Why Stronger Bodies Alone Won’t Build Lifelong Movers: New Evidence Separating Physical Fitness from Physical Literacy in Children

Table of Contents

1. Key Highlights
2. Introduction
3. How the study was designed and what was measured
4. What the results reveal: linked but distinct constructs
5. Why coordination failed to predict physical literacy as measured
6. Measurement caveats and the circularity problem
7. Practical implications for schools and public-health programs
8. Why strength shows a unique relationship with psychological confidence
9. Designing interventions that build both fitness and literacy: practical program elements
10. Measurement and research recommendations going forward
11. Policy and curriculum recommendations
12. Limitations to bear in mind
13. What this means for parents, teachers and program designers
14. FAQ

Key Highlights

• A study of 461 French primary-school children finds a substantial association between overall physical fitness and physical literacy, but fitness explains mainly the physical self-perception and only partially the psychological components of literacy.
• Strength, endurance and speed linked to children’s perceived physical competence; only strength showed a relationship with psychological confidence. Social and cognitive dimensions of physical literacy were not predicted by fitness measures.
• Effective school and public-health strategies should pair fitness development with opportunities for choice, social connection, and learning about activity to support lifelong participation.

Introduction

Physical education often reduces to timed runs, jump distances and shuttle tests. Those measures matter: they capture force, speed, endurance and control. Yet movement is also a lived experience. Children need to believe they can take part, know how activity fits into daily life, and have social environments that invite them to play and persist. That broader set of capacities—motivation, confidence, knowledge and movement competence—forms the concept of physical literacy. New research from France shows these two constructs are related but not interchangeable. Fitness correlates with how children see their movement ability, but it does little to explain whether they feel motivated, socially supported, or cognitively equipped to stay active over the long term.

This article examines the recent empirical evidence linking physical fitness and physical literacy, explains why the distinction matters for schools and public health, unpacks measurement challenges, and offers practical approaches for educators and policymakers who want children to be both fitter and more likely to remain active for life.

How the study was designed and what was measured

Researchers recruited pupils in five urban primary schools in France during autumn 2024. From 633 invited, 551 provided consent and completed parts of the protocol; the final analytic sample included 461 children aged roughly 6 to 10 years (mean age 7.92), balanced for sex. Assessments took place within regular physical-education sessions and were overseen by teachers and members of the research team.

Fitness assessment Fitness used the Diagnoform-Kid protocol, a validated battery tailored for children. Four capacities were assessed:

• Muscular power: standing long jump.
• Speed: distance run in a five-second sprint.
• Endurance: a six-minute 20-metre shuttle test alternating running and walking.
• Coordination: a hopscotch-style task testing movement sequencing and balance.

Each performance was standardized to a 20-point scale to create comparable indicators across capacities. These tests capture core performance domains—force production, rapid movement, sustained cardiorespiratory effort and basic movement control—but do not exhaust the full spectrum of physical capability.

Physical literacy assessment Physical literacy was measured using PLC-Quest, a French-adapted questionnaire that relies on 30 illustrated items where children respond along a four-point scale from “not at all like me” to “very much like me.” Items form four dimensions:

• Physical: children’s self-evaluation of their movement abilities.
• Psychological: confidence, motivation and enjoyment of activity.
• Social: interaction with peers and perceived social support for activity.
• Cognitive: understanding of activity’s purpose, health effects and how to adapt movement to different situations.

PLC-Quest has shown robust test–retest reliability in French samples. It remains a self-report instrument, so it measures perceived capacities rather than strictly objective skill.

Analytic approach The research team applied structural equation modelling (SEM) to examine relationships while accounting for measurement error. Initially, fitness and literacy were each modelled as latent, overall constructs synthesized from the four tests and four questionnaire dimensions. The researchers then decomposed the constructs to model specific paths linking each fitness capacity to each literacy dimension.

What the results reveal: linked but distinct constructs

At the latent-variable level, the association between overall fitness and overall physical literacy was substantial. The standardized coefficient was 0.52, with strong model-fit indices (Comparative Fit Index 0.948, Tucker–Lewis Index 0.924). That statistical result confirms that children who performed better on objective fitness tests generally reported higher levels of physical literacy.

Breaking the analysis into parts clarified the nature of that relationship. Fitness capacities predicted the physical dimension of literacy most consistently. Strength showed the strongest link (coefficient 0.22), followed by endurance (0.14) and speed (0.11). Coordination, as measured by the hopscotch task, did not predict the self-perceived physical dimension once the other capacities were controlled for.

