Cognitive Connie
Förstå motorisk utveckling under adolescensen
Adolescensen (11–18 år) medför djupgående biologiska förändringar som omformar det motoriska systemet. Pubertetens tillväxtskjut — som sker ungefär mellan 10–13 år hos flickor och 11–14 år hos pojkar — förändrar snabbt kroppsproportioner, lemmarnas längd och muskelmassa på sätt som tillfälligt stör de välövade perceptuella-motoriska kalibreringarna från mellanbarnsåren. Många ungdomar upplever en period av ökad klumpighet eller nedsatt koordination i tidig pubertet, ibland kallad "adolescent awkwardness" eller tillväxtklumpighet, när det motoriska systemet omkalibrerar till en snabbt föränderlig kropp.
Nyckelpersoner
Anders Ericsson
1947–2020Deliberate practice framework: argued that expertise in any domain, including sport and music, requires approximately 10,000 hours of focused deliberate practice. Later criticised for underestimating the role of early play and genetic influences, but his framework reshaped understanding of elite skill acquisition.
Jean Côté
1963–Developmental Model of Sport Participation (DMSP): the sampling years (6–12), specialising years (13–15), and investment years (16+) framework, supported by extensive retrospective studies of elite athletes, which challenged the early-specialisation model.
Nyckelbegrepp
Growth clumsiness
The transient reduction in coordination that many adolescents experience during the peak of the pubertal growth spurt, as rapid changes in limb length and body proportions disrupt established perceptual-motor calibrations. The motor system must effectively re-learn the spatial properties of the changed body. In most individuals this resolves within months as growth velocity slows; persistent clumsiness beyond the growth spurt warrants assessment.
Sex differences in motor performance
By mid-to-late adolescence, males substantially outperform females on tasks requiring strength, speed, and power, driven by testosterone-induced increases in muscle mass and bone density. Females show advantages or parity in tasks requiring fine motor control, balance, and flexibility. These are population-level differences with substantial individual overlap and large within-sex variation.
Physical activity decline
A robust epidemiological finding that moderate-to-vigorous physical activity declines across adolescence, with the sharpest decline typically in girls and in early-to-mid adolescence. Associated with psychosocial (body image, peer norms), structural (competitive sport exclusion), and developmental (sedentary demands) factors. Motor skill competence is one of the strongest predictors of whether an individual remains physically active through adolescence.
Early vs. late specialisation
Early specialisation (focusing on one sport before age 12–14) is associated with higher rates of overuse injury, burnout, dropout, and, paradoxically, lower rates of elite attainment. Late specialisation, preceded by an early sampling phase involving multiple sports, produces more elite athletes and better lifelong physical activity. Roger Federer (tennis), Wayne Gretzky (hockey), and most elite endurance athletes specialised relatively late after broad early sampling.
Deliberate play vs. deliberate practice
Deliberate play is unstructured, intrinsically motivated physical activity where children freely explore movement (street football, backyard games). Deliberate practice is organised, purposeful training focused on improving specific skills. Both are important across adolescence: deliberate play builds broad motor foundations and intrinsic motivation; deliberate practice refines domain-specific skills. Ericsson's emphasis on deliberate practice has been critiqued for undervaluing the role of deliberate play, particularly in sport.
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Källor
Senast granskad augusti 2025- 1.
Malina, R. M., Bouchard, C., & Bar-Or, O. (2004). Growth, Maturation, and Physical Activity (2nd ed.). Human Kinetics.
+Om den här källan
Comprehensive reference on biological development and physical activity across childhood and adolescence.
- 2.
Côté, J., Baker, J., & Abernethy, B. (2007). Practice and play in the development of sport expertise. In R. Eklund & G. Tenenbaum (Eds.), Handbook of Sport Psychology (3rd ed., pp. 184–202). Wiley.
+Om den här källan
Presentation of the Developmental Model of Sport Participation with evidence on early sampling vs. specialisation.