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Jorge Mota, Rute Santos, Manuel João Coelho-e-Silva, Armando M. Raimundo and Luís B. Sardinha

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Jorge Mota, Rute M. Santos, Pedro Silva, Luisa Aires, Clarice Martins and Susana Vale

Background:

The main goal of this study was to analyze the associations between cardiorespiratory fitness (CRF) and body mass index (BMI) with self-rated health (SRH) of adolescent girls.

Methods:

This was a cross-sectional study of 533 adolescents girls, aged from 10 to 18 years old. CRF was predicted by maximal multistage 20-m shuttle-run test according to procedures described from FITNESSGRAM. Girls’ obesity status was classified according to International Obesity Task Force and Self-rated health (SRH) was assessed by questionnaire.

Results:

The findings showed that among adolescent girls 23.2% had negative SRH. Girls who were classified as unfit were more likely to report negative SRH in both univariate logistic (OR: 3.05; CI: 1.91−4.87; P < .05) and multivariate (OR: 2.93; CI: 1.82−4.72; P < .05) regression analyses compared with their fit peers. Obese girls were more likely to report negative SRH (OR: 2.30; CI: 1.14−4.62; P < .05) compared with their normal-weight counterparts. However such association was lost in multivariate analyses suggesting an effect of CRF.

Conclusions:

Negative perception of health was associated with lower CRF and weight status although such association it is mediated by CRF condition.

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Elisa A. Marques, Fátima Baptista, Rute Santos, Susana Vale, Diana A. Santos, Analiza M. Silva, Jorge Mota and Luís B. Sardinha

This cross-sectional study was designed to develop normative functional fitness standards for the Portuguese older adults, to analyze age and gender patterns of decline, to compare the fitness level of Portuguese older adults with that of older adults in other countries, and to evaluate the fitness level of Portuguese older adults relative to recently published criterion fitness standards associated with maintaining physical independence. A sample of 4,712 independent-living older adults, age 65–103 yr, was evaluated using the Senior Fitness Test battery. Age-group normative fitness scores are reported for the 10th, 25th, 50th, 75th, and 90th percentiles. Results indicate that both women and men experience age-related losses in all components of functional fitness, with their rate of decline being greater than that observed in other populations, a trend which may cause Portuguese older adults to be at greater risk for loss of independence in later years. These newly established normative standards make it possible to assess individual fitness level and provide a basis for implementing population-wide health strategies to counteract early loss of independence.

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Aristides M. Machado-Rodrigues, Manuel J. Coelho e Silva, Jorge Mota, Rute Marina Santos, Sean P. Cumming and Robert M. Malina

Background:

Sport has high social valence and is a primary context for physical activity for the majority of youth. The aim of this study was to estimate the contribution of participation in organized sport to the total daily energy expenditure and also to its moderate-to-vigorous portion in male adolescents.

Methods:

The sample comprised 165 Portuguese male youth, aged 13 to 16 years. Physical activity was assessed with a multi-method approach (Actigraph GT1M accelerometer plus 3-day diary record). Differences in the intensities of physical activity and sedentary behavior of male sport participants and nonsport participants were compared using independent sample t-test.

Results:

Male participants in organized sports spent significantly more time in moderate-to-vigorous activities than nonparticipants, although the P-value for the 15 to 16 years age-group was marginal (P = .08) on the weekend days. In addition, male adolescents spent 11% to 13% of total daily energy expenditure in organized sports which corresponded to 35% to 42% of the moderate-to-vigorous portion of daily energy expenditure.

Conclusion:

Organized sport appears to be a relevant component of daily activity energy expenditure to promote healthy lifestyles among male adolescents.