Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2201260
D. De Clercq, S. Bonnaerens, P. Fiers, E. Frederick, Y. Kaneko, V. Segers
Distance running is a popular and accessible leisure-time physical activity with distinct health benefits. Recent large scale epidemiological studies have shown that the health benefits emerge even when distance running is practiced regularly at rather low doses: a minimum of 50min per week even at slow speeds of 9 km/h may suffice. Unfortunately, running comes with a high risk of developing Running-Related Injuries. RRI’s can be recurrent, costly and can be a reason to stop running and even curtail other types of physical activity. RRI’s emerge due to an imbalance between the running specific loading and the Musculo-Skeletal Loading capacity in combination with the body’s remodelling capacities. One of the best documented RRI risk factors is ‘too fast’: i.e. running at higher speeds and/or progressing too fast in speed and/or in distance. Moreover, a recent study by Malisoux et al. (2022) showed that a smaller duty factor (DF1⁄4 ratio of contact time to stride time) is a general risk factor for RRI in recreational runners. Many biomechanical running studies have focussed on running at speeds around 12 km/h. However, many recreational runners run at much slower speeds. In his 2017s lecture ‘Running Biomechanics: What did we miss?’, Martyn Shorten (Shorten & Pisciotta, 2017) reported an average speed below 10 km/h from a large-scale survey of runners. Additionally, he observed in a marathon a substantial proportion of slow runners who ran without a clear flight phase. A high DF above 50% was obvious and described as ‘grounded running’.
{"title":"Low running offers a way to make distance running a viable physical activity option for more people","authors":"D. De Clercq, S. Bonnaerens, P. Fiers, E. Frederick, Y. Kaneko, V. Segers","doi":"10.1080/19424280.2023.2201260","DOIUrl":"https://doi.org/10.1080/19424280.2023.2201260","url":null,"abstract":"Distance running is a popular and accessible leisure-time physical activity with distinct health benefits. Recent large scale epidemiological studies have shown that the health benefits emerge even when distance running is practiced regularly at rather low doses: a minimum of 50min per week even at slow speeds of 9 km/h may suffice. Unfortunately, running comes with a high risk of developing Running-Related Injuries. RRI’s can be recurrent, costly and can be a reason to stop running and even curtail other types of physical activity. RRI’s emerge due to an imbalance between the running specific loading and the Musculo-Skeletal Loading capacity in combination with the body’s remodelling capacities. One of the best documented RRI risk factors is ‘too fast’: i.e. running at higher speeds and/or progressing too fast in speed and/or in distance. Moreover, a recent study by Malisoux et al. (2022) showed that a smaller duty factor (DF1⁄4 ratio of contact time to stride time) is a general risk factor for RRI in recreational runners. Many biomechanical running studies have focussed on running at speeds around 12 km/h. However, many recreational runners run at much slower speeds. In his 2017s lecture ‘Running Biomechanics: What did we miss?’, Martyn Shorten (Shorten & Pisciotta, 2017) reported an average speed below 10 km/h from a large-scale survey of runners. Additionally, he observed in a marathon a substantial proportion of slow runners who ran without a clear flight phase. A high DF above 50% was obvious and described as ‘grounded running’.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S6 - S7"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43351833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2199286
Fu Fengqin, Huan-Huan Meng, Yu-Xi Wang, S. Jia, Fan Yang
Running performance is the primary consideration for elite runners. Track shoes such as the Nike Vaporfly 4% shoe combine both advances in midsole thickness and longitudinal bending stiffness to reduce energy loss by about 4% for elite runners (H ebert-Losier et al., 2020). It was noted that changes contact area of rearfoot or striking patterns adjust the running mode during the stance phase, such as multi-segment foot kinematics during running (Deschamps et al., 2019). Brown (Brown & Silva, 2013) found that shoes with 8mm drops will benefit the storage and energy return due to the increase of the angle of the phalangeal joint of the sagittal plane compared to running shoes with 8mm drops for amateur runners. However, little research has investigated the effect of marathon running shoes with negative drops on the sports biomechanics of elite runners.
