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Khan H, Naseer N, Mirtaheri P. A feasibility study investigating cortical hemodynamic changes during infinity walk with fNIRS. IBRO Neurosci Rep 2024; 16:309-316. [PMID: 38390233 PMCID: PMC10882108 DOI: 10.1016/j.ibneur.2024.01.003] [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: 10/09/2023] [Revised: 12/16/2023] [Accepted: 01/19/2024] [Indexed: 02/24/2024] Open
Abstract
This study seeks to explore the correlation between cortical activation and the Infinity Walk pattern, examining how the influence of foot overpronation and footwear may impact motor control. Functional near-infrared spectroscopy (fNIRS), a portable and user-friendly neuroimaging technique, was used to measure hemodynamical changes in six individuals with non-critical pronation degrees. Participants perform the Infinity Walk under various footwear conditions while wearing an fNIRS portable imaging device. Results indicate a consistent hemodynamic pattern in both hemispheres during the Infinity Walk, with no significant differences observed across subjects and footwear conditions in the prefrontal cortex (PFC), pre-motor area, the supplementary motor cortex (PMA & SMC), the primary motor cortex (PMC), and Wernicke's area (WA). The impact of pronation and footwear on motor control remains inconclusive due to inconsistent hemodynamic patterns. Notably, the activation patterns in Broca's area (BA) and the temporal gyrus (TG) differ significantly from other brain regions. The balanced hemodynamic responses in the bilateral hemispheres may be attributed to the Infinity Walk's inherent walking pattern. These findings indicate a need for further investigation into the Infinity Walk to examine the similarities and distinctions in activation patterns within specific brain regions. Additionally, the impact of pronation necessitates more substantial experimental research to establish a correlation between pronation and cortical hemodynamics.
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Affiliation(s)
- Haroon Khan
- Department of Mechanical, Electronics, and Chemical Engineering, Oslo Metropolitan University, Pilestredet 46, 0167 Oslo, Norway
| | - Noman Naseer
- Department of Mechatronics and Biomedical Engineering, Islamabad, Pakistan
| | - Peyman Mirtaheri
- Department of Mechanical, Electronics, and Chemical Engineering, Oslo Metropolitan University, Pilestredet 46, 0167 Oslo, Norway
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Scharf I. Search patterns, resource regeneration, and ambush locations impact the competition between active and ambush predators. Ann N Y Acad Sci 2024; 1536:122-134. [PMID: 38861340 DOI: 10.1111/nyas.15169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Many predators ambush prey rather than pursue them or shift between foraging modes. Active predators typically encounter prey more frequently than ambush predators. I designed a simulation model to examine whether this always holds and how active and ambush predators fare in capturing mobile prey. Prey foraged for clumped resources using area-restricted search, shifting from directional movement before resource encounter to less directional movement afterward. While active predators succeeded more than ambush predators, the advantage of active predators diminished when ambush predators were positioned inside resource patches rather than outside. I investigated the impact of eight treatments and their interactions. For example, regeneration of prey resources increased the difference between ambush predators inside and outside patches, and uncertain prey capture by predators decreased this difference. Several interactions resulted in outcomes different from each factor in isolation. For instance, reducing the directionality level of active predators impacted moderately when applied alone, but when combined with resource regeneration it led to the worst success of active predators against ambush predators inside patches. Ambush predators may not always be inferior to active predators, and one should consider the key traits of the studied system to predict the relative success of these two foraging modes.
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Affiliation(s)
- Inon Scharf
- School of Zoology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
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3
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Rampichini S, Limonta E, Zago M, Bisconti AV, Bertozzi F, Cè E, Borrelli M, Sforza C, Esposito F. Speed Effects on the Accuracy of Heart Rate as Oxygen-Uptake Indicator in Short-Distance Shuttle Running. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2024; 95:529-536. [PMID: 38100578 DOI: 10.1080/02701367.2023.2275800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 10/22/2023] [Indexed: 12/17/2023]
Abstract
Purpose: Despite the accuracy of heart rate (HR) as an indicator of the aerobic engagement has been evaluated in several intermittent on-court activities, its validity as an oxygen uptake (V ˙ O 2 ) indicator during shuttle running over short paths remains uncertain. Moreover, it is unclear whether speed may affect such validity. This study evaluated the HR ability in estimating the V ˙ O 2 during 5-m shuttle running at different speeds. Methods: V ˙ O 2 and HR of 12 physically active young men were recorded during an incremental forward running (FW) protocol and a 5-m shuttle test at 50%, 60%, and 75% of maximal aerobic speed (MAS). Slope and intercept of the relationship between HR and V ˙ O 2 (HR/V ˙ O 2 ) were individually determined, in both protocols. The HR measured during the shuttle test was used in the FW HR/V ˙ O 2 to estimate V ˙ O 2 at each shuttle speed. A paired Student's t-test compared slopes and intercepts of the two HR/V ˙ O 2 . A two-way RM-ANOVA and an equality test examined, respectively, the differences and the equality between measured and estimated V ˙ O 2 . Lastly, a Bland-Altman plot described the accuracy and precision of the estimated V ˙ O 2 at each shuttle intensity. Results: Slopes and intercepts of the HR/V ˙ O 2 appeared not different between FW and shuttle running. At 50%MAS, HR underestimated the V ˙ O 2 (~7%), whereas returned accurate values at the two higher velocities, although with high variability (±18%). Conclusions: When using HR as V ˙ O 2 indicator during shuttle running over short paths, a separated analysis of the HR validity as V ˙ O 2 indicator is recommended especially when administering different exercise intensities.
