaviour measurement devices should be assessed for compatibility with previous devices. Agreement was assessed between the activPAL4TM and activPAL3TM physical behavior monitors within a laboratory and a multi-day free-living context. Healthy children aged 6-12 years performed standardised (sitting, standing, stepping) (12 min) and non-standardised (6 min) activities in a laboratory and a multi-day (median 3 days) free-living assessment whilst wearing both monitors. Agreement was assessed using Bland-Altman plots, sensitivity, and the positive predictive value (PPV). There were 15 children (7M/8F, 8.4 ± 1.8 years old) recruited. For the laboratory-based standardised activities, sitting time, stepping time, and fast walking/jogging step count were all within ±5% agreement. However, the activPAL4TM standing time was lower (-6.4%) and normal speed walking step count higher (+7.8%) than those of the activPAL3TM. For non-standardised activities, a higher step count was recorded by the activPAL4TM (+4.9%). The standardised activity sensitivity and PPV were all >90%, but the non-standardised activity values were lower. For free-living agreement, the standing time was lower (-7.6%) and step count higher (all steps + 2.2%, steps with cadence >100 step/min + 6.6%) for the activPAL4TM than the activPAL3TM. This study highlights differences in outcomes as determined by the activPAL4TM and activPAL3TM, which should be considered when comparing outcomes between studies.


Assuntos
Postura , Caminhada , Humanos , Criança , Corrida Moderada , Valor Preditivo dos Testes , Posição Ortostática
3.
BMC Musculoskelet Disord ; 24(1): 919, 2023 Nov 28.
Artigo em Inglês | MEDLINE | ID: mdl-38017430

RESUMO

BACKGROUND: Patients with anterior cruciate ligament (ACL) deficiency (ACLD) tend to have altered lower extremity dynamics. Little is known about the changes in dynamic function and activation during jogging in patients with ACLD. METHODS: Twenty patients with an injured ACL before ACL reconstruction (ACLD group) and nine healthy male volunteers (control group) were recruited. Each volunteer repeated the jogging experiment five times. Based on the experimental data measured, a musculoskeletal multibody dynamics model was employed to simulate the tibiofemoral joint dynamics during jogging. Eighteen muscles were used for analysis. The obtained dynamics data were used for clustering and curve difference analysis. RESULTS: The 18 muscles studied were divided into 3 categories. All the quadriceps, the soleus, the gastrocnemius, and the popliteus were classified as label 1. All the hamstrings were classified as label 2, and the sartorius muscles were classified as label 3. Among them, the classification of the short head of the biceps femoris was significantly different between the two groups (P < 0.001). The force curves of all 18 muscles and the between-group differences were studied according to clustered categories. Most muscle force in label 1 was approaching zero in the terminal stance phase, which was significantly lower than that in the control group (P < 0.05). The muscle force in label 2 had areas with significant differences in the stance phase. Muscle force in label 3 was significantly lower than that in the control group in the pre-swing phase. CONCLUSIONS: This study showed that there are various changes of muscle function and activation in patients with ACLD. Through clustering and curve analysis, the joint reactions and changes of different muscle forces in the gait cycle between the ACLD and control groups could be further clarified.


Assuntos
Lesões do Ligamento Cruzado Anterior , Ligamento Cruzado Anterior , Humanos , Masculino , Ligamento Cruzado Anterior/cirurgia , Corrida Moderada , Lesões do Ligamento Cruzado Anterior/complicações , Lesões do Ligamento Cruzado Anterior/cirurgia , Articulação do Joelho , Marcha/fisiologia , Músculo Esquelético/fisiologia , Fenômenos Biomecânicos/fisiologia
4.
Artigo em Inglês | MEDLINE | ID: mdl-37835142

