Does implicit throwing practice survive fatigue?
In 32 people, implicit (errorless, near-to-far) throwing practice beat explicit (errorful, far-to-near) practice under both Stroop mental fatigue and isometric physical fatigue.
Source
Implicit and explicit learning strategies and fatigue: an evaluation of throwing task performance
Study at a glance
- Design
- Human experiment — Two-group throwing-task experiment: implicit (errorless) vs explicit (errorful) learning, then retention/transfer under physical and mental fatigue
- N
- N=32 · 32 participants equally divided into implicit and explicit learning groups (16 each)
- Population
- Healthy participants performing a dart-like throwing skill-acquisition protocol
- Outcome
- Throwing performance during acquisition, retention, and transfer under mental (Stroop) and physical (50% MVC elbow) fatigue
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What they did
Split 32 participants into explicit vs implicit throwing groups (150 throws from five distances). Explicit started far and moved closer (errorful); implicit started close and moved out (errorless). Later tests included retention plus transfer under 30-min Stroop fatigue and 2-min 50% MVC elbow-extension fatigue.
What they found
Implicit learners showed better performance under fatigue and significantly outperformed explicit learners regardless of fatigue type. Acquisition analyses found a group main effect on throwing scores (F1,30=18.968, p<0.001, η²=0.387).
The limits
What it doesn't show
A 32-person lab throwing task does not prove implicit methods win for all sports, jobs, or clinical rehab under real-world fatigue.
Key terms
- Implicit (errorless) learning
- Skill practice that limits errors (here, starting close to the target).
- Explicit (errorful) learning
- Practice that invites errors and conscious rules (here, starting far away).
- Mental fatigue
- Induced with a 30-minute color-word Stroop task.
- Physical fatigue
- 50% MVC isometric elbow extension held for 2 minutes.
- Transfer test
- Performance test under new fatigue conditions after acquisition.
Flashcards
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Sample size:
Common questions
How many participants?
32, split equally into implicit and explicit groups.
How was acquisition structured?
150 throws from five distances.
How was mental fatigue induced?
30-minute color-word Stroop task.
Who performed better under fatigue?
The implicit (errorless) group.
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