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Affiliation(s)
| | - Eloisa Limonta
- Università degli Studi di Milano
- IRCSS Ospedale Galeazzi-Sant'Ambrogio
| | | | | | | | - Emiliano Cè
- Università degli Studi di Milano
- IRCSS Ospedale Galeazzi-Sant'Ambrogio
| | | | | | - Fabio Esposito
- Università degli Studi di Milano
- IRCSS Ospedale Galeazzi-Sant'Ambrogio
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4
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Scharf I, Hanna K, Gottlieb D. Experimental arena settings might lead to misinterpretation of movement properties. INSECT SCIENCE 2024; 31:271-284. [PMID: 37231528 DOI: 10.1111/1744-7917.13213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/07/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023]
Abstract
Movement is an important animal behavior contributing to reproduction and survival. Animal movement is often examined in arenas or enclosures under laboratory conditions. We used the red flour beetle (Tribolium castaneum) to examine here the effect of the arena size, shape, number of barriers, access to the arena's center, and illumination on six movement properties. We demonstrate great differences among arenas. For example, the beetles moved over longer distances in clear arenas than in obstructed ones. Movement along the arena's perimeter was greater in smaller arenas than in larger ones. Movement was more directional in round arenas than in rectangular ones. In general, the beetles stopped moving closer to the perimeter and closer to corners (in the square and rectangular arenas) than expected by chance. In some cases, the arena properties interacted with the beetle sex to affect several movement properties. All these suggest that arena properties might also interact with experimental manipulations to affect the outcome of studies and lead to results specific to the arena used. In other words, instead of examining animal movement, we in fact examine the animal interaction with the arena structure. Caution is therefore advised in interpreting the results of studies on movement in arenas under laboratory conditions and we recommend paying attention also to barriers or obstacles in field experiments. For instance, movement along the arena's perimeter is often interpreted as centrophobism or thigmotaxis but the results here show that such movement is arena dependent.
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Affiliation(s)
- Inon Scharf
- The George S. Wise Faculty of Life Sciences, School of Zoology, Tel Aviv University, Tel Aviv, Israel
| | - Kimberley Hanna
- The George S. Wise Faculty of Life Sciences, School of Zoology, Tel Aviv University, Tel Aviv, Israel
| | - Daphna Gottlieb
- Department of Food Science, Institute of Post-Harvest and Food Science, Volcani Center, ARO, Rishon LeZion, Israel
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Vähä-Ypyä H, Husu P, Vasankari T, Sievänen H. Floating Epoch Length Improves the Accuracy of Accelerometry-Based Estimation of Coincident Oxygen Consumption. SENSORS (BASEL, SWITZERLAND) 2023; 24:76. [PMID: 38202938 PMCID: PMC10780720 DOI: 10.3390/s24010076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/13/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024]
Abstract
Estimation of oxygen consumption (VO2) from accelerometer data is typically based on prediction equations developed in laboratory settings using steadily paced and controlled test activities. These equations may not capture the temporary changes in VO2 occurring in sporadic real-life physical activity. In this study, we introduced a novel floating epoch for accelerometer data analysis and hypothesized that an adaptive epoch length provides a more consistent estimation of VO2 in irregular activity conditions than a 6 s constant epoch. Two different activity tests were conducted: a progressive constant-speed test (CS) performed on a track and a 6 min back-and-forth walk test including accelerations and decelerations (AC/DC) performed as fast as possible. Twenty-nine adults performed the CS test, and sixty-one performed the AC/DC test. The data were collected using hip-worn accelerometers and a portable metabolic gas analyzer. General linear models were employed to create the prediction models for VO2 that were cross-validated using both data sets and epoch types as training and validation sets. The prediction equations based on the CS test or AC/DC test and 6 s epoch had excellent performance (R2 = 89%) for the CS test but poor performance for the AC/DC test (31%). Only the VO2 prediction equation based on the AC/DC test and the floating epoch had good performance (78%) for both tests. The overall accuracy of VO2 prediction is compromised with the constant length epoch, whereas the prediction model based on irregular acceleration data analyzed with a floating epoch provided consistent performance for both activities.
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Affiliation(s)
- Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, 33500 Tampere, Finland; (H.V.-Y.); (P.H.); (T.V.)
| | - Pauliina Husu
- The UKK Institute for Health Promotion Research, 33500 Tampere, Finland; (H.V.-Y.); (P.H.); (T.V.)
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, 33500 Tampere, Finland; (H.V.-Y.); (P.H.); (T.V.)
- Faculty of Medicine and Health Technology, Tampere University, 33014 Tampere, Finland
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, 33500 Tampere, Finland; (H.V.-Y.); (P.H.); (T.V.)