RESUMO

Telomere length is a good index of cellular aging. Longer telomeres are predictive of longer life, and healthy lifestyles are associated with longer telomeres. This study explored the relationship between time spent jogging or running each week and leukocyte telomere length (LTL) in 4458 randomly selected U.S. adults. The association was studied using data collected by the National Health and Nutrition Examination Survey (NHANES), and a cross-sectional design. Total weekly jog/run time was calculated from survey responses. From the minute totals, three categories were formed: <10 min/week, 10-74 min/week, and ≥75 min/week. Adults in the third category met the U.S. guidelines. Data were analyzed using one-way ANOVA. Partial correlation was used to adjust for differences in potential mediating factors, including demographic and lifestyle/medical factors. In the total sample, after adjusting for all the potential covariates, mean LTL significantly differed across the three jog/run categories (F = 4.1, p = 0.0272). Specifically, adults who met the guidelines via jogging and/or running had significantly longer telomeres than adults who performed no jogging/running. Adults in the middle category did not differ from the other two categories. A minimum of 75 min of jogging/running weekly is predictive of longer telomeres when compared to adults who do not jog or run regularly.


Assuntos
Corrida Moderada , Corrida , Estudos Transversais , Leucócitos/fisiologia , Inquéritos Nutricionais , Humanos , Adulto
5.
Gait Posture ; 104: 90-96, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37348185

RESUMO

BACKGROUND: The development of plantar pressure insoles has made them a potential replacement for force plates. These wearable devices can measure multiple steps and might be used outside of the lab environment for rehabilitation and evaluation of sport performance. However, they can only measure the vertical force which does not completely represent the vertical ground reaction force. In addition, they are not able to measure shear forces which play an import role in the dynamic performance of individuals. Indirect approaches might be implemented to improve the accuracy of the force estimated by plantar pressure systems. RESEARCH QUESTION: The aim of this study was to predict the vertical and shear components of ground reaction force from plantar pressure data using recurrent neural networks. METHODS: Ground reaction force and plantar pressure data were collected from 16 healthy individuals during 10 trials of walking and five trials of jogging using Bertec force plates at 1000 Hz and FScan plantar pressure insoles at 100 Hz. A long short-term memory neural network was built to consider the time dependency of pressure and force data in predictions. The data were split into three subsets of train, to train the model, evaluate, to optimize the model hyperparameters, and test sets, to assess the accuracy of the model predictions. RESULTS: The results of this study showed that our long short-term memory model could accurately predict the shear and vertical force components during walking and jogging. The predictions were more accurate during walking compared to jogging. In addition, the predictions of mediolateral force had higher error and lower correlation compared to vertical and anteroposterior components. SIGNIFICANCE: The long short-term memory model developed in this study may be an acceptable option for accurate estimation of ground reaction force during outdoor activities which can have significant impacts in rehabilitation, sport performance, and gaming.


Assuntos
Corrida Moderada , Dispositivos Eletrônicos Vestíveis , Humanos , Pressão , Fenômenos Biomecânicos , Caminhada , Sapatos , Marcha
6.
Sensors (Basel) ; 23(9)2023 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-37177759

RESUMO

A link between inappropriate physical behaviour patterns (low physical activity and high sedentary behaviour) and poor health outcomes has been observed. To provide evidence to quantify this link, it is important to have valid and reliable assessment tools. This study aimed to assess the validity and reliability of the activPAL4TM monitor for distinguishing postures and measuring stepping activity of 6-12-year-old children. Thirteen children (8.5 ± 1.8 years) engaged in pre-determined standardised (12 min) and non-standardised (6 min) activities. Agreement, specificity and positive predictive value were assessed between the activPAL4TM and direct observation (DO) (nearest 0.1 s). Between-activPAL4TM (inter-device) and between-observer (inter-rater) reliability were determined. Detection of sitting and stepping time and forward purposeful step count were all within 5% of DO. Standing time was slightly overestimated (+10%) and fast walking/jogging steps underestimated (-20%). For non-standardised activities, activPAL4TM step count matched most closely to combined backward and forward purposeful steps; however, agreement varied widely. The activPAL4TM demonstrated high levels of reliability (ICC(1, 1) > 0.976), which were higher in some instances than could be achieved through direct observation (ICC(2, 1) > 0.851 for non-standardised activities). Overall, the activPAL4TM recorded standardised activities well. However, further work is required to establish the exact nature of steps counted by the activPAL4TM.


