In lieu of an abstract, here is a brief excerpt of the content:Ōmori Shōzō and Kotodama Theory: How Can We Overcome the Need for Bodily Encounters?Maki SatoIntroductionŌmori Shōzō is known for his theory of tachi-araware monism. Tachiaraware monism is his attempted counter-argument to the Cartesian dualism of the object–subject divide, or in his words, a divide between physical (butsuri, mono, science, object) and non-physical consciousness (ishiki, koto, perception, incident), perception (chikaku, 知覚) and conception (shikō, 思考). His concept of Kasane-egaki is (...) also often cited as a core concept of his theory of time.1 The main aim of this paper is to first overview the works of Ōmori since there is only a limited amount of his translated work so far.2 Consecutively, the paper focuses on Ōmori’s theory of kotodama and its related arguments with an intention to expand his concept of Kowaburi into the ethics of online encounters during the pandemic.The world in 2020 was suddenly forced to face the pandemic caused by COVID-19. What COVID-19 alerted us to is tremendous, and there are countless problems that the invisible virus has revealed. Among those are the hidden problems of contemporary society, not limited to the discrimination among races, gender, and jobs (white-collars versus essential workers), the problem of zoonosis, and the related environmental problems (climate change and intrusion into wild nature) caused by over-exploitation of nature. In developed countries, most students and those serving as intellectual workers face their daily lives being overly occupied with online lectures and meetings. COVID-19 worked to normalize remote work, which further normalized and forced our everyday life to shift to cyberspace. [End Page 101]In introducing and overviewing Ōmori’s philosophy, this paper attempts to see the current situation through Ōmori’s philosophy to draw out some ethical implications related to non-physical online encounters and how we can perceive human interactions and relationships under such conditions. Under the constraints caused by COVID-19, humans’ limitless desires to interact with others are expanding more so to the sphere of cyberspace, leading to technological development, such as VR. In short, first, the paper overviews Ōmori’s philosophy. Second, through the overview of Ōmori’s philosophy, the paper seeks adaptable philosophy of his that may work as soft binding grounding ethics for cyberspace encounters where substantial bodily encounters are void. In doing so, the paper intends to draw out weak binding ethics implied in Ōmori’s philosophy that may work to empathetically engage with others in cyberspace where embodied encounters with others are dissolved.Ōmori Shōzō and His Philosophy: A Short Introduction and OverviewIn his short essay introducing the Japanese philosophy of the 1970s, Yasuo Kobayashi coined the term “Komaba quartet” by selecting four active eminent philosophers based on the Komaba campus at the University of Tokyo.3 Among them is Ōmori Shōzō (1921–97), aligning with Hiromatsu Wataru (1933–94), Sakabe Megumi (1936–2009), and Inoue Tadashi (1926–2014). Ōmori is the oldest of the Komaba quartet and received higher education before World War II. He served at the Naval Technology Institute Mitaka Laboratory during the war with his physics degree from the Tokyo Imperial University.4 After the war, he studied philosophy at the University of Tokyo with an interest in phenomenology, leading him to study at Harvard and Stanford in the United States.During his professorship at the University of Tokyo, he inspired countless students who are now leading the philosophy academy in Japan, such as Noe Keiichi (1949–) and Noya Shigeki (1954–). In the round-table discussion titled “Explanatory Round-Table on the Charm of Ōmori’s Philosophy,” four of his former students—Iida Takashi and Tanji Nobuharu, in addition to Noe and Noya—worked on selecting his works. It is impressive to read that all four [End Page 102] of them recall how exciting and inspiring it was to take his classes.5 Iida recalls that Ōmori’s classes were exceptional since philosophy courses were all about reading, with might and main, the texts written in a language other than Japanese at the University of Tokyo. However, Ōmori, with his postwar American education, welcomed discussion with the students and was keen on questioning... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Guest Editor’s Concluding RemarksMaki SATO 本特別号は戦前・戦後の東京、特に東京帝国大学、東京大学を活躍の場に据えた哲学者たちの智の営みに光をあて特集した初の試みである。「東京学派」との掛け声に対して、いったいどれくらいの論文が集まるのだろうか 、蓋を開けてみるまでは全く分からなかった。特別号編者の一人としては、東京という場で行われた様々な哲学者たちによる知的営みのうち、いつの時代の、どの哲学者が研究対 象となっているのかを知ることは大変興味深かった。巻頭論文としては、『日本哲学小史(Engaging Japanese Philosophy: A Short History)』を上梓されたオハイオ州立大学名誉教授のトマス・カスリス先生に、2019年1月下旬に東京大学東洋文化研究所にて行われた国際ワークショップ「日本哲学と東京大学の哲学」、また同年11月下旬 に東京大学本郷キャンパスにおいて開催された集中講義でお話しいただいた内容に基づき、基調論文を執筆いただいた。快くお引き受け下さったことに、ここに心から感謝の意 を示したい。 今回、収録した論文が取り上げていたのは、井上哲次郎(1856~1944)、清沢満之(1863~1903)、桑木厳翼(1874~1946)、大森荘蔵(1921~1997)である。西周(1829~1897 )がphilosophyを「希哲学」と翻訳してから、新たな学問として日本に哲学が根付き、西洋哲学の解釈から日本独自の哲学へと花開き始めた頃の哲学者が主に取り上げられている。東京の哲学者たちの知的営みの 多くは「京都学派」と比較すると忘却され、埋もれてしまった概念が他にも多々あるだろう。しかしながら、東京という場所において、彼ら哲学者たちが掴もうとしていた新たな概念は、常に確実に日本の中枢、政治や経済 のダイナミックな動向への応答としてあったものである。今後、日本哲学を通して私たち人類の行く先を見据える上でも、東京という場所において活躍した過去の哲学者たちが、言葉や概念で掴もうとしていたものを、本特 集号が、再度、取り上げて見直す一機会にな れば幸いである。 [End Page 125]This special issue is the first attempt to highlight the intellectual activities of philosophers who were active in prewar and post-war Tokyo, particularly at the Tokyo Imperial University and the University of Tokyo. I had no idea how many papers we would receive under the special issue “Tokyo School” until we closed (...) our call for papers. As one of the editors of the special issue, it was exciting to know, among the intellectual activities conducted by various philosophers based in Tokyo, which philosophers were the subjects of contemporary research from which period. It is fascinating to see and to read how the philosophical thinking of the past may resonate and still keep on inspiring us to face humanity’s issues of the twenty-first century.For the opening article, we invited Professor Emeritus Thomas P. Kasulis of Ohio State University, who published Engaging Japanese Philosophy: A Short History back in 2018, to write a keynote paper. He kindly sent us an article based on his presentations at the international workshop “Japanese Philosophy and the Philosophy of the University of Tokyo” held in late January 2019 at the University of Tokyo’s Institute for Advanced Studies on Asia and during an intensive lecture held in late November 2019 at the Hongo Campus. I would like to express our sincere gratitude to him for contributing to this special issue.The papers included in this volume cover Inoue Tetsujiro (1856–1944), Kiyosawa Manshi (1863–1903), Kuwaki Genyoku (1874–1946), and Omori Shozo (1921–97). The focus of this volume is on philosophers from the period when philosophy took root in Japan as a new discipline after Nishi Amane (1829–97) translated the word “philosophy” as tetsugaku. The late nineteenth to the early twentieth century was a transition period when philosophical thoughts began to blossom from an interpretation of Western philosophy into a unique style of Japanese philosophy, which I see as an attempt at amalgamation to close the gap between West and East.Compared to the well-studied Kyoto School centered around Nishida, from the Tokyo School there are probably many other concepts that have been forgotten and buried. The new concepts that philosophers of Tokyo were trying to grasp were always a response to the significant trends of the time, including responses to the dynamism of Japan’s political and economic situation, Tokyo being the capital of Japan. We hope that this special issue will provide [End Page 126] an opportunity to take a fresh look at and discover what the philosophers active in Tokyo were trying to grasp through words and concepts that still engage well with universal questions that remain relevant to the humanity of the current time. [End Page 127]Copyright © 2023 State University of New York Press... (shrink)