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Çiftçi R, Kurtoğlu A, Eken Ö, Durmaz D, Eler S, Eler N, Aldhahi MI. Investigation of Factors Affecting Shuttle Walking Performance at Increased Speed for Patients with Chronic Obstructive Pulmonary Disease. J Clin Med 2023; 12:4752. [PMID: 37510866 PMCID: PMC10381562 DOI: 10.3390/jcm12144752] [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: 05/12/2023] [Revised: 07/12/2023] [Accepted: 07/16/2023] [Indexed: 07/30/2023] Open
Abstract
The aim of this study was to examine the factors affecting the shuttle walking test (SWT) in patients with chronic obstructive pulmonary disease (COPD). A total of 29 patients with COPD (the COPD group) and a healthy group (HG) of 34 women aged between 55 and 74 years were included in the study. After the pulmonary function profiles of the participants were assessed, and the SWT was performed. Walking distances, walking speeds, and SWT levels (SWT-L) were determined with the SWT. Before and after the SWT, the heart rate (HR), oxygen saturation level (SPO2), and Borg scale (perceived exertion (BSe) and dyspnea (BSd)) results were analyzed with a paired sample t-test. The dyspnea levels during activity of daily living were determined with the Medical Research Council (MRC) dyspnea scale, and the relationship between MRC dyspnea (MRCD) and walking distance, speed, and SWT-L was tested using multiple linear regression and Pearson correlation analysis. The walking distance, speed, and SWT-L were lower in the COPD group (p < 0.001) than in the HG. The HR values before and after the SWT changed significantly in the COPD group and the HG (p< 0.001), and the effect size was higher in the COPD group. Although the BSe and BSd results before and after the SWT in the COPD group increased significantly (p < 0.001), they did not change in the HG. There was a highly negative correlation between MRCD and walking distance, speed, and SWT-L in the COPD group (p = 0.002, p = 0.000, and p = 0.001, respectively), but no correlation was found in the HG. The results showed that the HR, perceived exertion, and dyspnea levels of women with COPD whose respiratory functions were lower than the HG were significantly affected on the SWT.
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Affiliation(s)
- Rukiye Çiftçi
- Department of Anatomy, Medical Faculty, Gaziantep Islamic Science and Technology University, Gaziantep 27260, Turkey;
| | - Ahmet Kurtoğlu
- Department of Coaching Education, Sport Science Faculty, Bandirma Onyedi Eylul University, Balikesir 10250, Turkey;
| | - Özgür Eken
- Department of Physical Education and Sport Teaching, Inonu University, Malatya 44000, Turkey;
| | - Dilber Durmaz
- Department of Thoracic Diseases, Balikesir, Medical Faculty, Bandirma Onyedi Eylul University, Bandırma 10250, Turkey;
| | - Serdar Eler
- Department of Coaching Education, Faculty of Sport Sciences, Gazi University, Ankara 06560, Turkey;
| | - Nebahat Eler
- Department of Coaching Education, School of Physical Education and Sports, Zonguldak Bulent Ecevit University, Zonguldak 67100, Turkey;
| | - Monira I. Aldhahi
- Department of Rehabilitation Sciences, College of Health and Rehabilitation Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
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7
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Embodied decision biases: individually stable across different tasks? Exp Brain Res 2023; 241:1053-1064. [PMID: 36907885 PMCID: PMC10082122 DOI: 10.1007/s00221-023-06591-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 03/01/2023] [Indexed: 03/14/2023]
Abstract
In everyday life, action and decision-making often run in parallel. Action-based models argue that action and decision-making strongly interact and, more specifically, that action can bias decision-making. This embodied decision bias is thought to originate from changes in motor costs and/or cognitive crosstalk. Recent research confirmed embodied decision biases for different tasks including walking and manual movements. Yet, whether such biases generalize within individuals across different tasks remains to be determined. To test this, we used two different decision-making tasks that have independently been shown to reliably produce embodied decision biases. In a within-participant design, participants performed two tasks in a counterbalanced fashion: (i) a walking paradigm for which it is known that motor costs systematically influence reward decisions, and (ii) a manual movement task in which motor costs and cognitive crosstalk have been shown to impact reward decisions. In both tasks, we successfully replicated the predicted embodied decision biases. However, there was no evidence that the strength of the biases correlated between tasks. Hence, our findings do not confirm that embodied decision biases transfer between tasks. Future research is needed to examine whether this lack of transfer may be due to different causes underlying the impact of motor costs on decisions and the impact of cognitive crosstalk or task-specific differences.
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8
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Ahn HN, Lee MG, Jung WS. Effects of gradient and age on energy expenditure and fat metabolism during aerobic exercise at equal intensity in women. Phys Act Nutr 2022; 26:20-27. [PMID: 35510442 PMCID: PMC9081356 DOI: 10.20463/pan.2022.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 03/30/2022] [Indexed: 11/22/2022] Open
Abstract
[Purpose] This study aimed to investigate the effects of gradient and age on energy expenditure and fat metabolism during aerobic exercise at equal intensity in women. [Methods] Thirty women in their twenties (n=15) and fifties (n=15) were enrolled. All subjects performed aerobic exercise on a treadmill for 10 min at 0% and 6% gradient repeatedly to elicit 50%, 60%, and 70% VO2max. [Results] Energy expenditure and fat oxidation were higher during aerobic exercise at 6% of the gradient than at 0%, and there was no significant difference in carbohydrate oxidation in any age group. [Conclusion] Aerobic exercise at a 6% gradient was more favorable for fat oxidation than a 0% gradient in all age groups. In particular, in the case of women in their fifties, walking on a gradient of 6%, which is favorable for increasing fat oxidation, was more effective than walking on flat ground for preventing and reducing obesity. However, to examine the difference in fat oxidation among exercise intensities more accurately, exercise performed for longer than 30 min is required. Follow-up studies are required to investigate the effect of various gradients on physiological and metabolic characteristics when carrying out aerobic exercises for more than 30 min.