Assuntos
Exercício Físico , Postura , Humanos , Criança , Reprodutibilidade dos Testes , Caminhada , Corrida Moderada
7.
J Diabetes Res ; 2023: 4454396, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37082380

RESUMO

Background: Diabetes mellitus has reached global epidemic proportions, with type 2 diabetes (T2DM) comprising more than 90% of all subjects with diabetes. Cardiovascular autonomic neuropathy (CAN) frequently occurs in T2DM. Heart rate variability (HRV) reflects a neural balance between the sympathetic and parasympathetic autonomic nervous systems (ANS) and a marker of CAN. Reduced HRV has been shown in T2DM and improved by physical activity and exercise. External addition of pulses to the circulation, as accomplished by a passive simulated jogging device (JD), restores HRV in nondiseased sedentary subjects after a single session. We hypothesized that application of JD for a longer period (7 days) might improve HRV in T2DM participants. Methods: We performed a nonrandomized study on ten T2DM subjects (age range 44-73 yrs) who were recruited and asked to use a physical activity intervention, a passive simulated jogging device (JD) for 7 days. JD moves the feet in a repetitive and alternating manner; the upward movement of the pedal is followed by a downward movement of the forefoot tapping against a semirigid bumper to simulate the tapping of feet against the ground during jogging. Heart rate variability (HRV) analysis was performed using an electrocardiogram in each subject in seated posture on day 1 (baseline, BL), after seven days of JD (JD7), and seven days after discontinuation of JD (Post-JD). Time domain variables were computed, viz., standard deviation of all normal RR intervals (SDNN), standard deviation of the delta of all RR intervals (SDΔNN), and the square root of the mean of the sum of the squares of differences between adjacent RR intervals (RMSSD). Frequency domain measures were determined using a standard Fast Fourier spectral analysis, as well as the parameters of the Poincaré plots (SD1 and SD2). Results: Seven days of JD significantly increased SDNN, SDΔNN, RMSSD, and both SD1 and SD2 from baseline values. The latter parameters remained increased Post-JD. JD did not modify the frequency domain measures of HRV. Conclusion: A passive simulated jogging device increased the time domain and Poincaré variables of HRV in T2DM. This intervention provided effortless physical activity as a novel method to harness the beneficial effects of passive physical activity for improving HRV in T2DM subjects.


Assuntos
Diabetes Mellitus Tipo 2 , Humanos , Lactente , Frequência Cardíaca/fisiologia , Diabetes Mellitus Tipo 2/epidemiologia , Corrida Moderada , Sistema Nervoso Autônomo
8.
J Strength Cond Res ; 37(7): 1411-1418, 2023 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-36727920

RESUMO

ABSTRACT: Freeman, BW, Talpey, SW, James, LP, Opar, DA, and Young, WB. Common high-speed running thresholds likely do not correspond to high-speed running in field sports. J Strength Cond Res 37(7): 1411-1418, 2023-The purpose of this study was to clarify what percentage of maximum speed is associated with various running gaits. Fifteen amateur field sport athletes (age = 23 ± 3.6 years) participated in a series of 55-meter running trials. The speed of each trial was determined by instructions relating to 5 previously identified gait patterns (jog, run, stride, near maximum sprint, and sprint). Each trial was filmed in slow motion (240 fps), whereas running speed was obtained using Global Positioning Systems. Contact time, stride angle, and midstance free-leg knee angle were determined from video footage. Running gaits corresponded with the following running speeds, jogging = 4.51 m·s -1 , 56%Vmax, running = 5.41 m·s -1 , 66%Vmax , striding = 6.37 m·s -1 , 78%Vmax, near maximum sprinting = 7.08 m·s -1 , 87%Vmax, and sprinting = 8.15 m·s -1 , 100%Vmax. Significant ( p < 0.05) increases in stride angle were observed as running speed increased. Significant ( p < 0.05) decreases were observed in contact time and midstance free-leg knee angle as running speed increased. These findings suggest currently used thresholds for high-speed running (HSR) and sprinting most likely correspond with jogging and striding, which likely underestimates the true HSR demands. Therefore, a higher relative speed could be used to describe HSR and sprinting more accurately in field sports.


