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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Inspect source passages
Does implicit throwing practice survive fatigue?
These passages occur verbatim in the stored paper text. They support the points listed below; they do not verify every statement in the explanation.
32 participants were equally divided into explicit and implicit groups.
Thirty-two participants, equally divided between the explicit and implicit learning groups, participated in a throwing task.
Acquisition comprised 150 throws from five distances.
The initial session referred to as the acquisition phase, comprised 150 throws from five different distances.
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.
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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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