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9
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Ben-Zaken S, Eliakim A, Nemet D, Kaufman L, Meckel Y. Genetic characteristics of competitive swimmers: a review. Biol Sport 2022; 39:157-170. [PMID: 35173374 PMCID: PMC8805353 DOI: 10.5114/biolsport.2022.102868] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/07/2020] [Accepted: 01/11/2021] [Indexed: 12/04/2022] Open
Abstract
A successful swimming performance is a multi-factorial accomplishment, resulting from a complex interaction of physical, biomechanical, physiological and psychological factors, all of which are strongly affected by the special medium of water as well as by genetic factors. The nature of competitive swimming is unique, as most of the competitive events last less than four minutes. Yet training regimens have an endurance nature (many hours and many kilometres of swimming every day), which makes it impossible to classify swimming by definitions of aerobic-type or anaerobic-type events, as in track and field sports. Therefore, genetic variants associated with swimming performance are not necessarily related to metabolic pathways, but rather to blood lactate transport (MCT1), muscle functioning (IGF1 axis), muscle damage (IL6) and others. The current paper reviews the main findings on the leading 12 genetic polymorphisms (located in the ACE, ACTN3, AMPD1, BDKRB2, IGF1, IL6, MCT1, MSTN, NOS3, PPARA, PPARGC1A, and VEGFR2 genes) related to swimming performance, while taking into consideration the unique environment of this sport.
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Affiliation(s)
- Sigal Ben-Zaken
- Genetics and Molecular Biology Laboratory, The Academic College at the Wingate, Wingate Institute, Netanya, Israel
| | - Alon Eliakim
- Child Health and Sports Center, Pediatric Department, Meir Medical Center, Kfar Saba, Israel
| | - Dan Nemet
- Child Health and Sports Center, Pediatric Department, Meir Medical Center, Kfar Saba, Israel
| | - Leonid Kaufman
- Exercise Physiology Laboratory, The Academic College at the Wingate, Wingate Institute, Netanya, Israel
| | - Yoav Meckel
- Exercise Physiology Laboratory, The Academic College at the Wingate, Wingate Institute, Netanya, Israel
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10
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Hobo K, Kurita H, Momose K. The relationship between energy expenditure and physical functions in patients hospitalised for stroke. Sci Rep 2021; 11:21685. [PMID: 34737355 PMCID: PMC8568978 DOI: 10.1038/s41598-021-01135-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/21/2021] [Indexed: 11/09/2022] Open
Abstract
We assessed the relationship between energy expenditure (EE) and Functional Independence Measure motor items (FIM-M) score, Berg Balance Scale (BBS) score, and comfortable walking speed (CWS) in patients hospitalised for stroke. The total EE per day (TEE), EE during rehabilitation (REE), and EE during activities other than rehabilitation (OEE) were measured using a single-axis acceleration sensor in 36 patients hospitalised for the first stroke episode. In addition, the relationships between each type of EE and FIM-M, BBS, and CWS were investigated. In these patients (mean age 66.2 ± 10.6 years), the median values of TEE, REE, and OEE were 41.8 kcal, 18.5 kcal, and 16.6 kcal, respectively. Correlations were observed between each EE type and all physical function indices. Following the stratification of patients into two groups (high and low) based on the level of physical function, a significant correlation between EE type and physical function was observed only in the low BBS group. EE was correlated with overall physical function indices, but the trend differed depending on physical ability. When patients were stratified based on ability, there were several groups with no significant correlation. Therefore, several patients were unable to achieve an appropriate EE for their level of physical function.
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Affiliation(s)
- Kota Hobo
- Department of Rehabilitation, Setagaya Rehabilitation Hospital, 6-37-1 Matsubara, Setagaya, Tokyo, 156-0043, Japan.
| | - Hideaki Kurita
- Department of Physical Therapy, School of Health Sciences, Tokyo University of Technology, Tokyo, Japan
| | - Kimito Momose
- Department of Physical Therapy, School of Health Sciences, Shinshu University, Matsumoto, Japan
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11
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Gunner RM, Holton MD, Scantlebury DM, Hopkins P, Shepard ELC, Fell AJ, Garde B, Quintana F, Gómez-Laich A, Yoda K, Yamamoto T, English H, Ferreira S, Govender D, Viljoen P, Bruns A, van Schalkwyk OL, Cole NC, Tatayah V, Börger L, Redcliffe J, Bell SH, Marks NJ, Bennett NC, Tonini MH, Williams HJ, Duarte CM, van Rooyen MC, Bertelsen MF, Tambling CJ, Wilson RP. How often should dead-reckoned animal movement paths be corrected for drift? ANIMAL BIOTELEMETRY 2021; 9:43. [PMID: 34900262 PMCID: PMC7612089 DOI: 10.1186/s40317-021-00265-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/25/2021] [Indexed: 05/19/2023]
Abstract
BACKGROUND Understanding what animals do in time and space is important for a range of ecological questions, however accurate estimates of how animals use space is challenging. Within the use of animal-attached tags, radio telemetry (including the Global Positioning System, 'GPS') is typically used to verify an animal's location periodically. Straight lines are typically drawn between these 'Verified Positions' ('VPs') so the interpolation of space-use is limited by the temporal and spatial resolution of the system's measurement. As such, parameters such as route-taken and distance travelled can be poorly represented when using VP systems alone. Dead-reckoning has been suggested as a technique to improve the accuracy and resolution of reconstructed movement paths, whilst maximising battery life of VP systems. This typically involves deriving travel vectors from motion sensor systems and periodically correcting path dimensions for drift with simultaneously deployed VP systems. How often paths should be corrected for drift, however, has remained unclear. METHODS AND RESULTS Here, we review the utility of dead-reckoning across four contrasting model species using different forms of locomotion (the African lion Panthera leo, the red-tailed tropicbird Phaethon rubricauda, the Magellanic penguin Spheniscus magellanicus, and the imperial cormorant Leucocarbo atriceps). Simulations were performed to examine the extent of dead-reckoning error, relative to VPs, as a function of Verified Position correction (VP correction) rate and the effect of this on estimates of distance moved. Dead-reckoning error was greatest for animals travelling within air and water. We demonstrate how sources of measurement error can arise within VP-corrected dead-reckoned tracks and propose advancements to this procedure to maximise dead-reckoning accuracy. CONCLUSIONS We review the utility of VP-corrected dead-reckoning according to movement type and consider a range of ecological questions that would benefit from dead-reckoning, primarily concerning animal-barrier interactions and foraging strategies.