We can easily discriminate self-produced from externally generated sensory signals. Recent studies suggest that the prediction of the sensory consequences of one’s own actions made by forward model can be used to attenuate the sensory effects of self-produced movements, thereby enabling a differentiation of the self-produced sensation from the externally generated one. The present study showed that attenuation of sensation occurred both when participants themselves performed a goal-directed action and when they observed experimenter performing the same action, although they clearly (...) reported that the tones were produced by other during action observation and by themselves during their own action. These results suggest that sensory prediction of action modulates ongoing auditory processing irrespective of who produces the sounds and that the explicit judgment of agency does not necessarily rely on the same mechanisms on which implicit perceptual measures such as sensory attenuation rely. (shrink)

The number of competing-brands changes by new product's entry. The new product introduction is endemic among consumer packaged goods firm and is an integral component of their marketing strategy. As a new product's entry affects markets, there is a pressing need to develop market response model that can adapt to such changes. In this paper, we develop a dynamic model that capture the underlying evolution of the buying behavior associated with the new product. This extends an application of a dynamic (...) linear model, which is used by a number of time series analyses, by allowing the observed dimension to change at some point in time. Our model copes with a problem that dynamic environments entail: changes in parameter over time and changes in the observed dimension. We formulate the model with framework of a state space model. We realize an estimation of the model using modified Kalman filter/fixed interval smoother. We find that new product's entry (1) decreases brand differentiation for existing brands, as indicated by decreasing difference between cross-price elasticities; (2) decreases commodity power for existing brands, as indicated by decreasing trend; and (3) decreases the effect of discount for existing brands, as indicated by a decrease in the magnitude of own-brand price elasticities. The proposed framework is directly applicable to other fields in which the observed dimension might be change, such as economic, bioinformatics, and so forth. (shrink)

Crew Pairing is one of the most important and difficult problems for airline companies. Nets to fuel costs, the crew costs constitute the largest cost of airlines, and the crew costs depend on the quality of the solution to the pairing problem. Conventional systems have been used to solve a daily model, which handles only regular flights with many simplifications, so a lot of corrections are needed to get a feasible solution and the quality of the solution is not so (...) high. A fully dated model, which handles regular flights and irregular flights simultaneously, is extremely hard and has not been solved directly hitherto. The number of irregular flights tend to increase in Europe and Japan, hence the resolution of the practical fully dated pairing system is desired. This paper presents a new approach which solves directly the fully dated crew pairing by Genetic Algorithms. GA is improved with stochastic processes to attack the fully dated model, and many heuristics are included in the decoding mecanism of the GA. For several hundred flights per day for fully dated 2 months scheduling period, the system found better or equivalent solutions to the human scheduler’s without any simplification from 5 to 20 times faster. (shrink)

Schedule planning is one of the most crucial issues for any airline company, because the profit of the company directly depends on the efficiency of the schedule. This paper presents a novel scheduling method which solves problems related to time scheduling, fleet assignment and maintenance routing simultaneously by Genetic Algorithms. Every schedule constraint is embeded in the fitness function, which is described as an object oriented model and works as a simulater developing itself over time, and whose solution is executable (...) without human correction. The schedular is able to solve the problems involving several hundred flights in a few hours, and the solutions are superior or equivalent to those by human experts in terms of the estimated profit. (shrink)

We highlight that the connection of well-foundedness and recursive definitions is more than just convenience. While the consequences of making well-foundedness a sufficient condition for the existence of hierarchies have been extensively studied, we point out that well-foundedness is a necessary condition for the existence of hierarchies e.g. that even in an intuitionistic setting α⊢wfwhereα\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${_\alpha \vdash \mathsf{wf}\, {\rm where}\, _\alpha}$$\end{document} stands for the iteration of Π10\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} (...) \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\Pi^0_1}$$\end{document} comprehension along some ordinal α\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\alpha}$$\end{document} and wf\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathsf{wf}}$$\end{document} stands for the well-foundedness of α\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\alpha}$$\end{document}. (shrink)

... because the thing-in-itself has no abnormality. Anything unusual will appear, after I myself see it: Abnormality belongs not to the thing-in-itself, but to myself. Kuo P'u (276-324), Shan-hai ching (Scriptures of the Mountains and the Seas).