Only strength among the fitness measures showed a significant association with the psychological dimension (coefficient 0.17). None of the fitness tests were significantly associated with either the social or cognitive dimensions of physical literacy.

Sex differences and robustness The global association between fitness and literacy appeared in both girls and boys. Coefficients suggested a stronger association among boys (0.49) than girls (0.30), but this difference did not reach statistical significance. The essential finding—fitness relates most to perceived physical ability and, to a lesser extent, psychological confidence—held across sexes.

Interpretation at face value Performance matters. Children who can jump farther, run faster and sustain activity longer tend to perceive themselves as more physically capable. Those capabilities likely contribute to confidence in movement and to the subjective sense that “I can do this.” Strength in particular appears to confer a psychological benefit; feeling physically strong may translate into greater confidence and willingness to attempt challenges.

However, the absence of associations with social and cognitive dimensions signals that fitness does not automatically make children socially included, informed about activity choices, or motivated to persist when challenges arise. Those aspects depend on relationships, teaching practices and opportunities to make sense of movement.

Why coordination failed to predict physical literacy as measured

Coordination did not predict children’s perceived physical competence after accounting for strength, endurance and speed. That result deserves careful interpretation.

The hopscotch test targets a specific, decontextualized form of coordination: sequencing and balance under controlled conditions. Real-world coordination during play or sport depends on adapting to changing spaces, negotiating other bodies, responding to a moving ball, and applying skills across tasks. Those context-sensitive abilities emerge through interaction with environments and peers. A single, laboratory-like hopscotch task may miss adaptive coordination—the very skill sets that support participation in games, dance, and team sports.

From an ecological standpoint, motor skills are not fixed traits; they develop through exploration of affordances—opportunities for action provided by the environment. Controlled tests can quantify aspects of motor control, but they cannot capture how well a child perceives opportunities, selects movement strategies, or collaborates under social and spatial constraints. The absence of a statistical association in this study therefore likely reflects measurement limits rather than a verdict on the role of coordination in physical literacy.

Measurement caveats and the circularity problem

The study highlights a central measurement challenge: instruments sometimes measure overlapping constructs. The PLC-Quest physical dimension asks children to rate abilities that mirror the concepts captured by the Diagnoform-Kid tests. When an objective jump distance correlates with a child’s self-reported jumping confidence, part of the relationship reflects agreement between performance and self-perception rather than a broader causal pathway.

Cross-sectional data cannot determine directionality. Fitness could drive confidence—getting faster or stronger may make children feel more capable and open doors to participation. Alternatively, children who are confident, enjoy activity, and understand its benefits might practice more and therefore develop better fitness. The processes could be reciprocal: mutual reinforcement over time. Longitudinal designs or intervention studies are necessary to untangle cause and effect.

Other measurement issues include:

• Self-report bias: Young children may misread items, respond based on social desirability, or lack the introspection to rate their skills precisely.
• Test effort: Fitness measures rely on maximal or near-maximal effort. A child’s mood, understanding of instructions, or desire to compete can alter performance.
• Task specificity: Some tests assess narrow components of capacity. A broader or more ecologically valid battery might capture different relationships.

Statistical nuance: the authors note that one detailed model was saturated, yielding perfect fit indices by construction. Perfect fit does not ensure the model represents true causal structure.

Practical implications for schools and public-health programs

Treating fitness training as the solution for sedentary childhoods misses half the problem. Building stronger, faster and more enduring bodies may increase perceived physical capability, but producing lifelong movers requires attention to social, cognitive and motivational processes.

Avoid performance-only approaches Programs that focus narrowly on rankings, timed runs and competitive outcomes risk excluding children who are less physically developed or who dislike comparison. Evidence cited by the researchers shows that some forms of fitness testing can reduce self-esteem and generate unpleasant feelings for some children. Testing that emphasizes speed and rankings without opportunities for mastery, support, and choice may discourage ongoing participation.