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Affiliation(s)
- Richard M. Gunner
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Mark D. Holton
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - David M. Scantlebury
- School of Biological Sciences, Queen’s University Belfast, Belfast, 19 Chlorine Gardens, Belfast BT9 5DL, Northern Ireland, UK
| | - Phil Hopkins
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Emily L. C. Shepard
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Adam J. Fell
- Biological and Environmental Sciences, University of Stirling, Stirling FK9 4LA, Scotland, UK
| | - Baptiste Garde
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Flavio Quintana
- Instituto de Biología de Organismos Marinos (IBIOMAR), CONICET. Boulevard Brown, 2915, U9120ACD Puerto Madryn, Chubut, Argentina
| | - Agustina Gómez-Laich
- Departamento de Ecología, Genética y Evolución & Instituto de Ecología, Genética Y Evolución de Buenos Aires (IEGEBA), CONICET, Pabellón II Ciudad Universitaria, C1428EGA Buenos Aires, Argentina
| | - Ken Yoda
- Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
| | - Takashi Yamamoto
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, Nakano, Tokyo, Japan
| | - Holly English
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin, Ireland
| | - Sam Ferreira
- Savanna and Grassland Research Unit, Scientific Services Skukuza, South African National Parks, Kruger National Park, Skukuza 1350, South Africa
| | - Danny Govender
- Savanna and Grassland Research Unit, Scientific Services Skukuza, South African National Parks, Kruger National Park, Skukuza 1350, South Africa
| | - Pauli Viljoen
- Savanna and Grassland Research Unit, Scientific Services Skukuza, South African National Parks, Kruger National Park, Skukuza 1350, South Africa
| | - Angela Bruns
- Veterinary Wildlife Services, South African National Parks, 97 Memorial Road, Old Testing Grounds, Kimberley 8301, South Africa
| | - O. Louis van Schalkwyk
- Department of Agriculture, Government of South Africa, Land Reform and Rural Development, Pretoria 001, South Africa
- Department of Migration, Max Planck Institute of Animal Behavior, 78315 Radolfzell, Germany
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa
| | - Nik C. Cole
- Durrell Wildlife Conservation Trust, Les Augrès Manor, Channel Islands, Trinity JE3 5BP, Jersey, UK
- Mauritian Wildlife Foundation, Grannum Road, Indian Ocean, Vacoas, Mauritius
| | - Vikash Tatayah
- Mauritian Wildlife Foundation, Grannum Road, Indian Ocean, Vacoas, Mauritius
| | - Luca Börger
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
- Centre for Biomathematics, Swansea University, Swansea SA2 8PP, UK
| | - James Redcliffe
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Stephen H. Bell
- School of Biological Sciences, Queen’s University Belfast, Belfast, 19 Chlorine Gardens, Belfast BT9 5DL, Northern Ireland, UK
| | - Nikki J. Marks
- School of Biological Sciences, Queen’s University Belfast, Belfast, 19 Chlorine Gardens, Belfast BT9 5DL, Northern Ireland, UK
| | - Nigel C. Bennett
- Mammal Research Institute. Department of Zoology and Entomology, University of Pretoria, Pretoria 002., South Africa
| | - Mariano H. Tonini
- Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales, Grupo GEA, IPATEC-UNCO-CONICET, San Carlos de Bariloche, Río Negro, Argentina
| | - Hannah J. Williams
- Department of Migration, Max Planck Institute of Animal Behavior, 78315 Radolfzell, Germany
| | - Carlos M. Duarte
- Red Sea Research Centre, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia
| | - Martin C. van Rooyen
- Mammal Research Institute. Department of Zoology and Entomology, University of Pretoria, Pretoria 002., South Africa
| | - Mads F. Bertelsen
- Center for Zoo and Wild Animal Health, Copenhagen Zoo, Roskildevej 38, DK-2000 Frederiksberg, Denmark
| | - Craig J. Tambling
- Department of Zoology and Entomology, University of Fort Hare, Alice Campus, Ring Road, Alice 5700, South Africa
| | - Rory P. Wilson
- Swansea Lab for Animal Movement, Department of Biosciences, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK
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12
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Guimarães RDF, Josaphat KJ, Reid R, Henderson M, Barnett TA, Mathieu ME. Reduction in ambulatory distance from childhood through adolescence: The impact of the number and length of steps. J Exerc Sci Fit 2020; 19:66-70. [PMID: 33312208 PMCID: PMC7721637 DOI: 10.1016/j.jesf.2020.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 08/24/2020] [Accepted: 08/27/2020] [Indexed: 11/28/2022] Open
Abstract
Background The aim of this study was to explore the relationship between ambulatory distance with steps/day and increased step length as children age. Methods This is a prospective cohort study. Forty-five children from the QUALITY cohort were assessed at childhood (baseline) and seven years later during adolescence (follow-up). Daily step count was evaluated by accelerometry, step length by a standardized test, and daily ambulatory distance was calculated based on step count and length. Results Children grew by an average of 0.33 m from childhood to adolescence (p < 0.001). The daily ambulatory distance decreased by an average 3008 m from childhood to adolescence (p < 0.001). Step length increased an average of 0.10 m (p < 0.001) from childhood to adolescence, while the number of steps taken decreased by an average of 5549 steps (childhood to adolescence) (p < 0.001). The change in the number of steps between childhood and adolescence represents 84.6% of the change in the ambulatory distance while the change in step length explained an additional 13.0% Conclusions The decrease in the ambulatory distance from childhood to adolescence was strongly explained by the decrease in step count; however the increase in step length should not to be neglected.