{"title":"Effect of the racing shoes with the special heel structure on the elite runners’ lower limb biomechanics","authors":"Fu Fengqin, Huan-Huan Meng, Yu-Xi Wang, S. Jia, Fan Yang","doi":"10.1080/19424280.2023.2199286","DOIUrl":"https://doi.org/10.1080/19424280.2023.2199286","url":null,"abstract":"Running performance is the primary consideration for elite runners. Track shoes such as the Nike Vaporfly 4% shoe combine both advances in midsole thickness and longitudinal bending stiffness to reduce energy loss by about 4% for elite runners (H ebert-Losier et al., 2020). It was noted that changes contact area of rearfoot or striking patterns adjust the running mode during the stance phase, such as multi-segment foot kinematics during running (Deschamps et al., 2019). Brown (Brown & Silva, 2013) found that shoes with 8mm drops will benefit the storage and energy return due to the increase of the angle of the phalangeal joint of the sagittal plane compared to running shoes with 8mm drops for amateur runners. However, little research has investigated the effect of marathon running shoes with negative drops on the sports biomechanics of elite runners.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S61 - S63"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47074711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2199390
Ales Jurca, S. Džeroski
The fit of a shoe is an important shoe comfort factor. Foot length and width are two of the most important measurements that influence fit (Miller et al., 2000). Incorrectly fitted footwear contributes to the development of foot disorders. Studies have shown that 63–72% of participants were wearing incorrectly fitted shoes based on length and width (Buldt & Menz, 2018). However, these studies used many different ways of assessing footwear fit. Footwear brands provide size charts to help selecting the right size.
{"title":"Foot length and width variety of shoppers who purchased the same style and size of running shoes","authors":"Ales Jurca, S. Džeroski","doi":"10.1080/19424280.2023.2199390","DOIUrl":"https://doi.org/10.1080/19424280.2023.2199390","url":null,"abstract":"The fit of a shoe is an important shoe comfort factor. Foot length and width are two of the most important measurements that influence fit (Miller et al., 2000). Incorrectly fitted footwear contributes to the development of foot disorders. Studies have shown that 63–72% of participants were wearing incorrectly fitted shoes based on length and width (Buldt & Menz, 2018). However, these studies used many different ways of assessing footwear fit. Footwear brands provide size charts to help selecting the right size.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S115 - S116"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49078616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2199407
Reyna C. Crawford, J. Wannop, D. Stefanyshyn
In many sports, it is imperative to have the ability to quickly change directions, whilst avoiding injury. Faster changes of direction can be facilitated through greater horizontal ground reaction forces (GRF) and greater horizontal to vertical GRF ratios (H/V ratio). Research has shown that these results are attainable with a laterally banked surface (Wannop et al., 2014). In addition to performance, a lateral bank has the potential to restrict dangerous ankle range of motions, thus reducing a risk factor for inversion ankle sprain injuries. To incorporate a laterally banked surface into a sport setting, lateral wedged insoles can be placed inside footwear, to mimic the structure of a banked surface.
在许多运动中，快速改变方向，同时避免受伤的能力是必不可少的。较大的水平地面反作用力(GRF)和较大的水平与垂直地面反作用力比(H/V比)可以促进更快的方向变化。研究表明，这些结果可以通过侧向倾斜的表面实现(Wannop et al.， 2014)。除了性能外，侧侧卧有可能限制危险的踝关节活动范围，从而减少踝关节内翻扭伤损伤的风险因素。为了将侧向倾斜的表面纳入运动环境，侧向楔形鞋垫可以放置在鞋类内部，以模仿倾斜表面的结构。
{"title":"The influence of lateral wedged insoles on performance and ankle joint biomechanics of lateral movements","authors":"Reyna C. Crawford, J. Wannop, D. Stefanyshyn","doi":"10.1080/19424280.2023.2199407","DOIUrl":"https://doi.org/10.1080/19424280.2023.2199407","url":null,"abstract":"In many sports, it is imperative to have the ability to quickly change directions, whilst avoiding injury. Faster changes of direction can be facilitated through greater horizontal ground reaction forces (GRF) and greater horizontal to vertical GRF ratios (H/V ratio). Research has shown that these results are attainable with a laterally banked surface (Wannop et al., 2014). In addition to performance, a lateral bank has the potential to restrict dangerous ankle range of motions, thus reducing a risk factor for inversion ankle sprain injuries. To incorporate a laterally banked surface into a sport setting, lateral wedged insoles can be placed inside footwear, to mimic the structure of a banked surface.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S146 - S147"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42341516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2205648
J. Mattock, J. Steele, K. Mickle
Fewer years of running experience and a more pronated foot type are common risk factors associated with medial tibial stress syndrome (MTSS). These risk factors are thought to contribute to earlier fatigue of the antipronatory foot muscles, greater foot pronation, increased tibial loading and MTSS development (Boer et al., 2023). Following a half marathon race, the feet of 30 runner’s (median age: 35 years) were significantly more pronated (p< 0.001) than pre-race (Cowley & Marsden, 2013). Conversely, novice (21 ± 1 years) runners displayed no difference in foot pronation compared to competitive (22 ± 4 years) runners after a fatiguing protocol (Maas et al., 2018). Age is reported to influence foot posture (Redmond et al., 2008), and runners aged 31–40 years have a higher prevalence of MTSS than those aged <30 years (Boer et al., 2023). It is, therefore, necessary to assess factors that could contribute to MTSS, such as running experience and foot function, in the cohort primarily at risk.