Embed fitness within supportive pedagogies A stronger strategy integrates fitness development with teaching that fosters confidence, social inclusion and understanding. Practical elements include:

• Choice and agency: Offer multiple activity options and opportunities for children to adapt tasks to their preferences. Choice promotes intrinsic motivation and a sense of ownership.
• Cooperative tasks: Design games that require collaboration rather than strict competition. Cooperative challenges allow children with varied abilities to contribute and experience success.
• Scaffolding and differentiated challenges: Modify tasks so children can experience progressive mastery. Use small-sided games, variable rules, and positive feedback to create competence-building experiences.
• Reflection and understanding: Include brief discussions about why activities matter, how movement affects health and mood, and how to adapt games to different settings.

Real-world classroom examples

• A primary-school PE unit pairs short fitness circuits (strength, speed, endurance drills) with team-based modification tasks. Groups design versions of common playground games that include classmates with differing abilities. After activity, children discuss how they modified rules to ensure everyone contributed.
• An after-school program uses play-based modules: stations combine simple skill drills with cooperative problem-solving challenges (e.g., move an object across a court using only certain body parts). Staff emphasize effort and creativity over performance metrics.
• A community initiative trains peer leaders—older pupils who mentor younger children in games that reward inclusion and shared goals. Peer-led formats increase social belonging and create role models for sustained participation.

Assessment reforms Assessments should measure more than distance, speed and shuttle laps. Practical changes include:

• Emphasize formative assessment that tracks individual progress and effort.
• Use ecological skill assessments that involve game-like scenarios (e.g., passing under pressure, navigating obstacles with teammates).
• Pair objective measures with structured self-reflection prompts to connect performance to confidence and strategy.
• Avoid public leaderboards that rank children against peers for fitness outcomes.

Family and community engagement Social and cognitive dimensions depend heavily on family support and the broader environment. Strategies include:

• Parent education sessions that highlight ways to create active opportunities at home without pressure.
• Community open-days where families try cooperative activities and receive simple tools for adapting games to small spaces.
• Partnerships with local clubs that emphasize inclusive entry points rather than early specialization.

Policy implications Public-health campaigns should not conflate fitness targets and literacy objectives. Policies can:

• Fund integrated programs that combine measurable fitness goals with teacher training in inclusive pedagogies.
• Encourage curricula that allocate time for play, decision-making, and learning about activity benefits alongside physical conditioning.
• Support longitudinal evaluation of school-based interventions to determine which combinations of approaches produce sustained activity into adolescence.

Why strength shows a unique relationship with psychological confidence

Among fitness components, strength was the only capacity linked to the psychological dimension of literacy. Several mechanisms may explain that finding.

Embodied agency Strength alters how children experience their bodies. Feeling strong can reduce fear of falling or getting hurt, increase willingness to initiate play, and support participation in activities that require force or physical contact. This embodied sense of agency likely feeds into confidence and motivation.

Observable progress Strength gains can be visible and easily tracked (e.g., being able to climb higher, lift heavier objects or push harder in games). Observable improvement may reinforce self-efficacy more readily than nuanced gains in coordination or small increases in endurance.

Functional relevance Many playground activities—climbing, wrestling, carrying objects—depend directly on strength. Success in those tasks can deliver immediate social rewards: peers include or praise the child, coaches recognize effort, and the child perceives themselves as competent.

Limitations to causal claims The cross-sectional study cannot prove that increasing strength will raise a child’s motivation or confidence. Children who already feel confident may engage more in strength-building play and thus become stronger. Randomized interventions that target strength specifically and measure psychological outcomes over time would clarify causality.

Designing interventions that build both fitness and literacy: practical program elements

Schools and community programs that aim for lifelong participation should combine physical conditioning with experiences that nurture motivation, social bonds, and knowledge. Concrete program elements include:

1. Multi-activity blocks with choice

• Structure lessons into short blocks where children rotate through fitness-focused stations and open-ended play stations.
• Provide options that vary intensity, skill demands and social structure so children find a match with their preferences.

2. Game-based fitness

• Embed strength, speed and endurance tasks within games rather than isolated drills. For example, relay games that require carrying objects build strength and create social interaction.

3. Skill application under realistic constraints

• Replace decontextualized coordination drills with game scenarios that require perception-action coupling, such as dynamic passing games or obstacle courses with moving “teammates” (other children or staff).

4. Peer mentoring and cooperative leadership

• Train older students or peer leaders to facilitate inclusive games. Peer-led formats can strengthen social bonds and model adaptive strategies for integrating diverse abilities.