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Affiliation(s)
- Roseane de Fátima Guimarães
- School of Kinesiology and Exercise Sciences, Faculty of Medicine, Université de Montréal, Montreal, Canada.,Sainte-Justine University Hospital Research Center, Montreal, Canada
| | - Kapria-Jad Josaphat
- School of Kinesiology and Exercise Sciences, Faculty of Medicine, Université de Montréal, Montreal, Canada
| | - Ryan Reid
- Human Kinetics Department, St Francis Xavier University, Antigonish, Canada
| | - Mélanie Henderson
- Sainte-Justine University Hospital Research Center, Montreal, Canada.,Department of Pediatrics, Université de Montréal, Montreal, Canada
| | - Tracie Ann Barnett
- Sainte-Justine University Hospital Research Center, Montreal, Canada.,Department of Family Medicine, McGill University, Montreal, Canada
| | - Marie-Eve Mathieu
- School of Kinesiology and Exercise Sciences, Faculty of Medicine, Université de Montréal, Montreal, Canada.,Sainte-Justine University Hospital Research Center, Montreal, Canada
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13
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Temporiti F, Cescon C, Adamo P, Natali F, Barbero M, De Capitani F, Gatti R. Dispersion of knee helical axes during walking in young and elderly healthy subjects. J Biomech 2020; 109:109944. [PMID: 32807314 DOI: 10.1016/j.jbiomech.2020.109944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 06/04/2020] [Accepted: 07/08/2020] [Indexed: 10/23/2022]
Abstract
Knee joint rotation center displacement can be estimated in vivo through the analysis of helical axis (HAs) dispersion. HAs can be analyzed during walking, providing information on joint stability. The study aim was to describe knee HAs dispersion during walking in dominant and non-dominant legs of young and elderly healthy subjects. Twenty young (YG: age 23.3 ± 2.4 years) and twenty elderly (EG: age 69.3 ± 4.6 years) healthy subjects were asked to walk on a treadmill at a self-selected speed with reflective markers placed bilaterally on thighs and shanks to detect HAs dispersion and knee kinematics with an optoelectronic system. HAs dispersion was described during the following four phases of gait cycle: (1) flexion from 95% of the previous gait cycle to 10% of the subsequent gait cycle, (2) extension from 10% to 40%, (3) flexion from 40% to 75% and (4) extension from 75% to 95% of the gait cycle. Mean Distance (MD) and Mean Angle (MA) were used as HAs dispersion indexes during each gait phase. Participants showed greater MD and MA in sagittal and frontal planes during the first and second phases. EG revealed higher MD (p = 0.001) and MA (p < 0.001) during the first phase and higher MA (p = 0.001) during the fourth phase in both dominant and non-dominant legs on the sagittal plane. HAs dispersion could be related to the amount of forces acting on knee (first two phases) and knee degeneration (elderly). These results may be used as reference data in further studies on HAs dispersion in presence of knee pathologies or after knee surgery or rehabilitation.
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Affiliation(s)
- Federico Temporiti
- Physiotherapy Unit, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy; Humanitas University, Department of Biomedical Sciences, Pieve Emanuele, Milan, Italy
| | - Corrado Cescon
- Rehabilitation Research Laboratory, Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, Manno, Switzerland
| | - Paola Adamo
- Physiotherapy Unit, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy
| | - Fabrizio Natali
- Physiotherapy Unit, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy
| | - Marco Barbero
- Rehabilitation Research Laboratory, Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, Manno, Switzerland
| | - Francesca De Capitani
- Physiotherapy Unit, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy
| | - Roberto Gatti
- Physiotherapy Unit, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy; Humanitas University, Department of Biomedical Sciences, Pieve Emanuele, Milan, Italy.
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14
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Lang RL, Stockton K, Wilson C, Russell TG, Johnston LM. Exercise testing for children with cystic fibrosis: A systematic review. Pediatr Pulmonol 2020; 55:1996-2010. [PMID: 32453897 DOI: 10.1002/ppul.24794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 03/19/2020] [Accepted: 04/13/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Exercise testing is routinely used to measure exercise capacity in children with cystic fibrosis (CF). Various tests are available, however the psychometric properties of these measures have not been systematically reviewed for this population. METHOD A systematic search of electronic databases (PubMed, Web of Science, Medline, CINHAL, Cochrane, and PEDro) was performed to identify papers that: (a) reported original psychometric data, (b) examined a measure of exercise capacity, (c) examined children with CF aged eight to 18 years; and (d) were published in English after 1950. The level of psychometric evidence was evaluated using the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) checklist. RESULTS Searches identified 1025 papers. Forty-six papers were included, covering 15 tests: incremental cardiopulmonary exercise test using a cycle ergometer (CPET(cycle)) or treadmill (CPET(treadmill)), 6 minute walk test (6MWT), modified shuttle test (MST), 3-minute step test (3MST), 2 minute walk test (2MWT), Bratteby walk test, intermittent sprint test, speed ramp test, incremental step test, forward-backwards jump test (FBJT), astride jump test (AJT), motor quotient test, Munich fitness test, and Glittre ADL test. CONCLUSION There is a plethora of exercise tests available with varying psychometric robustness. The CPET, 6MWT, and MST have fair to good psychometric properties, but each with their clinical advantages and limitations. Thus, a Selection Guide was developed to assist clinicians and researchers in selecting the most appropriate exercise test for various situations.