Assuntos
Desempenho Atlético , Corrida , Humanos , Adulto Jovem , Adulto , Atletas , Corrida Moderada , Marcha , Articulação do Joelho
9.
J Med Ultrason (2001) ; 50(2): 229-236, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36800121

RESUMO

PURPOSE: The cumulative knee adduction moment (KAM) is a key parameter evaluated for the prevention of overload knee injuries on the medial compartment. Medial meniscus extrusion (MME), typical in hoop dysfunctions, is a measure for the cumulative mechanical stress in individual knees; however, its correlation with cumulative KAM is unknown. The aim of this study was to investigate the effect of temporary overload stress on MME and its correlation with cumulative KAM. METHODS: Thirteen healthy asymptomatic volunteers (13 knees) were recruited for a cohort study (mean age, 23.1 ± 3.3 years; males: n = 8). The cumulative KAM was calculated using a three-dimensional motion analysis system, in addition to the number of steps taken while jogging uphill or downhill. MME was evaluated using ultrasound performed in the standing position. The evaluations were performed four times: at baseline (T0), before and after (T1 and T2, respectively) jogging uphill or downhill, and 1 day after (T3) jogging. Additionally, the Δ-value was calculated using the change of meniscus after efforts as the difference in MME between T1 and T2. RESULTS: The MME in T2 was significantly greater than those in T0 and T1. Conversely, the MME in T3 was significantly lesser than that in T2. No significant difference was found between those in T0 and T1, and T3. ΔMME exhibited a significant positive correlation with the cumulative KAM (r = 0.68, p = 0.01), but not for peak KAM. CONCLUSION: The temporary reaction of MME observed in ultrasound correlates with the cumulative stress of KAM.


Assuntos
Meniscos Tibiais , Osteoartrite do Joelho , Masculino , Humanos , Adulto Jovem , Adulto , Meniscos Tibiais/diagnóstico por imagem , Corrida Moderada , Estudos de Coortes , Voluntários Saudáveis
10.
Int J Gynaecol Obstet ; 162(2): 765-770, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-36825336

RESUMO

OBJECTIVE: Exercise during pregnancy has been proven to reduce the risk of cesarean delivery. However, few studies have examined the relationship between walking or jogging during pregnancy and the success rate of vaginal birth after cesarean delivery (VBAC). This multicenter, retrospective cohort study aimed to determine the association between walking or jogging during pregnancy and the success rate of VBAC in women who underwent a trial of labor after cesarean delivery. METHODS: The study was conducted between January 2018 and December 2019 in Foshan, China. Univariate and multivariable analyses were performed on demographic and obstetric data collected from the electronic record system. RESULTS: Of 1080 women included in the final analysis, 80.4% underwent VBAC. In the multivariable analysis, women who walked or jogged ≥200 min/week during pregnancy had a higher likelihood of successful VBAC than women who did not exercise, after adjusting for two sets of confounders: Model 1: Adjusted odds ratio (OR), 1.74 (95% confidence interval [CI], 1.06-2.85) and model 2: Adjusted OR, 1.83 (95% CI, 1.09-3.06). CONCLUSIONS: Walking or jogging ≥200 min/week during pregnancy significantly reduces the risk of cesarean delivery among women who undergo a trial of labor after cesarean delivery.


Assuntos
Nascimento Vaginal Após Cesárea , Gravidez , Feminino , Humanos , Estudos Retrospectivos , Prova de Trabalho de Parto , Corrida Moderada , Caminhada
11.
Eur J Sport Sci ; 23(8): 1560-1569, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35894681