We introduce a new axiom called inductive dichotomy, a weak variant of the axiom of inductive definition, and analyze the relationships with other variants of inductive definition and with related axioms, in the general second order framework, including second order arithmetic, second order set theory and higher order arithmetic. By applying these results to the investigations on the determinacy axioms, we show the following. (i) Clopen determinacy is consistency-wise strictly weaker than open determinacy in these frameworks, except second order arithmetic; (...) this is an enhancement of Schweber–Hachtman separation of open and clopen determinacy into the consistency-wise separation. (ii) Hausdorff–Kuratowski hierarchy of differences of opens is faithfully reflected by the hierarchy of consistency strengths of corresponding parameter-free determinacies in the aforementioned frameworks; this result is valid also in second order arithmetic only except clopen determinacy. (shrink)

This article reports that some robustness of the notions of predicativity and of autonomous progression is broken down if as the given infinite total entity we choose some mathematical entities other than the traditionalω. Namely, the equivalence between normal transfinite recursion scheme and newdependent transfinite recursionscheme, which does hold in the context of subsystems of second order number theory, does not hold in the context of subsystems of second order set theory where the universeVof sets is treated as the given (...) totality. (shrink)

We introduce a new simple way of defining the forcing method that works well in the usual setting under FA, the Foundation Axiom, and moreover works even under Aczel's AFA, the Anti-Foundation Axiom. This new way allows us to have an intuition about what happens in defining the forcing relation. The main tool is H. Friedman's method of defining the extensional membership relation ∈ by means of the intensional membership relation ε .Analogously to the usual forcing and the usual generic (...) extension for FA-models, we can justify the existence of generic filters and can obtain the Forcing Theorem and the Minimal Model Theorem with some modifications. These results are on the line of works to investigate whether model theory for AFA-set theory can be developed in a similar way to that for FA-set theory.Aczel pointed out that the quotient of transition systems by the largest bisimulation and transition relations have the essentially same theory as the set theory with AFA. Therefore, we could hope that, by using our new method, some open problems about transition systems turn out to be consistent or independent. (shrink)

We investigate which part of Brouwer’s Intuitionistic Mathematics is finitistically justifiable or guaranteed in Hilbert’s Finitism, in the same way as similar investigations on Classical Mathematics already done quite extensively in proof theory and reverse mathematics. While we already knew a contrast from the classical situation concerning the continuity principle, more contrasts turn out: we show that several principles are finitistically justifiable or guaranteed which are classically not. Among them are: fan theorem for decidable fans but arbitrary bars; continuity principle (...) and the axiom of choice both for arbitrary formulae; and $\Sigma _2$ induction and dependent choice. We also show that Markov’s principle MP does not change this situation; that neither does lesser limited principle of omniscience LLPO ; but that limited principle of omniscience LPO makes the situation completely classical. (shrink)

A standard methodology in philosophy of language is to use intuitions as evidence. Machery, Mallon, Nichols, and Stich challenged this methodology with respect to theories of reference by presenting empirical evidence that intuitions about one prominent example from the literature on the reference of proper names vary between Westerners and East Asians. In response, Sytsma and Livengood conducted experiments to show that the questions Machery and colleagues asked participants in their study were ambiguous, and that this ambiguity affected the responses (...) given by Westerners. Sytsma and Livengood took their results to cast doubt on the claim that the current evidence indicates that there is cross-cultural variation in intuitions about the Gödel case. In this paper we report on a new cross-cultural study showing that variation in intuitions remains even after controlling for the ambiguity noted by Sytsma and Livengood. (shrink)

This study examined how different components of working memory are involved in the acquisition of egocentric and allocentric survey knowledge by people with a good and poor sense of direction (SOD). We employed a dual-task method and asked participants to learn routes from videos with verbal, visual, and spatial interference tasks and without any interference. Results showed that people with a good SOD encoded and integrated knowledge about landmarks and routes into egocentric survey knowledge in verbal and spatial working memory, (...) which is then transformed into allocentric survey knowledge with the support of all three components, distances being processed in verbal and spatial working memory and directions in visual and spatial working memory. In contrast, people with a poor SOD relied on verbal working memory and lacked spatial processing, thus failing to acquire accurate survey knowledge. Based on the results, a possible model for explaining individual differences in spatial knowledge acquisition is proposed. (shrink)