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Affiliation(s)
- Ray Lei Lang
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Australia
| | - Kellie Stockton
- Department of Physiotherapy, Queensland Children's Hospital, Children's Health Queensland Hospital and Health Services, South Brisbane, Australia
| | - Christine Wilson
- Department of Physiotherapy, Queensland Children's Hospital, Children's Health Queensland Hospital and Health Services, South Brisbane, Australia
| | - Trevor Glen Russell
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Australia
| | - Leanne Marie Johnston
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Australia
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15
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Gunner RM, Wilson RP, Holton MD, Scott R, Hopkins P, Duarte CM. A new direction for differentiating animal activity based on measuring angular velocity about the yaw axis. Ecol Evol 2020; 10:7872-7886. [PMID: 32760571 PMCID: PMC7391348 DOI: 10.1002/ece3.6515] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 12/11/2022] Open
Abstract
The use of animal-attached data loggers to quantify animal movement has increased in popularity and application in recent years. High-resolution tri-axial acceleration and magnetometry measurements have been fundamental in elucidating fine-scale animal movements, providing information on posture, traveling speed, energy expenditure, and associated behavioral patterns. Heading is a key variable obtained from the tandem use of magnetometers and accelerometers, although few field investigations have explored fine-scale changes in heading to elucidate differences in animal activity (beyond the notable exceptions of dead-reckoning).This paper provides an overview of the value and use of animal heading and a prime derivative, angular velocity about the yaw axis, as an important element for assessing activity extent with potential to allude to behaviors, using "free-ranging" Loggerhead turtles (Caretta caretta) as a model species.We also demonstrate the value of yaw rotation for assessing activity extent, which varies over the time scales considered and show that various scales of body rotation, particularly rate of change of yaw, can help resolve differences between fine-scale behavior-specific movements. For example, oscillating yaw movements about a central point of the body's arc implies bouts of foraging, while unusual circling behavior, indicative of conspecific interactions, could be identified from complete revolutions of the longitudinal axis.We believe this approach should help identification of behaviors and "space-state" approaches to enhance our interpretation of behavior-based movements, particularly in scenarios where acceleration metrics have limited value, such as for slow-moving animals.
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Affiliation(s)
- Richard M. Gunner
- Swansea Lab for Animal Movement, BiosciencesCollege of ScienceSwansea UniversitySwanseaUK
| | - Rory P. Wilson
- Swansea Lab for Animal Movement, BiosciencesCollege of ScienceSwansea UniversitySwanseaUK
| | - Mark D. Holton
- Swansea Lab for Animal Movement, BiosciencesCollege of ScienceSwansea UniversitySwanseaUK
| | - Rebecca Scott
- Future Ocean Cluster of ExcellenceGEOMAR Helmholtz Centre for Ocean ResearchKielGermany
- Natural Environmental Research Council, Polaris HouseSwindonUK
| | - Phil Hopkins
- Swansea Lab for Animal Movement, BiosciencesCollege of ScienceSwansea UniversitySwanseaUK
| | - Carlos M. Duarte
- Red Sea Research CentreKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
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16
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Murakami H, Kawakami R, Nakae S, Yamada Y, Nakata Y, Ohkawara K, Sasai H, Ishikawa-Takata K, Tanaka S, Miyachi M. Accuracy of 12 Wearable Devices for Estimating Physical Activity Energy Expenditure Using a Metabolic Chamber and the Doubly Labeled Water Method: Validation Study. JMIR Mhealth Uhealth 2019; 7:e13938. [PMID: 31376273 PMCID: PMC6696858 DOI: 10.2196/13938] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 06/04/2019] [Accepted: 06/09/2019] [Indexed: 12/23/2022] Open
Abstract
Background Self-monitoring using certain types of pedometers and accelerometers has been reported to be effective for promoting and maintaining physical activity (PA). However, the validity of estimating the level of PA or PA energy expenditure (PAEE) for general consumers using wearable devices has not been sufficiently established. Objective We examined the validity of 12 wearable devices for determining PAEE during 1 standardized day in a metabolic chamber and 15 free-living days using the doubly labeled water (DLW) method. Methods A total of 19 healthy adults aged 21 to 50 years (9 men and 10 women) participated in this study. They followed a standardized PA protocol in a metabolic chamber for an entire day while simultaneously wearing 12 wearable devices: 5 devices on the waist, 5 on the wrist, and 2 placed in the pocket. In addition, they spent their daily lives wearing 12 wearable devices under free-living conditions while being subjected to the DLW method for 15 days. The PAEE criterion was calculated by subtracting the basal metabolic rate measured by the metabolic chamber and 0.1×total energy expenditure (TEE) from TEE. The TEE was obtained by the metabolic chamber and DLW methods. The PAEE values of wearable devices were also extracted or calculated from each mobile phone app or website. The Dunnett test and Pearson and Spearman correlation coefficients were used to examine the variables estimated by wearable devices. Results On the standardized day, the PAEE estimated using the metabolic chamber (PAEEcha) was 528.8±149.4 kcal/day. The PAEEs of all devices except the TANITA AM-160 (513.8±135.0 kcal/day; P>.05), SUZUKEN Lifecorder EX (519.3±89.3 kcal/day; P>.05), and Panasonic Actimarker (545.9±141.7 kcal/day; P>.05) were significantly different from the PAEEcha. None of the devices was correlated with PAEEcha according to both Pearson (r=−.13 to .37) and Spearman (ρ=−.25 to .46) correlation tests. During the 15 free-living days, the PAEE estimated by DLW (PAEEdlw) was 728.0±162.7 kcal/day. PAEE values of all devices except the Omron Active style Pro (716.2±159.0 kcal/day; P>.05) and Omron CaloriScan (707.5±172.7 kcal/day; P>.05) were significantly underestimated. Only 2 devices, the Omron Active style Pro (r=.46; P=.045) and Panasonic Actimarker (r=.48; P=.04), had significant positive correlations with PAEEdlw according to Pearson tests. In addition, 3 devices, the TANITA AM-160 (ρ=.50; P=.03), Omron CaloriScan (ρ=.48; P=.04), and Omron Active style Pro (ρ=.48; P=.04), could be ranked in PAEEdlw. Conclusions Most wearable devices do not provide comparable PAEE estimates when using gold standard methods during 1 standardized day or 15 free-living days. Continuous development and evaluations of these wearable devices are needed for better estimations of PAEE.