RESUMO

This study investigated whether walking with blood flow restriction (BFR) increases acute cardio-respiratory demands to the point that it can be considered an alternative for jogging. Sixteen physically active adults completed five experimental sessions (order randomised), comprising 10 min of treadmill exercise. Two sessions included unrestricted walking, two sessions required walking with BFR cuffs positioned on the lower limbs inflated to 60% of individualised arterial occlusion pressure, and one session was conducted at a jogging pace. Comfortable walking and jogging speeds were calculated during the familiarisation session. Walking speeds were individualised to either 100% (speed: 6.0 ± 0.3km·h-1[low-intensity]) or 120% (speed: 7.2 ± 0.3km·h-1[moderate-intensity]) of comfortable walking speed. The jogging session was unrestricted (speed: 9.1 ± 0.7km·h-1). Initial analysis compared walking conditions across heart rate, left cardiac work index, systolic blood pressure, relative oxygen consumption, minute ventilation, rating of perceived exertion and limb discomfort. Secondary analysis compared the walking session with the highest cardio-respiratory demands to jogging. Initial analysis identified that moderate-intensity with BFR induced the highest cardio-respiratory and perceptual responses compared with any other walking sessions (p < 0.01). Secondary analysis revealed that all cardio-respiratory measures were higher during jogging when compared with moderate-intensity with BFR (p < 0.01), except systolic blood pressure (p = 0.10). All perceptual measures were higher during moderate-intensity with BFR (p < 0.01) compared with jogging. Low- to moderate-intensity BFR-walking produces lower acute cardio-respiratory responses at higher ratings of perceived exertion and discomfort compared with jogging. Overall, BFR-walking does not seem to provide an equivalent exercise modality for unrestricted jogging in physically active adults.HighlightsIn young active adults, walking with blood flow restriction increases cardio-respiratory demands, yet not to a level equivalent to jogging.Moderate-intensity blood flow restricted walking elicits higher exercise-related sensation of exertion and leg discomfort than jogging.Blood flow restriction application increases exercise severity whereby moderate-intensity BFR-walking and jogging are both considered vigorous-intensity exercise.


Assuntos
Hemodinâmica , Corrida Moderada , Adulto , Humanos , Fluxo Sanguíneo Regional/fisiologia , Hemodinâmica/fisiologia , Caminhada/fisiologia , Exercício Físico/fisiologia
12.
Brain Behav ; 13(1): e2820, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36454123

RESUMO

BACKGROUND: Migraine is a multifactorial headache disorder. Maladaptive functional networks or altered circuit-related connectivity in the brain with migraine appear to perturb the effects of usual treatments. OBJECTIVES: In the present preliminary trial, we aim to study the effectiveness of performing pieces of body-mind, cognitive, or network reconstruction-based training (i.e., eye movement exercise plus jogging; EME+J and diaphragmatic breathing plus jogging; DB+J) in decreasing migraine symptoms. METHODS: We used a three-arm, triple-blind, non-inferiority randomized comparison design with pre-test, post-test, and follow-up measurements to assess the effectiveness of EME+J and DB+J in the brain with migraine. Participants were randomly assigned to one of the study groups to perform either 12 consecutive weeks of EME+J (n = 22), DB+J (n = 19), or receiving, treatment as usual, TAU (n = 22). RESULTS: The primary outcome statistical analysis through a linear mixed model showed a significant decrease in the frequency (p = .0001), duration (p = .003), and intensity (p = .007) of migraine attacks among the interventions and measurement times. The pairwise comparisons of simple effects showed that EME+J and DB+J effectively reduced migraine symptoms at the post-test and follow-up (p < .05). Cochran's tests showed that interventions decreased the number of menses-related migraine attacks. EME+J and DB+J effectively decreased over-the-counter (OTC) drug use, refreshed wake-up mode, and improved sleep and water drinking patterns. These are the secondary outcomes that Cochran's tests showed in the interventional groups after the interventions and at 12 months of follow-up. CONCLUSION: EME+J or DB+J can be an effective and safe method with no adverse effects to decrease the symptoms of migraine attacks. Moreover, a reduction in the frequency of menstrual cycle-related attacks, OTC drug use, and improved quality of sleep and drinking water were the secondary outcomes of the post-test and a 12-month follow-up.


Assuntos
Movimentos Oculares , Transtornos de Enxaqueca , Feminino , Humanos , Corrida Moderada , Transtornos de Enxaqueca/prevenção & controle , Transtornos de Enxaqueca/diagnóstico , Terapia por Exercício , Resultado do Tratamento
13.
J Therm Biol ; 110: 103358, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36462864