较少的跑步经验和更多的内旋足类型是与内侧胫骨应激综合征(MTSS)相关的常见危险因素。这些风险因素被认为会导致抗旋前足肌肉的早期疲劳、足部更大的旋前、胫骨负荷的增加和MTSS的发展(Boer等，2023)。在半程马拉松比赛后，30名跑步者(中位年龄:35岁)的脚比赛前明显内翻(p< 0.001) (Cowley & Marsden, 2013)。相反，新手(21±1年)跑步者与竞技选手(22±4年)跑步者在疲劳训练后的足内旋没有差异(Maas et al.， 2018)。据报道，年龄会影响足部姿势(Redmond et al.， 2008)， 31-40岁的跑步者比30岁以下的跑步者有更高的MTSS患病率(Boer et al.， 2023)。因此，有必要评估可能导致MTSS的因素，如跑步经验和足部功能，在主要风险队列中。
{"title":"Does running experience influence static and dynamic measures of foot function?","authors":"J. Mattock, J. Steele, K. Mickle","doi":"10.1080/19424280.2023.2205648","DOIUrl":"https://doi.org/10.1080/19424280.2023.2205648","url":null,"abstract":"Fewer years of running experience and a more pronated foot type are common risk factors associated with medial tibial stress syndrome (MTSS). These risk factors are thought to contribute to earlier fatigue of the antipronatory foot muscles, greater foot pronation, increased tibial loading and MTSS development (Boer et al., 2023). Following a half marathon race, the feet of 30 runner’s (median age: 35 years) were significantly more pronated (p< 0.001) than pre-race (Cowley & Marsden, 2013). Conversely, novice (21 ± 1 years) runners displayed no difference in foot pronation compared to competitive (22 ± 4 years) runners after a fatiguing protocol (Maas et al., 2018). Age is reported to influence foot posture (Redmond et al., 2008), and runners aged 31–40 years have a higher prevalence of MTSS than those aged <30 years (Boer et al., 2023). It is, therefore, necessary to assess factors that could contribute to MTSS, such as running experience and foot function, in the cohort primarily at risk.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S201 - S202"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45504747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2199400
Julian Fritz, Melanie Knopp, Harry Miles, Daniel Ruiz, Aaron Martínez, T. Stoeggl, Sasa Cigoja
With increasing popularity and due to the performance altering relevance of equipment, trail running has become of particular interest for the sporting goods industry. Research has shown that especially downhill running (DR) plays a decisive role in trail running performance (Genitrini et al., 2022). An athlete’s running velocity at _ VO2 max, lower body strength and leg stiffness (kleg) were identified to be adequate predictors of DR performance (Lemire et al., 2021). Kleg can be influenced by the midsole cushioning stiffness (kshoe) as shown during level running (LR) conditions by Kulmala et al. (2018). However, it remains unclear if kleg can also be influenced by altered kshoe during DR and thus positively influence DR performance.