We study filters in residuated structures that are associated with congruence relations (which we call -filters), and develop a semantical theory for general substructural logics based on the notion of primeness for those filters. We first generalize Stone’s sheaf representation theorem to general substructural logics and then define the primeness of -filters as being “points” (or stalkers) of the space, the spectrum, on which the representing sheaf is defined. Prime FL-filters will turn out to coincide with truth sets under various (...) well known semantics for certain substructural logics. We also investigate which structural rules are needed to interpret each connective in terms of prime -filters in the same way as in Kripke or Routley-Meyer semantics. We may consider that the set of the structural rules that each connective needs in this sense reflects the difficulty of giving the meaning of the connective. A surprising discovery is that connectives , ⅋ of linear logic are linearly ordered in terms of the difficulty in this sense. (shrink)

Following the finitist’s rejection of the complete totality of the natural numbers, a finitist language allows only propositional connectives and bounded quantifiers in the formula-construction but not unbounded quantifiers. This is opposed to the currently standard framework, a first-order language. We conduct axiomatic studies on the notion of truth in the framework of finitist arithmetic in which at least smash function $\#$ is available. We propose finitist variants of Tarski ramified truth theories up to rank $\omega $, of Kripke–Feferman truth (...) theory and of Friedman–Sheard truth theory, and show that all of these have the same strength as the finitist arithmetic of one higher level along Grzegorczyk hierarchy. On the other hand, we also show that adding Burgess-style groundedness schema, adjusted to the finitist setting, makes Kripke–Feferman truth theory as strong as primitive recursive arithmetic. Meanwhile, we obtain some basic results on finitist theories of (full and hat) inductive definitions and on the second order axiom of hat inductive definitions for positive operators. (shrink)

In this paper, we use motion tracking technology to document the birth of a brand new language: Nicaraguan Sign Language. Languages are dynamic entities that undergo change and growth through use, transmission, and learning, but the earliest stages of this process are generally difficult to observe as most languages have been used and passed down for many generations. Here, we observe a rare case of language emergence: the earliest stages of the new sign language in Nicaragua. By comparing the signing (...) of the oldest and youngest signers of Nicaraguan Sign Language, we can track how the language itself is changing. Using motion tracking technology, we document a decrease in the size of articulatory space of Nicaraguan Sign Language signers over time. The reduction in articulatory space in Nicaraguan Sign appears to be the joint product of several decades of use and repeated transmission of this new language. (shrink)

There is growing evidence that individuals with social anxiety show impaired cortisol recovery after experiencing social evaluative stressors. Yet, little is known regarding the cognitive processes underlying such impaired cortisol recovery. The present study examined the effect of post-event processing (PEP), referred to as repetitive thinking about social situations, on cortisol recovery following a social stressor. Forty-two non-clinical university students (23 women, 19 men, mean age = 22.0 ± 2.0 years) completed the Trier Social Stress Test (TSST), followed by a (...) thought sampling procedure which assessed the frequency of PEP reflecting the TSST. A growth curve model showed PEP and social anxiety interactively predicted cortisol recovery. In particular, PEP predicted impaired cortisol recovery in those with low levels of social anxiety but not in those with high levels of social anxiety, which contradicted the initial hypothesis. These findings suggest that PEP is differentially associated with cortisol recovery depending on levels of social anxiety. The possible mechanisms underlying these findings were discussed in terms of protective inhibition framework. (shrink)

The plasmodium of _Physarum polycephalum_ is a unicellular and multinuclear giant amoeba with computational abilities. The plasmodium has been widely used as a model organism in the field of bio-computing; however, its ability to perform computation related to its biological nature itself in the essential sense has not yet been fully realized. Therefore, in this study, we focused on the phenomenon in which a plasmodium trapped in a closed space surrounded by repellent substances escapes from the field by changing its (...) own behavior rules. We demonstrated that this phenomenon is bio-computationally important in that it may enable the implementation of biological characteristics in computing. (shrink)