RESUMO

Jogging trails have been constructed in residential areas in Kuwait City to encourage people to exercise in outdoor spaces. The weather is hot and arid for most of the year. To create a comfortable and healthy local microclimate condition, trails were constructed along a certain direction with respect to the direction of the main prevailing wind and shaded with trees. In this study, the combined effects of tree shading and trail direction on trail surface temperature and physiological equivalent temperature (PET) were investigated. The prime focus is on a PET thermal comfort range between 21.6 °C and 30.1 °C and the period between 5:00 p.m. and 10:00 p.m. The results indicate that the shade of trees effectively protects the trail surface if the shaded trail is along the N-S direction, but it is ineffective if the shaded trail is along the E-W direction. PET analyses indicate that tree shading is irrelevant to thermal comfort only in spring, during which the thermal comfort of all trials was neutral between 5:00 p.m. and 10:00 p.m. E-W is the most comfortable trail in winter and summer. The trees along the E-W direction trail slow down wind speed and increase the relative humidity, which is desirable in arid environments. The E-W trail is the most comfortable because the trees protect people from hot winds in the summer and cold winds in winter. The results of the present investigation provide information of interest for urban designers, who can attain comfortable and healthy local microclimate conditions by choosing the correct trail direction and considering tree shading.


Assuntos
Corrida Moderada , Árvores , Humanos , Temperatura , Microclima , Estações do Ano
14.
J Int Soc Sports Nutr ; 19(1): 664-676, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36518491

RESUMO

Background: Although previous studies have shown that aerobic and resistance exercise increase high-density lipoprotein cholesterol (HDL-C) levels, the optimal type of exercise has not been determined. Therefore, the purpose of this study was to investigate the association of jogging (a type of aerobic exercise) and weight training (a type of resistance exercise) with HDL-C levels in Taiwanese adults. Methods: The data used in this cross-sectional study were obtained from the Taiwan Biobank (TWB), which is a national health resource that contains the genetic information of Taiwanese volunteers aged 30-70 years. A total of 75,635 subjects (47,881 women and 27,754 men) were included in this study. The subjects were divided into four groups: jogging (n = 2,278), weight training (n = 522), mixed exercise (n = 519), and no exercise (n = 72,316). The TWB data were collected through questionnaires (e.g. basic characteristics, lifestyle factors, and disease history), biochemical tests, and anthropometric measurements. Results: Compared with no exercise, jogging, weight training, and mixed exercise were all associated with higher HDL-C levels (ß = 2.5470, 2.6249, and 3.2117, respectively). As seen, the ß value was highest for the mixed exercise group, followed by weight training and then jogging (p for trend <0.0001). Conclusions: In the current study, jogging and weight training were individually associated with higher levels of HDL-C. Engaging in both activities was associated with much higher levels of HDL-C. Our findings suggest that regular jogging and weight training might play an important role in increasing HDL-C levels.


Assuntos
Exercício Físico , Corrida Moderada , Masculino , Adulto , Humanos , Feminino , Estudos Transversais , HDL-Colesterol , Levantamento de Peso
15.
Artigo em Inglês | MEDLINE | ID: mdl-36361258

RESUMO

In recent years, the impact of the urban environment on residents' physical activity (PA) has received extensive attention, but whether this impact has differences in the jogging preferences of residents in different footpath environments and different genders requires further research. Therefore, based on jogging trajectory data, this paper uses the grouping multiple linear regression model to study the different influencing factors of different footpath environments on the jogging of residents of different genders. The results show that (1) jogging activities (JA) were mainly concentrated in the community footpath environment, and its peak was reached at night; (2) the rise and fall of elements in built environments, social environments, and natural environments significantly affected the relative jogging distance of residents; (3) Residential land density (RLD) has a positive impact on the JA of community and green land footpaths and has a negative impact on the JA of urban footpaths. However, arterial road density (ARD) and bus distance density (BDD) have opposite significant effects on the JA of communities and green land footpaths; (4) ARD has the significant opposite effect on the JA for residents of different genders on urban footpaths and community footpaths. Facilities diversity (FD), population density (PD), and bus stop density (BSD) also had significant opposite effects on the JA of residents of different genders on green land footpaths. In general, we put forward a method theory to identify the footpath environment and provide references for improving the layout and construction of different gender residents for different footpath environment elements.