{"title":"Effects of midsole cushioning on biomechanical and physiological performance measures in an elite ultra-trail runner: a case study","authors":"Julian Fritz, Melanie Knopp, Harry Miles, Daniel Ruiz, Aaron Martínez, T. Stoeggl, Sasa Cigoja","doi":"10.1080/19424280.2023.2199400","DOIUrl":"https://doi.org/10.1080/19424280.2023.2199400","url":null,"abstract":"With increasing popularity and due to the performance altering relevance of equipment, trail running has become of particular interest for the sporting goods industry. Research has shown that especially downhill running (DR) plays a decisive role in trail running performance (Genitrini et al., 2022). An athlete’s running velocity at _ VO2 max, lower body strength and leg stiffness (kleg) were identified to be adequate predictors of DR performance (Lemire et al., 2021). Kleg can be influenced by the midsole cushioning stiffness (kshoe) as shown during level running (LR) conditions by Kulmala et al. (2018). However, it remains unclear if kleg can also be influenced by altered kshoe during DR and thus positively influence DR performance.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S136 - S137"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47544040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2200393
D. Krumm, Laura Lippert, S. Odenwald, Daniel Potts
Mechanical power output can be used to quantify performance in order to plan and execute appropriate training programs. To measure mechanical power output during running, the dependent ground reaction forces, among others, should be recorded. Existing wearable devices for determining mechanical power during running do not measure these forces. Instead, they estimate them, for example, based on information from the GPS, inertial sensors, or other kinematic data (Cerezuela-Espejo et al., 2020). With the overall goal of determining mechanical power during running based on kinetic data, we performed long-duration measurements as a first step (Krumm, Koska, Wakode, Odenwald, & Maiwald, 2022). These measurements allow us to estimate vertical ground reaction forces based on plantar pressure. In this paper, we present the regression model developed for this purpose.
{"title":"Preliminary work on the determination of mechanical power during running based on kinetic data","authors":"D. Krumm, Laura Lippert, S. Odenwald, Daniel Potts","doi":"10.1080/19424280.2023.2200393","DOIUrl":"https://doi.org/10.1080/19424280.2023.2200393","url":null,"abstract":"Mechanical power output can be used to quantify performance in order to plan and execute appropriate training programs. To measure mechanical power output during running, the dependent ground reaction forces, among others, should be recorded. Existing wearable devices for determining mechanical power during running do not measure these forces. Instead, they estimate them, for example, based on information from the GPS, inertial sensors, or other kinematic data (Cerezuela-Espejo et al., 2020). With the overall goal of determining mechanical power during running based on kinetic data, we performed long-duration measurements as a first step (Krumm, Koska, Wakode, Odenwald, & Maiwald, 2022). These measurements allow us to estimate vertical ground reaction forces based on plantar pressure. In this paper, we present the regression model developed for this purpose.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S176 - S177"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49401774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2199298
K. Beschorner, Henry Ing, V. Chadha, Anna B. Randolph, Ky Reifler, T. Jacobs
The prevalence of falling accidents, and the variation in friction performance across shoes (Iraqi, et al., 2020) suggest an opportunity to reduce slips through improved outsole design. A salient source of friction in the presence of liquid contaminants is hysteresis friction, which occurs due to energy loss in the shoe material. This energy loss occurs from cyclic loading caused by the shoe sliding against periodic topographical features of the floor surface. Mechanics models of hysteresis friction suggest that the small-scale topography features of the floor and the high-frequency material response of the shoe are relevant to friction (Heinrich, et al., 2000).
{"title":"Shoe-floor friction is predicted by high-frequency material properties and small-scale floor topographical features","authors":"K. Beschorner, Henry Ing, V. Chadha, Anna B. Randolph, Ky Reifler, T. Jacobs","doi":"10.1080/19424280.2023.2199298","DOIUrl":"https://doi.org/10.1080/19424280.2023.2199298","url":null,"abstract":"The prevalence of falling accidents, and the variation in friction performance across shoes (Iraqi, et al., 2020) suggest an opportunity to reduce slips through improved outsole design. A salient source of friction in the presence of liquid contaminants is hysteresis friction, which occurs due to energy loss in the shoe material. This energy loss occurs from cyclic loading caused by the shoe sliding against periodic topographical features of the floor surface. Mechanics models of hysteresis friction suggest that the small-scale topography features of the floor and the high-frequency material response of the shoe are relevant to friction (Heinrich, et al., 2000).","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S82 - S83"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41850785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2199384
Hideya Okamoto, D. Kogawa, Shin Hirai, Y. Kaneko
It has been reported that comfort is an important factor in evaluating running shoes (Hoerzer et al., 2015). It has also been pointed out that there may be a relationship between runners’ running shoe preferences and running injuries (Nigg et al., 2015). However, the mechanism by which runners perceive comfort is still incompletely understood because comfort is a very abstract feeling. It is important to clarify the relationship between runners’ shoe preferences and biomechanical characteristics after accurately evaluating human running preferences.