Sustained peripheral somatosensory stimulations, such as high-frequency repetitive somatosensory stimulation (HF-RSS) and vibrated stimulation, are effective in altering the balance between excitation and inhibition in the somatosensory cortex (S1) and motor cortex (M1). A recent study reported that whole-hand water flow (WF) stimulation induced neural disinhibition in the M1. Based on previous results, we hypothesized that whole-hand WF stimulation would lead to neural disinhibition in the S1 because there is a strong neural connection between M1 and S1 and aimed to (...) examine whether whole-hand WF stimulation would change the neural balance between excitation and inhibition in the S1. Nineteen healthy volunteers were studied by measuring excitation and inhibition in the S1 before and after each of the four 15-min interventions. The excitation and inhibition in the S1 were assessed using somatosensory evoked potentials (SEPs) and paired-pulse inhibition (PPI) induced by single- and paired-pulse stimulations, respectively. The four interventions were as follows: control, whole-hand water immersion, whole-hand WF, and HF-RSS. The results showed no significant changes in SEPs and PPI following any intervention. However, changes in PPI with an interstimulus interval (ISI) of 30 ms were significantly correlated with the baseline value before whole-hand WF. Thus, the present findings indicated that the whole-hand WF stimulation had a greater decreased neural inhibition in participants with higher neural inhibition in the S1 at baseline. Considering previous results on M1, the present results possibly show that S1 has lower plasticity than M1 and that the duration (15 min) of each intervention may not have been enough to alter the balance of excitation and inhibition in the S1. (shrink)

Sato, Masayuki, and Paul van Els. "Xunzi: de persoon en zijn werk" (Xunzi: The Person and His Work). In Hemel en Aarde verenigen zich door rituelen: een bloemlezing uit het werk van de Chinese wijsgeer Xunzi, edited by Carine Defoort and Nicolas Standaert, 15–22. Kapellen: Uitgeverij Pelckmans, 2003.

We propose an idea called ``ontology reuse'' to develop ontology (or taxonomy) for information search more easily by its development cost reduction. For its feasibility demonstration, we developed a prototype system that converts taxonomy information of web contents to RDF format, collects it into a server and visualizes taxonomy infomation as a 2D map for editing itself and searching information. And our goal is to realize ``ontology circulation'', which means that ontology information flows freely and easily over the Internet and (...) an intranet. (shrink)

IntroductionThe pelvic floor muscles are active during motor tasks that increase intra-abdominal pressure, but little is known about how the PFM respond to dynamic activities, such as gait. The purpose of this study was to characterize and compare PFM activity during walking and jogging in continent adults across the entire gait cycle.Methods17 able-bodied individuals with no history of incontinence participated in this study. We recorded electromyography from the abdominal muscles, gluteus maximus, and PFM while participants performed attempted maximum voluntary contractions (...) of all muscles and completed 60–70 strides in four gait conditions: slow walk ; regular walk ; transition walk ; jog. We quantified activity throughout the whole gait cycle and during periods of bursting for each participant, and analyzed the timing of PFM bursting periods to explore when the PFM were most active in the gait cycle. We also conducted a phase metric analysis on the PFM and GM burst timings. We performed a Spearman's rank-order correlation to examine the effect of speed on %aMVCGC, %aMVCBR, and phase metric score, and used the Wilcoxon Signed-Rank test to evaluate the effect of gait modality, matched for speed, on these variables.ResultsThe PFM were active throughout the gait cycle, with bursts typically occurring during single-leg support. The PFM and GM were in phase for 44–69% of the gait cycle, depending on condition. There was a positive correlation between gait speed and both %aMVCGC and %aMVCBR. Phase metric scores were significantly higher during jogging than transition walking, but there was no difference between gait modality on %aMVCGC or %aMVCBR. Where possible we disaggregated data by sex, although were unable to make statistical comparisons due to low sample sizes.ConclusionThe PFM are active during walking and jogging, with greater activity at faster speeds and with bursts in activity around single-leg support. The PFM and GM co-activate during gait, but are not completely in phase with each other. (shrink)