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Affiliation(s)
- Haruka Murakami
- Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - Ryoko Kawakami
- Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan.,Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan
| | - Satoshi Nakae
- Department of Nutrition and Metabolism, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan.,Graduate School of Engineering Science, Osaka University, Osaka, Japan
| | - Yosuke Yamada
- Section of Healthy Longevity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - Yoshio Nakata
- Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki, Japan
| | - Kazunori Ohkawara
- Graduate School of Informatics and Engineering, University of Electro-Communication, Tokyo, Japan
| | - Hiroyuki Sasai
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Kazuko Ishikawa-Takata
- Department of Nutrition and Metabolism, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - Shigeho Tanaka
- Department of Nutrition and Metabolism, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - Motohiko Miyachi
- Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
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17
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Zamparo P, Pavei G, Monte A, Nardello F, Otsu T, Numazu N, Fujii N, Minetti AE. Mechanical work in shuttle running as a function of speed and distance: Implications for power and efficiency. Hum Mov Sci 2019; 66:487-496. [PMID: 31203018 DOI: 10.1016/j.humov.2019.06.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 06/07/2019] [Accepted: 06/08/2019] [Indexed: 11/18/2022]
Abstract
Biomechanics (and energetics) of human locomotion are generally studied at constant, linear, speed whereas less is known about running mechanics when velocity changes (because of accelerations, decelerations or changes of direction). The aim of this study was to calculate mechanical work and power and to estimate mechanical efficiency in shuttle runs (as an example of non-steady locomotion) executed at different speeds and over different distances. A motion capture system was utilised to record the movements of the body segments while 20 athletes performed shuttle runs (with a 180° change of direction) at three paces (slow, moderate and maximal) and over four distances (5, 10, 15 and 20 m). Based on these data the internal, external and total work of shuttle running were calculated as well as mechanical power; mechanical efficiency was then estimated based on values of energy cost reported in the literature. Total mechanical work was larger the faster the velocity and the shorter the distance covered (range: 2.3-3.7 J m-1 kg-1) whereas mechanical efficiency showed an opposite trend (range: 0.20-0.50). At maximal speed, over all distances, braking/negative power (about 21 W kg-1) was twice the positive power. Present results highlight that running humans can exert a larger negative than positive power, in agreement with the fundamental proprieties of skeletal muscles in vivo. A greater relative importance of the constant speed phase, associated to a better exploitation of the elastic energy saving mechanism, is likely responsible of the higher efficiency at the longer shuttle distances.
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Affiliation(s)
- Paola Zamparo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.
| | - Gaspare Pavei
- Department of Pathophysiology and Transplantation, University of Milano, Milano, Italy
| | - Andrea Monte
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Francesca Nardello
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Takuya Otsu
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan
| | - Naoki Numazu
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan
| | - Norihisa Fujii
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan
| | - Alberto E Minetti
- Department of Pathophysiology and Transplantation, University of Milano, Milano, Italy
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18
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Energy expenditure associated with walking speed and angle of turn in children. Eur J Appl Physiol 2018; 118:2563-2576. [PMID: 30187127 PMCID: PMC6244695 DOI: 10.1007/s00421-018-3981-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 08/18/2018] [Indexed: 11/24/2022]
Abstract
Purpose Recent studies have suggested that turning is power intensive. Given the sporadic and irregular movement patterns of children, such findings have important implications for the assessment of true energy expenditure associated with habitual physical activity. The purpose of this study was to investigate the influence of walking speed and angle, and their interaction, on the energy expenditure of healthy children. Methods 20 children (10.1 ± 0.5 years; 10 boys) participated in the study. On two separate days, participants completed a turning protocol involving 3-min bouts of walking at one of the 16 speed (2.5, 3.5, 4.5, and 5.5 km h− 1) and angle (0°, 45°, 90°, and 180°) combinations, interspersed by 3 min seated rest. The movement involved 5 m straight walking interspaced with prescribed turns with speed dictated by a digital, auditory metronome. Breath-by-breath gas exchange was measured, in addition to tri-axial acceleration and magnetic field intensity recorded at 100 Hz. Results Mixed models revealed a significant main effect for speed (p < 0.006) and angle (p < 0.006), with no significant interaction between speed and angle (p > 0.006). Significant differences to straight-line walking energy expenditure within speed were established for 3.5 and 5.5 km h− 1 for 180° turns (~ 13% and ~ 30% increase, respectively). Conclusion These findings highlight the importance of accounting for the magnitude and frequency of turns completed when estimating children’s habitual physical activity and have significant implications for the assessment of daily energy expenditure.
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