据报道，舒适度是评价跑鞋的一个重要因素（Hoerzer等人，2015）。也有人指出，跑步者的跑鞋偏好与跑步损伤之间可能存在关系（Nigg et al.，2015）。然而，跑步者感知舒适的机制仍然不完全清楚，因为舒适是一种非常抽象的感觉。在准确评估人类跑步偏好后，澄清跑步者的鞋偏好与生物力学特征之间的关系是很重要的。
{"title":"Relationship between individual differences in runners' running shoe preferences and biomechanical characteristics","authors":"Hideya Okamoto, D. Kogawa, Shin Hirai, Y. Kaneko","doi":"10.1080/19424280.2023.2199384","DOIUrl":"https://doi.org/10.1080/19424280.2023.2199384","url":null,"abstract":"It has been reported that comfort is an important factor in evaluating running shoes (Hoerzer et al., 2015). It has also been pointed out that there may be a relationship between runners’ running shoe preferences and running injuries (Nigg et al., 2015). However, the mechanism by which runners perceive comfort is still incompletely understood because comfort is a very abstract feeling. It is important to clarify the relationship between runners’ shoe preferences and biomechanical characteristics after accurately evaluating human running preferences.","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S101 - S102"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49133317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.1080/19424280.2023.2199409
E. Farina, Rachel Wathen, Daniel Gaytan-Jenkins, Derek J. Haight, David Clark
Twenty four females of US sizes W7 W8 W9 were recruited (35.3± 7.7 yr, 65.6 ± 13.4 kg) who ran at least 2 per week. Each ran on an instrumented treadmill at her preferred pace (averaging 10:15min/mile or 2.62m/s) for three minutes in five randomized conditions. Footwear consisted of the commercial Nike: Structure 22, Pegasus 36, Infinity React, Invincible ZoomX, and Vaporfly NEXT%. A size W8 sampling defined a large range in mechanical properties under custom loading: 232N/mm down to 133N/mm in compression stiffness and 7.0Nm/rad up to 15.1Nm/rad in longitudinal bending stiffness. Pelvisdown kinematics and underfoot kinetics were collected for the last two minutes of each trial. Data were processed using V3D and python. Statistical comparisons were made using RM ANOVA with Tukey’s post-hoc (alpha 1⁄4 0.05).
{"title":"Footwear reduces and redistributes lower extremity joint work in women runners","authors":"E. Farina, Rachel Wathen, Daniel Gaytan-Jenkins, Derek J. Haight, David Clark","doi":"10.1080/19424280.2023.2199409","DOIUrl":"https://doi.org/10.1080/19424280.2023.2199409","url":null,"abstract":"Twenty four females of US sizes W7 W8 W9 were recruited (35.3± 7.7 yr, 65.6 ± 13.4 kg) who ran at least 2 per week. Each ran on an instrumented treadmill at her preferred pace (averaging 10:15min/mile or 2.62m/s) for three minutes in five randomized conditions. Footwear consisted of the commercial Nike: Structure 22, Pegasus 36, Infinity React, Invincible ZoomX, and Vaporfly NEXT%. A size W8 sampling defined a large range in mechanical properties under custom loading: 232N/mm down to 133N/mm in compression stiffness and 7.0Nm/rad up to 15.1Nm/rad in longitudinal bending stiffness. Pelvisdown kinematics and underfoot kinetics were collected for the last two minutes of each trial. Data were processed using V3D and python. Statistical comparisons were made using RM ANOVA with Tukey’s post-hoc (alpha 1⁄4 0.05).","PeriodicalId":45905,"journal":{"name":"Footwear Science","volume":"15 1","pages":"S148 - S149"},"PeriodicalIF":3.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45540868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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