5. Reflective learning

• After physical tasks, ask brief guided questions: What strategy worked? Who helped you today? How did you adapt when the task changed?
• Integrate simple health education that connects movement to mood, sleep, concentration and daily life.

6. Differentiated progress markers

• Replace normative benchmarks with personalized goals. Track progress in relation to one’s own baseline rather than a class-wide leaderboard.

7. Outdoor and unstructured play opportunities

• Preserve time for free play where children explore movement affordances. Unstructured play supports creativity, problem-solving and adaptive coordination.

8. Family-inclusive activities

• Organize family movement nights with cooperative games and low-cost activities that families can replicate at home.

9. Teacher training in motivational climates

• Provide educators with tools to foster mastery climates—focus on personal improvement, effort, and task variety rather than purely competitive outcomes.

10. Assessment that informs instruction

• Use assessment results to tailor instruction and to identify children who need extra support for social inclusion or for understanding how to participate.

Measurement and research recommendations going forward

The study’s authors identify several priorities for future work; these also form a practical roadmap for researchers and funders:

1. Longitudinal and intervention designs

• Studies that follow children across years can reveal directionality: does fitness drive literacy, does literacy drive fitness, or are effects reciprocal?
• Randomized controlled interventions that manipulate fitness training, literacy-focused pedagogy, or both will offer causal evidence.

2. Ecological measurement of coordination and skill

• Assessments should capture adaptability: how children perform when demands, environments and social contexts vary.
• Motion-capture or video-based coding of game performance, parent/teacher reports of real-world participation, and observational tools can supplement standardized tests.

3. Diverse populations and settings

• Replication across rural, socioeconomically varied and culturally distinct settings will test generalizability.
• Studies that include older children and adolescents will clarify developmental dynamics—do social and cognitive dimensions become more or less linked to fitness with age?

4. Mixed-methods approaches

• Qualitative inquiry—interviews, focus groups, ethnographic observations—can illuminate how children interpret fitness experiences and how social contexts shape motivation.

5. Measurement innovation

• Combine objective measures (accelerometers, performance tests) with validated child-friendly self-report tools and teacher/parent observations.
• Develop short, reliable instruments that schools can feasibly implement without creating competitive climates.

6. Trial pragmatic school interventions

• Trials that integrate teacher professional development, curriculum adjustments, and family engagement will show how scalable solutions perform under real-world constraints.

Policy and curriculum recommendations

Policy should promote balanced approaches that treat fitness as necessary but not sufficient for lifelong activity.

Curriculum design

• Incorporate physical literacy objectives explicitly alongside fitness benchmarks. Curricula should specify activities that develop social and cognitive dimensions.
• Allocate sufficient unstructured play time and ensure PE syllabi include cooperative and choice-based modules.

Assessment policy

• Discourage public ranking systems for fitness that shame or exclude students. Prioritize formative, individualized assessment.
• Provide resources for schools to administer balanced assessments that measure performance and self-perception.

Professional development

• Invest in teacher training on fostering mastery climates, inclusive pedagogy, and ways to connect activity to knowledge and motivation.
• Equip teachers with simple observation tools and scripts for reflective discussions with children.

Public-health messaging

• Frame physical activity campaigns to value participation, social connection and enjoyment as well as measurable fitness improvements.
• Support community infrastructures—safe parks, affordable clubs, inclusive programming—that make social and cognitive supports for activity accessible.

Resource allocation

• Fund programs that integrate cross-sector inputs: education, health, community sports and family services.
• Prioritize longitudinal evaluation funding to generate the evidence base for scalable interventions.

Limitations to bear in mind

The French study provides useful evidence, but findings should be interpreted cautiously given key limitations:

• Cross-sectional design prevents causal inference. Observed associations might reflect reverse causation or simultaneous mutual influences.
• Urban, country-specific sample: five urban schools in France limit generalizability to rural settings or other cultural contexts.
• Age range constrained: children were between six and ten years old. Developmental changes in adolescence may alter relationships among fitness, literacy and participation.
• Measurement gaps: the fitness battery assesses core physical capacities but not all aspects of movement adaptability. The PLC-Quest relies on self-report, which depends on child comprehension and honesty.
• Missing data: 16% of initially participating children were excluded due to incomplete fitness data. That attrition could bias results if excluded children differed systematically from those included.
• Saturated statistical model: one detailed model had no degrees of freedom, making its fit indices tautological rather than diagnostic of true structure.

