Japanese Dietary Protein Allowance is Sufficient for Moderate Physical Exercise in Young Men.

Kido, Yasutoshi; Tsukahara, Takayoshi; Rokutan, Kazuhito; Shizuka, Fujiko; Ohnaka, Masaharu; Kishi, Kazushi

doi:10.3177/jnsv.43.59

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…Extreme exercise could cause excessive increase of free radicals and disturbance of intracellular prooxidant‐antioxidant homeostasis and thus damage to biomolecules may occur 44, 45, 46, 47, 48. However, moderate exercise does not cause oxidative damage to healthy subjects 49. The decreased antioxidant defense capacity with aging can be partly compensated by exercise 50.…”

Section: Discussionmentioning

confidence: 99%

Physical activity and the risk of ovarian cancer: A case‐control study in Canada

Pan¹,

Ugnat²,

Mao³

2005

Intl Journal of Cancer

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We evaluated the impact of recreational and occupational physical activity on ovarian cancer risk using data from a population-based case-control study of 442 cases with histologically confirmed incident ovarian cancer and 2,135 controls aged 20-76 years, conducted in 1994-1997 in Canada. Frequency and intensity of physical activity were collected through self-administered questionnaires. Compared to women in the lowest tertiles of moderate, vigorous and total recreational activity, those in the highest tertiles had multivariable-adjusted odds ratios (and 95% confidence intervals) of 0.67 (0.50-0.88), 0.93 (0.70-1.24) and 0.73 (0.58-0.98), respectively. There were statistically significant trends of decreasing risk with increasing levels of moderate and total recreational activity, with similar patterns for premenopausal and postmenopausal women. A significant reduction in risk associated with higher level of moderate recreational activity was observed for serous, endometrioid and other but not mucinous types of tumors. The analyses in one province with the largest number of cases and controls indicated that occupational activity was associated with reduced ovarian cancer risk by lifetime activity and by various life periods (early 20s, early 30s, early 50s and 2 years before interview). Our study suggests that occupational and regular moderate recreational physical activity reduce ovarian cancer risk. ' 2005 Wiley-Liss, Inc.Key words: case-control studies; exercise; ovarian neoplasms; occupation; recreation Although the evidence for a protective effect of physical activity on colon and breast cancer is convincing, the evidence for an inverse association between physical activity and ovarian cancer is insufficient. 1,2 If proven to reduce ovarian cancer risk, physical activity-a modifiable lifestyle factor-could provide a method to prevent this fourth most common neoplasm in women, which has a poor prognosis.The influence of physical activity on ovarian cancer risk was examined in 10 studies with inconsistent results. [3][4][5][6][7][8][9][10][11][12] Five studies suggested a decreased risk of ovarian cancer with high levels of physical activity, 3-7 3 found no association, [8][9][10] and 2 observed a positive association. 11,12 The discrepancy could be due to the fact that different studies assessed different parameters (including type, frequency, duration, intensity) of physical activity in populations with different profiles.Using data from the Canadian National Enhanced Cancer Surveillance System (NECSS), which collected detailed information on recreational physical activity, occupational physical activity (in 1 province) and other risk factors for cancers, we further evaluated the relation of physical activity to ovarian cancer risk. Material and methods Study populationThe NECSS was a multicomponent, collaborative project of Health Canada and the provincial cancer registries. The case-control component included individual data from 21,020 Canadians with 1 of 19 types of cancers and 5,039 population contro...

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Section: Discussionmentioning

confidence: 99%

Physical activity and the risk of ovarian cancer: A case‐control study in Canada

Pan¹,

Ugnat²,

Mao³

2005

Intl Journal of Cancer

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“…The ingredients of the experimental diets were essentially the same as previously described (9). We made a diet using common foodstuffs.…”

Section: Methodsmentioning

confidence: 99%

“…Feces were separately pooled during non-exercise and exercise periods. Dermal nitrogen loss was measured during the last 3 days of each study period, as previously described (9). Nitrogen contents in the urine, feces, and integuments were determined by a modified micro-Kjeldahl method (9).…”

Section: Methodsmentioning

confidence: 99%

“…We have already shown that the protein allowance of 1.08g/kg per day re commended by the Ministry of Health and Welfare of Japan is sufficient for young adults performing additional daily exercise ranging from 200 to 400 kcal (9) . In this study, we examined whether the recommended amount of daily exercise increases the protein requirement and has adverse effects when dietary protein is reduced to the average protein requirement level of 0.64g/kg per day in young healthy adults.…”

Section: Y Kidomentioning

confidence: 99%

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Recommended Daily Exercise for Japanese Does Not Increase the Protein Requirement in Sedentary Young Men.

Kido

Tsukahara

Rokutan

et al. 1997

Journal of Nutritional Science and Vitaminology, J Nutr Sci Vit

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SummaryIn a previous study, we reported that protein intake at the level of dietary protein allowance for Japanese adults, i.e. 1.08g/kg per day, was enough for recommended daily exercise. However, whether or not recommended daily exercise increases the protein requirement for young adults has not been examined. In this study, we investigated the effect of recommended daily exercise on the protein requirement under an isoenergetic state by a nitrogen balance method. After an adaptation period of 3 days, 12 healthy college students exercised for 10 days with a non-exercise control period of 10 days before or after the exercise period. They were given a maintenance level of energy and 0.64g/kg per day of high-quality mixed proteins, estimated as the average protein requirement for adults by the Ministry of Health and Welfare of Japan, throughout the experimental period. They performed treadmill running during the exercise period at about 65% of V02 max for 25 or 40min/d, which expended 200 or 300 kcal of extra energy, respectively. Although the exercise increased the dermal nitrogen loss, a compensatory decrease in urinary nitrogen excretion was observed. Consequently, the exercises (200 and 300 kcal/d) did not significantly affect the nitrogen balance. These findings indicate that the recommended amount of daily exercise does not change the protein requirement. Key Words recommended daily exercise, protein requirement, dermal nitrogen loss, nitrogen balance Recently, the average energy expenditure of Japanese adults is decreasing. This is mainly due to a decrease in daily physical activity.

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“…Alguns estudos têm reportado o aumento de lesões oxidativas em exercícios extremos (128,129), porém não em exercícios moderados (130). …”

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Efeitos da atividade física em marcadores biológicos da carcinogênese química do cólon de ratos Wistar

Demarzo¹

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Japanese Dietary Protein Allowance is Sufficient for Moderate Physical Exercise in Young Men.

Cited by 8 publications

References 21 publications

Physical activity and the risk of ovarian cancer: A case‐control study in Canada

Physical activity and the risk of ovarian cancer: A case‐control study in Canada

Recommended Daily Exercise for Japanese Does Not Increase the Protein Requirement in Sedentary Young Men.

Efeitos da atividade física em marcadores biológicos da carcinogênese química do cólon de ratos Wistar

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