Assuntos
Meio Ambiente , Corrida Moderada , Feminino , Humanos , Masculino , Exercício Físico , Meio Social , Pesquisa Empírica
16.
Physiol Rep ; 10(15): e15418, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35924333

RESUMO

Whole Body Periodic Acceleration (WBPA, pGz), is a bed that moves the body headward to forward, adds pulses to the circulation inducing descent of the dicrotic notch (DN) on the pulse waveform with an increase in a/b ratio (a = the height of the pulse waveform and b = the height of the secondary wave). Since the WBPA is large, heavy, and non-portable, we engineered a portable device (Jogging Device, JD). JD simulates passive jogging and introduces pulsations to the circulation. We hypothesized that JD would increase the a/b ratio during and after its use. In Study A, a single-arm placebo-controlled cross-over trial was conducted in24 adults (53.8 ± 14.4 years) using JD or control (CONT) for 30 min. Blood pressure (BPs and BPd) and photoplethysmograph pulse (a/b) were measured at baseline (BL), during 30 min of JD or CONT, and 5 and 60 min after. In Study B (n = 20, 52.2 ± 7 years), a single-arm observational trial of 7 consecutive days of JD on BP and a/b, measured at BL, and after 7 days of JD and 48 and 72 hr after its discontinuation. In Study A, BPs, and BPd decreased during JD by 13% and 16%, respectively, while in CONT both increased by 2% and 2.5%, respectively. The a/b increased by 2-fold and remained greater than 2-fold at all-time points, with no change in a/b during CONT. In Study B, BPs and BPd decreased by 9% and remained below BL, at 72 hr after discontinuation of JD. DN descent also occurred after 7 days of JD with a/b increase of 80% and remained elevated by 60% for at least 72 h. JD improves acute and longer-term vascular hemodynamics with an increase in a/b, consistent with increased effects of nitric oxide (NO). JD may have significant clinical and public health implications.


Assuntos
Artérias , Corrida Moderada , Adulto , Idoso , Pressão Sanguínea , Estudos Cross-Over , Humanos , Pessoa de Meia-Idade , Óxido Nítrico/farmacologia
17.
Am J Health Behav ; 46(2): 114-123, 2022 04 20.
Artigo em Inglês | MEDLINE | ID: mdl-35501961

RESUMO

Objectives: Injuries are common events that impair the function of joggers; it is important to take effective measures to reduce the incidence of jogging injuries to maximize its benefits. Methods: We collected questionnaires from 3468 Chinese exercisers using a stratified random sampling method. We analyzed these data using AMOS 22.0 (IBM) and SPSS 26.0 (IBM). Results: We constructed a relationship model of jogging risk cognition, jogging risk behaviors, and jogging injury incidence, and the indicators fit well. The path coefficient between jogging risk cognition and jogging risk behaviors of joggers was -0.64; the path coefficient between jogging risk behaviors and jogging injuries incidence was 0.44; and the path coefficient between jogging risk cognition and jogging injuries incidence was -0.23. Conclusions: The higher the level of jogging risk cognition of joggers, the lower their jogging risk behaviors, leading to a lower incidence of jogging injuries. Based on the generally low level of jogging risk cognition of joggers, the construction of a jogging risk cognitive education system that can be integrated into universities, middle schools and primary schools, as well as family, school and society, is conducive to comprehensively improve the level of jogging risk cognition of joggers.


Assuntos
Corrida Moderada , Projetos de Pesquisa , Cognição , Humanos , Instituições Acadêmicas
18.
Artigo em Inglês | MEDLINE | ID: mdl-35565043

RESUMO

Many studies have demonstrated that outdoor physical activity positively affects the physical health of young people. Here, we aimed to examine the extent to which outdoor jogging was associated with the physical health of youths, and then to decipher whether a dose-response relationship exists between them. A total of 2852 youths from a Chinese university were enrolled in a long-term experimental study between September 2018 and September 2019. We conducted two waves of physical health tests for 2852 youths (before and after the jogging interventions in 2018 and 2019, respectively) using China's National Student Physical Health Standard (NSPHS). Paired t-tests were used to examine statistical differences. A multiple regression model was used to evaluate the associations between jogging and physical health. The results showed that: statistically significant changes in the two waves of physical health outcomes were suggested after jogging interventions; outdoor jogging in campus green space was associated with participants' physical health after controlling for covariates; and a dose-response relationship between jogging and physical health outcomes was revealed, with 120-140 km/year (approximately 3.43-4 km/week) being the most effective intervention dose. Our findings have implications for promoting physical health in youth groups by encouraging outdoor physical activity.