These limitations point to the need for caution before translating findings into large-scale policy shifts, while still recognizing the practical guidance they offer for designing more holistic programs.

What this means for parents, teachers and program designers

Parents: Encouraging children to be active matters beyond minutes on a tracker. Support opportunities that let children choose activities, play with friends, and feel competent. Model positive attitudes toward movement; children internalize how adults frame physical activity.

Teachers: Design lessons that blend fitness development with social and cognitive learning. Use small-sided games, cooperative challenges and reflection prompts. Avoid public ranking and use formative assessment to celebrate personal progress.

Program designers: Create offerings that lower barriers to entry. Make early experiences rewarding rather than evaluative. Train staff to facilitate inclusive experiences and to scaffold challenges so all participants gain mastery.

Policymakers: Fund integrated programs and research that measure outcomes beyond performance. Encourage curricula that prioritize lifelong participation and social inclusion.

FAQ

Q: How do physical fitness and physical literacy differ? A: Physical fitness refers to measurable bodily capacities—strength, speed, endurance and coordination—usually assessed through performance tests. Physical literacy encompasses the broader set of factors that support sustained engagement in activity: children’s motivation, confidence, social supports and understanding of movement. Fitness is an outcome; literacy is a process and a mindset that enables participation.

Q: If fitness doesn’t predict social and cognitive dimensions, should schools stop fitness testing? A: No. Fitness testing provides useful information about physical capacities and health-related outcomes. The risk lies in letting testing dominate pedagogy and in using public comparisons that demotivate some children. Tests should be one component of a balanced approach that includes activities and teaching strategies to build confidence, social inclusion and knowledge.

Q: What practical steps can teachers take tomorrow? A: Introduce choice into lessons, pair fitness circuits with cooperative games, set individualized goals, use formative assessments that track improvement rather than rank students, and facilitate short reflections linking activity to health and strategy. Emphasize inclusion and scaffold tasks so every child experiences success.

Q: Why might strength be linked to psychological confidence more than other fitness measures? A: Strength often yields observable, functional successes in playground tasks and daily activities. Those successes can boost self-efficacy. Feeling physically robust helps children approach new activities without fear of failure. The cross-sectional data cannot prove causation, but the association suggests strength-building activities could support confidence when delivered in supportive contexts.

Q: Are there better ways to measure coordination for physical literacy research? A: Yes. Tasks that simulate real-game scenarios, require adaptation to dynamic conditions, or assess interaction with other people better capture coordination as it matters for participation. Video-based coding, field observations, and tasks embedded in play contexts provide more ecological validity than simple hopscotch-style tests.

Q: Does the study indicate boys benefit more from fitness for literacy than girls? A: The association between overall fitness and overall literacy appeared numerically stronger among boys, but the difference was not statistically significant. The core pattern—fitness relates mainly to perceived physical competence and less to social and cognitive dimensions—applied to both sexes.

Q: What research comes next? A: Longitudinal studies and intervention trials are needed to test whether improving fitness causes gains in physical literacy, whether literacy-focused programs raise fitness, or whether reciprocal relationships account for mutual reinforcement. Studies across diverse cultural and socioeconomic settings will clarify generalizability.

Q: How should public-health campaigns frame their messages based on this evidence? A: Campaigns should promote activity for multiple reasons—health, enjoyment, social connection—rather than solely emphasising performance metrics. Messaging that normalizes different ways of moving and highlights inclusive participation will better support lifelong activity.

Q: Can parents develop their child’s physical literacy at home? A: Yes. Encourage free play, provide varied movement opportunities, play together, and avoid creating pressure around timed or competitive tasks. Talk about how activity affects mood and health, offer choices, and model persistence and adaptability in the face of physical challenges.

Q: How might schools evaluate programs targeting both fitness and literacy? A: Use mixed-methods evaluation that combines objective fitness measures with well-validated self-report tools, teacher and parent observations, and qualitative feedback from children. Track outcomes over months or years to detect sustained changes in participation patterns.

The evidence from this French primary-school sample reframes a familiar debate. Strength, speed and endurance matter for how children perceive their bodies. That perception matters for immediate participation. But the social connections, cognitive understanding and psychological motivation that anchor lifelong activity rarely arise from fitness training alone. Designing programs that build bodies while also building confidence, knowledge and social belonging offers the best path toward children who not only move well today, but keep moving throughout their lives.