The invention pertains to the establishment, implementation and management of a personalized information system pertinent to a user's general health, wellness and/or sport performance. A novel set of portable devices with calorimetric, metabolic sensing, computing and communication capabilities are used for non-stop real-time measurement and display as well as long-term logging of highly accurate information about a user's metabolic state. Continuous real-time feedback on the user's respiratory quotient (RQ) and other data may be provided. A novel dual-battery system is also provided by which an uninterrupted power supply can be provided for electronic components. The personalized information system is further designed to consider measured and calculated metabolic parameters in relation to manually specified, user-specific goal(s), and to provide feedback about the user's progress with regards to these goals over the short- and long term. The system may be used to continuously determine the real-time nutritional state, energy uptake and energy expenditure level of the user, and may provide subsequent personalized nutritional- and exercise guidance to advance the user's efficiency at achieving and maintaining his/her specific health, wellness and/or sport performance goal(s). The invention also integrates user information, such as, but not limited to real-time energy uptake and real-time energy balance with social networking/gaming and other social interactions.本発明は、ユーザの一般的な保健、健康、および／またはスポーツの実績に関する個人化情報システムの確立、実装、および管理に関する。少なくとも１つの光源と、少なくとも１つの光検出器と、検出される信号からＶＣＯ２の少なくとも１つの値またはＶＯ２の少なくとも１つの値を生成または記憶する少なくとも１つの構成要素とを含む、対象の経皮測定が可能なシステムが開示される。さらに、対象がデバイスの本体を通して空気を吸い込むか、または吐き出すことができる少なくとも１本の空気流導管と、少なくとも１つのサンプリング入口と、酸素センサと、少なくとも１つの流量センサとを含む、対象の呼吸気の組成を分析する携帯用デバイスが開示される。また、不断の電力供給を電子構成要素のために提供することができるデュアルバッテリシステムも提供される。