Assuntos
Corrida Moderada , Parques Recreativos , Adolescente , Humanos , Corrida Moderada/fisiologia
19.
Biomed Res Int ; 2022: 6450844, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35187168

RESUMO

AIMS: Type 2 diabetes (T2D) is associated with sarcopenia and decreased muscle strength. Explosive and isometric voluntary handgrip strengths (EHGS and HGS) are frequently utilized methods to ascertain health status and a marker of overall muscle strength. We have previously shown that a portable, motorized device, which produces effortless, rapid stepping in place (passive simulated jogging device (JD)), improves glucose homeostasis. This study quantitatively evaluated the effects of JD in modifying parameters of the modified EHGS curve in T2D and nondiabetic (ND) subjects. METHODS: Twenty-one adult participants (11 ND and 10 T2D) (mean age: 41.3 ± 13.5 yr) performed a modified explosive handgrip strength (EHGS) test on study day 1 followed by daily use of JD (90 min per day) for 7 days. The EHGS was repeated after 3 and 7 days' use of JD (JD3 and JD7) and 3 days after completion of JD (Carryover). EHGS curves were analyzed for the following: maximal peak force value (MAX); rate of force development at 25%,75%, and 90% of maximum force; and maximum force (RFD25%, RFD75%, RFD90%, and RFDmax); time to 90%, 75%, and 25% of maximal force (t 90, t 75, t 25) and time to maximal force (t max); and the integrated area under the curve for force vs. time until task failure (iAUCTF); and fatigue resistance times at 50% and 25% of maximal force (FR50 and FR25) and fatigue resistance time to task failure (FRTF). RESULTS: At baseline, T2D had lower MAX compared to ND. There were no differences at baseline for force development time or fatigue resistance time between T2D and ND. In both T2D and ND, 7 days of JD increased FR25 and FRTF and iAUCTF compared to baseline. CONCLUSION: JD for at least 7 days prior to EHGS increased time to task failure (fatigue resistance) and iAUCTF of the force-time curve. JD is a reasonable intervention to decrease sedentary behavior and improve muscle fatigue resistance under various clinical and nonclinical scenarios. This trial is registered with NCT03550105 (08-06-2018).


Assuntos
Diabetes Mellitus Tipo 2/fisiopatologia , Força da Mão/fisiologia , Corrida Moderada , Fadiga Muscular/fisiologia , Adulto , Feminino , Humanos , Masculino
20.
Sensors (Basel) ; 22(4)2022 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-35214542

RESUMO

In this paper, human step length was estimated based on wireless channel properties and the received signal strength indicator (RSSI) method. Path loss between two ankles of the person under test was converted from the RSSI, which was measured using our developed wearable transceivers with embedded micro-controllers in four scenarios, namely indoor walking, outdoor walking, indoor jogging, and outdoor jogging. For brevity, we call it on-ankle path loss. The histogram of the on-ankle path loss showed clearly that there were two humps, where the second hump was closely related to the maximum path loss, which, in turn, corresponded to the step length. This histogram can be well approximated by a two-term Gaussian fitting curve model. Based on the histogram of the experimental data and the two-term Gaussian fitting curve, we propose a novel filtering technique to filter out the path loss outliers, which helps set up the upper and lower thresholds of the path loss values used for the step length estimation. In particular, the upper threshold was found to be on the right side of the second Gaussian hump, and its value was a function of the mean value and the standard deviation of the second Gaussian hump. Meanwhile, the lower threshold lied on the left side of the second hump and was determined at the point where the survival rate of the measured data fell to 0.68, i.e., the cumulative distribution function (CDF) approached 0.32. The experimental data showed that the proposed filtering technique resulted in high accuracy in step length estimation with errors of only 10.15 mm for the indoor walking, 4.40 mm for the indoor jogging, 4.81 mm for the outdoor walking, and 10.84 mm for the outdoor jogging scenarios, respectively.


Assuntos
Corrida Moderada , Caminhada , Tornozelo , Humanos , Distribuição Normal
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...